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                             5.3.3. Installation
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                             5.3.3. Installation
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                5.4. Configuration overview
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                5.4. Configuration overview
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                             5.4.1. Main configuration file
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                             5.4.1. The main configuration file, recoll.conf
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                             5.4.2. The fields file
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                             5.4.2. The fields file
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                             5.4.3. The mimemap file
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                             5.4.3. The mimemap file
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   read. This is sometimes not desirable, and there are ways to either
414
   read. This is sometimes not desirable, and there are ways to either
415
   exclude some types, or on the contrary to define a positive list of types
415
   exclude some types, or on the contrary to define a positive list of types
416
   to be indexed. In the latter case, any type not in the list will be
416
   to be indexed. In the latter case, any type not in the list will be
417
   ignored.
417
   ignored.
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418
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   Excluding types can be done by adding name patterns to the skippedNames
419
   Excluding types can be done by adding wildcard name patterns to the
420
   list, which can be done from the GUI Index configuration menu. It is also
420
   skippedNames list, which can be done from the GUI Index configuration
421
   possible to exclude a mime type independantly of the file name by
421
   menu. It is also possible to exclude a mime type independantly of the file
422
   associating it with the rclnull filter. This can be done by editing the
422
   name by associating it with the rclnull filter. This can be done by
423
   mimeconf configuration file.
423
   editing the mimeconf configuration file.
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425
   In order to define a positive list, You need to edit the main
425
   In order to define a positive list, You need to edit the main
426
   configuration file (recoll.conf) and set the indexedmimetypes
426
   configuration file (recoll.conf) and set the indexedmimetypes
427
   configuration variable. Example:
427
   configuration variable. Example:
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   As a cost for added capability, a raw index will be slightly bigger than a
625
   As a cost for added capability, a raw index will be slightly bigger than a
626
   stripped one (around 10%). Also, searches will be more complex, so
626
   stripped one (around 10%). Also, searches will be more complex, so
627
   probably slightly slower, and the feature is still young, so that a
627
   probably slightly slower, and the feature is still young, so that a
628
   certain amount of weirdness cannot be excluded.
628
   certain amount of weirdness cannot be excluded.
629
629
630
   One of the most adverse consequence of using a raw index is that some
631
   phrase and proximity searches may become impossible: because each term
632
   needs to be expanded, and all combinations searched for, the
633
   multiplicative expansion may become unmanageable.
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  2.3.3. The index configuration GUI
635
  2.3.3. The index configuration GUI
631
636
632
   Most parameters for a given index configuration can be set from a recoll
637
   Most parameters for a given index configuration can be set from a recoll
633
   GUI running on this configuration (either as default, or by setting
638
   GUI running on this configuration (either as default, or by setting
634
   RECOLL_CONFDIR or the -c option.)
639
   RECOLL_CONFDIR or the -c option.)
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   indexing can generate a significant load on the system when files such as
862
   indexing can generate a significant load on the system when files such as
858
   email folders change. Also, monitoring large file trees by itself
863
   email folders change. Also, monitoring large file trees by itself
859
   significantly taxes system resources. You probably do not want to enable
864
   significantly taxes system resources. You probably do not want to enable
860
   it if your system is short on resources. Periodic indexing is adequate in
865
   it if your system is short on resources. Periodic indexing is adequate in
861
   most cases.
866
   most cases.
867
868
  Increasing resources for inotify
869
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   On Linux systems, monitoring a big tree may imply increasing the resources
871
   available to inotify, which are normally defined in /etc/sysctl.conf.
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 ### inotify
874
 #
875
 # cat  /proc/sys/fs/inotify/max_queued_events   - 16384
876
 # cat  /proc/sys/fs/inotify/max_user_instances  - 128
877
 # cat  /proc/sys/fs/inotify/max_user_watches    - 16384
878
 #
879
 # -- Change to:
880
 #
881
 fs.inotify.max_queued_events=32768
882
 fs.notify.max_user_instances=256
883
 fs.inotify.max_user_watches=32768
884
          
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  2.8.1. Slowing down the reindexing rate for fast changing files
886
  2.8.1. Slowing down the reindexing rate for fast changing files
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887
865
   When using the real time monitor, it may happen that some files need to be
888
   When using the real time monitor, it may happen that some files need to be
866
   indexed, but change so often that they impose an excessive load for the
889
   indexed, but change so often that they impose an excessive load for the
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2700
  4.3.2. Python interface
2723
  4.3.2. Python interface
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2702
    4.3.2.1. Introduction
2725
    4.3.2.1. Introduction
2703
2726
2704
   Recoll versions after 1.11 define a Python programming interface, both for
2727
   Recoll versions after 1.11 define a Python programming interface, both for
2705
   searching and indexing.
2728
   searching and indexing. The indexing portion has seen little use, but the
2729
   searching one is used in the Recoll Ubuntu Unity Lens and Recoll Web UI.
2706
2730
2707
   The API is inspired by the Python database API specification, version 1.0
2731
   The API is inspired by the Python database API specification. There were
2732
   two major changes in recent Recoll versions:
2733
2734
     o The basis for the Recoll API changed from Python database API version
2708
   for Recoll versions up to 1.18, version 2.0 for Recoll versions 1.19 and
2735
       1.0 (Recoll versions up to 1.18.1), to version 2.0 (Recoll 1.18.2 and
2709
   later. The package structure changed with Recoll 1.19 too. We will mostly
2736
       later).
2710
   describe the new API and package structure here. A paragraph at the end of
2737
     o The recoll module became a package (with an internal recoll module) as
2711
   this section will explain a few differences and ways to write code
2738
       of Recoll version 1.19, in order to add more functions. For existing
2739
       code, this only changes the way the interface must be imported.
2740
2741
   We will mostly describe the new API and package structure here. A
2742
   paragraph at the end of this section will explain a few differences and
2712
   compatible with both versions.
2743
   ways to write code compatible with both versions.
2713
2744
2714
   The Python interface can be found in the source package, under
2745
   The Python interface can be found in the source package, under
2715
   python/recoll.
2746
   python/recoll.
2716
2747
2717
   The python/recoll/ directory contains the usual setup.py. After
2748
   The python/recoll/ directory contains the usual setup.py. After
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2720
2751
2721
             cd recoll-xxx/python/recoll
2752
             cd recoll-xxx/python/recoll
2722
             python setup.py build
2753
             python setup.py build
2723
             python setup.py install
2754
             python setup.py install
2724
          
2755
          
2756
2757
   The normal Recoll installer installs the Python API along with the main
2758
   code.
2759
2760
   When installing from a repository, and depending on the distribution, the
2761
   Python API can sometimes be found in a separate package.
2725
2762
2726
    4.3.2.2. Recoll package
2763
    4.3.2.2. Recoll package
2727
2764
2728
   The recoll package contains two modules:
2765
   The recoll package contains two modules:
2729
2766
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2764
2801
2765
   Db.query(), Db.cursor()
2802
   Db.query(), Db.cursor()
2766
           These aliases return a blank Query object for this index.
2803
           These aliases return a blank Query object for this index.
2767
2804
2768
   Db.setAbstractParams(maxchars, contextwords)
2805
   Db.setAbstractParams(maxchars, contextwords)
2769
           Set the parameters used to build snippets.
2806
           Set the parameters used to build snippets (sets of keywords in
2807
           context text fragments). maxchars defines the maximum total size
2808
           of the abstract. contextwords defines how many terms are shown
2809
           around the keyword.
2810
2811
   Db.termMatch(match_type, expr, field='', maxlen=-1, casesens=False,
2812
   diacsens=False, lang='english')
2813
           Expand an expression against the index term list. Performs the
2814
           basic function from the GUI term explorer tool. match_type can be
2815
           either of wildcard, regexp or stem. Returns a list of terms
2816
           expanded from the input expression.
2770
2817
2771
        The Query class
2818
        The Query class
2772
2819
2773
   A Query object (equivalent to a cursor in the Python DB API) is created by
2820
   A Query object (equivalent to a cursor in the Python DB API) is created by
2774
   a Db.query() call. It is used to execute index searches.
2821
   a Db.query() call. It is used to execute index searches.
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2839
2793
   Query.fetchone()
2840
   Query.fetchone()
2794
           Fetches the next Doc object from the current search results.
2841
           Fetches the next Doc object from the current search results.
2795
2842
2796
   Query.close()
2843
   Query.close()
2797
           Closes the connection. The object is unusable after the call.
2844
           Closes the query. The object is unusable after the call.
2798
2845
2799
   Query.scroll(value, mode='relative')
2846
   Query.scroll(value, mode='relative')
2800
           Adjusts the position in the current result set. mode can be
2847
           Adjusts the position in the current result set. mode can be
2801
           relative or absolute.
2848
           relative or absolute.
2802
2849
2803
   Query.getgroups()
2850
   Query.getgroups()
2804
           Retrieves the expanded query terms as a list of pairs. Meaningful
2851
           Retrieves the expanded query terms as a list of pairs. Meaningful
2805
           only after executexx In each pair, the first entry is a list of
2852
           only after executexx In each pair, the first entry is a list of
2853
           user terms (of size one for simple terms, or more for group and
2806
           user terms, the second a list of query terms as derived from the
2854
           phrase clauses), the second a list of query terms as derived from
2807
           user terms and used in the Xapian Query. The size of each list is
2855
           the user terms and used in the Xapian Query.
2808
           one for simple terms, or more for group and phrase clauses.
2809
2856
2810
   Query.getxquery()
2857
   Query.getxquery()
2811
           Return the Xapian query description as a Unicode string.
2858
           Return the Xapian query description as a Unicode string.
2812
           Meaningful only after executexx.
2859
           Meaningful only after executexx.
2813
2860
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2835
   Query.rowcount
2882
   Query.rowcount
2836
           Number of records returned by the last execute.
2883
           Number of records returned by the last execute.
2837
2884
2838
   Query.rownumber
2885
   Query.rownumber
2839
           Next index to be fetched from results. Normally increments after
2886
           Next index to be fetched from results. Normally increments after
2840
           each fetchone() call, but can be set/reset before the call effect
2887
           each fetchone() call, but can be set/reset before the call to
2841
           seeking. Starts at 0.
2888
           effect seeking (equivalent to using scroll()). Starts at 0.
2842
2889
2843
        The Doc class
2890
        The Doc class
2844
2891
2845
   A Doc object contains index data for a given document. The data is
2892
   A Doc object contains index data for a given document. The data is
2846
   extracted from the index when searching, or set by the indexer program
2893
   extracted from the index when searching, or set by the indexer program
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   addclause(type='and'|'or'|'excl'|'phrase'|'near'|'sub', qstring=string,
2932
   addclause(type='and'|'or'|'excl'|'phrase'|'near'|'sub', qstring=string,
2886
   slack=0, field='', stemming=1, subSearch=SearchData)
2933
   slack=0, field='', stemming=1, subSearch=SearchData)
2887
2934
2888
    4.3.2.4. The rclextract module
2935
    4.3.2.4. The rclextract module
2889
2936
2890
   Document content is not provided by an index query. To access it, the data
2937
   Index queries do not provide document content (only a partial and
2891
   extraction part of the indexing process must be performed (subdocument
2938
   unprecise reconstruction is performed to show the snippets text). In order
2892
   access and format translation). This is not trivial in general. The
2939
   to access the actual document data, the data extraction part of the
2940
   indexing process must be performed (subdocument access and format
2941
   translation). This is not trivial in general. The rclextract module
2893
   rclextract module currently provides a single class which can be used to
2942
   currently provides a single class which can be used to access the data
2894
   access the data content for result documents.
2943
   content for result documents.
2895
2944
2896
      Classes
2945
      Classes
2897
2946
2898
        The Extractor class
2947
        The Extractor class
2899
2948
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2903
           An Extractor object is built from a Doc object, output from a
2952
           An Extractor object is built from a Doc object, output from a
2904
           query.
2953
           query.
2905
2954
2906
   Extractor.textextract(ipath)
2955
   Extractor.textextract(ipath)
2907
           Extract document defined by ipath and return a Doc object. The
2956
           Extract document defined by ipath and return a Doc object. The
2908
           doc.text field has the document text as either text/plain or
2957
           doc.text field has the document text converted to either
2909
           text/html according to doc.mimetype.
2958
           text/plain or text/html according to doc.mimetype. The typical use
2959
           would be as follows:
2910
2960
2911
   Extractor.idoctofile()
2961
 qdoc = query.fetchone()
2962
 extractor = recoll.Extractor(qdoc)
2963
 doc = extractor.textextract(qdoc.ipath)
2964
 # use doc.text, e.g. for previewing
2965
2966
   Extractor.idoctofile(ipath, targetmtype, outfile='')
2912
           Extracts document into an output file, which can be given
2967
           Extracts document into an output file, which can be given
2913
           explicitly or will be created as a temporary file to be deleted by
2968
           explicitly or will be created as a temporary file to be deleted by
2914
           the caller.
2969
           the caller. Typical use:
2970
2971
 qdoc = query.fetchone()
2972
 extractor = recoll.Extractor(qdoc)
2973
 filename = extractor.idoctofile(qdoc.ipath, qdoc.mimetype)
2915
2974
2916
    4.3.2.5. Example code
2975
    4.3.2.5. Example code
2917
2976
2918
   The following sample would query the index with a user language string.
2977
   The following sample would query the index with a user language string.
2919
   See the python/samples directory inside the Recoll source for other
2978
   See the python/samples directory inside the Recoll source for other
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3222
   one of the system-specific files in the mk directory to mk/sysconf. If
3281
   one of the system-specific files in the mk directory to mk/sysconf. If
3223
   your system is not known yet, it will tell you as much, and you may want
3282
   your system is not known yet, it will tell you as much, and you may want
3224
   to manually copy and modify one of the existing files (the new file name
3283
   to manually copy and modify one of the existing files (the new file name
3225
   should be the output of uname -s).
3284
   should be the output of uname -s).
3226
3285
3286
    5.3.2.1. Building on Solaris
3287
3288
   We did not test building the GUI on Solaris for recent versions. You will
3289
   need at least Qt 4.4. There are some hints on an old web site page, they
3290
   may still be valid.
3291
3292
   Someone did test the 1.19 indexer and Python module build, they do work,
3293
   with a few minor glitches. Be sure to use GNU make and install.
3294
3227
  5.3.3. Installation
3295
  5.3.3. Installation
3228
3296
3229
   Either type make install or execute recollinstall prefix, in the root of
3297
   Either type make install or execute recollinstall prefix, in the root of
3230
   the source tree. This will copy the commands to prefix/bin and the sample
3298
   the source tree. This will copy the commands to prefix/bin and the sample
3231
   configuration files, scripts and other shared data to prefix/share/recoll.
3299
   configuration files, scripts and other shared data to prefix/share/recoll.
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3257
3325
3258
   The most accurate documentation for the configuration parameters is given
3326
   The most accurate documentation for the configuration parameters is given
3259
   by comments inside the default files, and we will just give a general
3327
   by comments inside the default files, and we will just give a general
3260
   overview here.
3328
   overview here.
3261
3329
3262
   For each index, there are two sets of configuration files. System-wide
3330
   By default, for each index, there are two sets of configuration files.
3263
   configuration files are kept in a directory named like
3331
   System-wide configuration files are kept in a directory named like
3264
   /usr/[local/]share/recoll/examples, and define default values, shared by
3332
   /usr/[local/]share/recoll/examples, and define default values, shared by
3265
   all indexes. For each index, a parallel set of files defines the
3333
   all indexes. For each index, a parallel set of files defines the
3266
   customized parameters.
3334
   customized parameters.
3335
3336
   In addition (as of Recoll version 1.19.7), it is possible to specify two
3337
   additional configuration directories which will be stacked before and
3338
   after the user configuration directory. These are defined by the
3339
   RECOLL_CONFTOP and RECOLL_CONFMID environment variables. Values from
3340
   configuration files inside the top directory will override user ones,
3341
   values from configuration files inside the middle directory will override
3342
   system ones and be overriden by user ones. These two variables may be of
3343
   use to applications which augment Recoll functionality, and need to add
3344
   configuration data without disturbing the user's files. Please note that
3345
   the two, currently single, values will probably be interpreted as
3346
   colon-separated lists in the future: do not use colon characters inside
3347
   the directory paths.
3267
3348
3268
   The default location of the configuration is the .recoll directory in your
3349
   The default location of the configuration is the .recoll directory in your
3269
   home. Most people will only use this directory.
3350
   home. Most people will only use this directory.
3270
3351
3271
   This location can be changed, or others can be added with the
3352
   This location can be changed, or others can be added with the
...
...
3326
       handle multiple encodings in a single file. In this relatively
3407
       handle multiple encodings in a single file. In this relatively
3327
       unlikely case, you can edit the configuration file as two separate
3408
       unlikely case, you can edit the configuration file as two separate
3328
       text files with appropriate encodings, and concatenate them to create
3409
       text files with appropriate encodings, and concatenate them to create
3329
       the complete configuration.
3410
       the complete configuration.
3330
3411
3331
  5.4.1. Main configuration file
3412
  5.4.1. The main configuration file, recoll.conf
3332
3413
3333
   recoll.conf is the main configuration file. It defines things like what to
3414
   recoll.conf is the main configuration file. It defines things like what to
3334
   index (top directories and things to ignore), and the default character
3415
   index (top directories and things to ignore), and the default character
3335
   set to use for document types which do not specify it internally.
3416
   set to use for document types which do not specify it internally.
3336
3417
...
...
3352
           list. See the followLinks option about following symbolic links
3433
           list. See the followLinks option about following symbolic links
3353
           found under the top elements (not followed by default).
3434
           found under the top elements (not followed by default).
3354
3435
3355
   skippedNames
3436
   skippedNames
3356
3437
3357
           A space-separated list of patterns for names of files or
3438
           A space-separated list of wilcard patterns for names of files or
3358
           directories that should be completely ignored. The list defined in
3439
           directories that should be completely ignored. The list defined in
3359
           the default file is:
3440
           the default file is:
3360
3441
3361
 skippedNames = #* bin CVS  Cache cache* caughtspam  tmp .thumbnails .svn \
3442
 skippedNames = #* bin CVS  Cache cache* caughtspam  tmp .thumbnails .svn \
3362
                *~ .beagle .git .hg .bzr loop.ps .xsession-errors \
3443
                *~ .beagle .git .hg .bzr loop.ps .xsession-errors \
...
...
3402
           The values in the *skippedPaths variables are matched by default
3483
           The values in the *skippedPaths variables are matched by default
3403
           with fnmatch(3), with the FNM_PATHNAME and FNM_LEADING_DIR flags.
3484
           with fnmatch(3), with the FNM_PATHNAME and FNM_LEADING_DIR flags.
3404
           This means that '/' characters must be matched explicitely. You
3485
           This means that '/' characters must be matched explicitely. You
3405
           can set skippedPathsFnmPathname to 0 to disable the use of
3486
           can set skippedPathsFnmPathname to 0 to disable the use of
3406
           FNM_PATHNAME (meaning that /*/dir3 will match /dir1/dir2/dir3).
3487
           FNM_PATHNAME (meaning that /*/dir3 will match /dir1/dir2/dir3).
3488
3489
   zipSkippedNames
3490
3491
           A space-separated list of patterns for names of files or
3492
           directories that should be ignored inside zip archives. This is
3493
           used directly by the zip filter, and has a function similar to
3494
           skippedNames, but works independantly. Can be redefined for
3495
           filesystem subdirectories. For versions up to 1.19, you will need
3496
           to update the Zip filter and install a supplementary Python
3497
           module. The details are described on the Recoll wiki.
3407
3498
3408
   followLinks
3499
   followLinks
3409
3500
3410
           Specifies if the indexer should follow symbolic links while
3501
           Specifies if the indexer should follow symbolic links while
3411
           walking the file tree. The default is to ignore symbolic links to
3502
           walking the file tree. The default is to ignore symbolic links to
...
...
3594
           character, which there is currently no way to escape. Also note
3685
           character, which there is currently no way to escape. Also note
3595
           the initial semi-colon. Example: localfields= ;rclaptg=gnus;other
3686
           the initial semi-colon. Example: localfields= ;rclaptg=gnus;other
3596
           = val, then select specifier viewer with mimetype|tag=... in
3687
           = val, then select specifier viewer with mimetype|tag=... in
3597
           mimeview.
3688
           mimeview.
3598
3689
3690
   noxattrfields
3691
3692
           Recoll versions 1.19 and later automatically translate file
3693
           extended attributes into document fields (to be processed
3694
           according to the parameters from the fields file). Setting this
3695
           variable to 1 will disable the behaviour.
3696
3599
   metadatacmds
3697
   metadatacmds
3600
3698
3601
           This allows executing external commands for each file and storing
3699
           This allows executing external commands for each file and storing
3602
           the output in a Recoll field. This could be used for example to
3700
           the output in Recoll document fields. This could be used for
3603
           index external tag data. The value is a list of field names and
3701
           example to index external tag data. The value is a list of field
3604
           commands, don't forget an initial semi-colon. Example:
3702
           names and commands, don't forget an initial semi-colon. Example:
3605
3703
3606
 [/some/area/of/the/fs]
3704
 [/some/area/of/the/fs]
3607
 metadatacmds = ; tags = tmsu tags %f; otherfield = somecmd -xx %f
3705
 metadatacmds = ; tags = tmsu tags %f; otherfield = somecmd -xx %f
3608
                
3706
                
3707
3708
           As a specially disgusting hack brought by Recoll 1.19.7, if a
3709
           "field name" begins with rclmulti, the data returned by the
3710
           command is expected to contain multiple field values, in
3711
           configuration file format. This allows setting several fields by
3712
           executing a single command. Example:
3713
3714
 metadatacmds = ; rclmulti1 = somecmd %f
3715
                
3716
3717
           If somecmd returns data in the form of:
3718
3719
 field1 = value1
3720
 field2 = value for field2
3721
                
3722
3723
           field1 and field2 will be set inside the document metadata.
3609
3724
3610
    5.4.1.3. Parameters affecting where and how we store things:
3725
    5.4.1.3. Parameters affecting where and how we store things:
3611
3726
3612
   dbdir
3727
   dbdir
3613
3728
...
...
3661
           usage also depends on average document size. The default value is
3776
           usage also depends on average document size. The default value is
3662
           10, and it is probably a bit low. If your system usually has free
3777
           10, and it is probably a bit low. If your system usually has free
3663
           memory, you can try higher values between 20 and 80. In my
3778
           memory, you can try higher values between 20 and 80. In my
3664
           experience, values beyond 100 are always counterproductive.
3779
           experience, values beyond 100 are always counterproductive.
3665
3780
3666
    5.4.1.4. Indexing parallelism configuration
3781
    5.4.1.4. Parameters affecting multithread processing
3667
3782
3668
   The Recoll indexing process recollindex can use multiple threads to speed
3783
   The Recoll indexing process recollindex can use multiple threads to speed
3669
   up indexing on multiprocessor systems. The work done to index files is
3784
   up indexing on multiprocessor systems. The work done to index files is
3670
   divided in several stages and some of the stages can be executed by
3785
   divided in several stages and some of the stages can be executed by
3671
   multiple threads. The stages are:
3786
   multiple threads. The stages are:
...
...
3689
           integer values). If a value of -1 is used for a given stage, no
3804
           integer values). If a value of -1 is used for a given stage, no
3690
           queue is used, and the thread will go on performing the next
3805
           queue is used, and the thread will go on performing the next
3691
           stage. In practise, deep queues have not been shown to increase
3806
           stage. In practise, deep queues have not been shown to increase
3692
           performance. A value of 0 for the first queue tells Recoll to
3807
           performance. A value of 0 for the first queue tells Recoll to
3693
           perform autoconfiguration (no need for the two other values in
3808
           perform autoconfiguration (no need for the two other values in
3694
           this case)- this is the default configuration.
3809
           this case) - this is the default configuration.
3695
3810
3696
   thrTCounts
3811
   thrTCounts
3697
3812
3698
           This defines the number of threads used for each stage. If a value
3813
           This defines the number of threads used for each stage. If a value
3699
           of -1 is used for one of the queue depths, the corresponding
3814
           of -1 is used for one of the queue depths, the corresponding
...
...
3718
   sequentially), so the previous approach is preferred. YMMV... The 2 last
3833
   sequentially), so the previous approach is preferred. YMMV... The 2 last
3719
   values for thrTCounts are ignored.
3834
   values for thrTCounts are ignored.
3720
3835
3721
 thrQSizes = 2 -1 -1
3836
 thrQSizes = 2 -1 -1
3722
 thrTCounts =  6 1 1
3837
 thrTCounts =  6 1 1
3838
3839
   The following example would disable multithreading. Indexing will be
3840
   performed by a single thread.
3841
3842
 thrQSizes = -1 -1 -1
3723
3843
3724
    5.4.1.5. Miscellaneous parameters:
3844
    5.4.1.5. Miscellaneous parameters:
3725
3845
3726
   autodiacsens
3846
   autodiacsens
3727
3847