[389-users] Finger slow and optimizing performance

[Andrey Ivanov]

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)

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
)



2009/6/26 Tim Hartmann <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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> 389-users at redhat.com
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>
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