[389-users] Finger slow and optimizing performance

[Rich Megginson]

Andrey Ivanov wrote:
> Hi,
>
>
> There may be several attributes of interest to you as far as the 
> memory consumption is concerned 
> (http://www.redhat.com/docs/manuals/dir-server/8.1/cli/Configuration_Command_File_Reference-Plug_in_Implemented_Server_Functionality_Reference-Database_Plug_in_Attributes.html) 
> :
> nsslapd-dbcachesize
> nsslapd-cachememsize for every backend (by default, your data is in 
> cn=userRoot,cn=ldbm database,cn=plugins,cn=config)
> nsslapd-import-cachesize (used only during ldif import)
Start with nsslapd-cachememsize - make that as large as possible and 
minimize nsslapd-dbcachesize
>
> You can adjust the corresponding values by monitoring the attributes 
> like currententrycachesize or entrycachehitratio of  
> cn=monitor,cn=userRoot,cn=ldbm database,cn=plugins,cn=config 
> (http://www.redhat.com/docs/manuals/dir-server/8.1/cli/Configuration_Command_File_Reference-Plug_in_Implemented_Server_Functionality_Reference-Database_Plug_in_Attributes.html#Configuration_Command_File_Reference-Database_Plug_in_Attributes-Database_Attributes_under_cnmonitor_cnldbm_database_cnplugins_cnconfig)
>
You can also use the logconv.pl script to examine the access log to see 
what types of searches are being done and which are not indexed properly.
>
>
> 2009/6/26 Tim Hartmann <hartmann at fas.harvard.edu 
> <mailto:hartmann at fas.harvard.edu>>
>
>     Hi!
>
>
>     I was spending some time today trying to make sure that I was
>     getting the most bang for my buck today an my replica's and I
>     notices two items of interest that I was wondering if anyone else
>     had input on!
>
>     Firstly, after creating a number of indexs, my performance seems
>     to be really good, the exception that I noticed was "finger" I
>     noticed that finger takes a couple of seconds to return the data
>     on RHDS whereas on OpenLDAP, it pops right now in real time! My
>     first though was that I was doing an un-indexed search, but I
>     can't for the life of me figure out what I might not be indexing
>     that I should be!
>
>     The second thing I noticed was that on my servers, which are
>     RHEL5, running 32bit OS's with the PAE Kernels, RHDS doesn't ever
>     actually address more then 3 gig of ram! I was looking through the
>     documentations, and it looks like by raising the "Maximum Cache
>     Size" I'll be able to allow RHDS to use more of the available
>     memory.. did I get that right?
>
>
>     Anyway, as always thanks in advance for all the help! This list
>     has been a tremendous resource for an application that keeps on
>     showing it's value in huge ways!
>
>
>     Best,
>
>     Tim
>
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>
>
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