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Re: filter preprocessing for performance improvement
Francis Swasey wrote:
On 3/2/07 12:51 PM, Eric Irrgang wrote:
I have a problem in that the first time someone performs a search for
'objectclass=*' after slapd is restarted, the server is really bogged
down for a while. Once the search has completed once, this is not a
problem. I assume that's due to the IDL cache. However, I currently
have to keep the server unavailable after restarting slapd for upwards
of half an hour while I do an 'objectclass=*' search the first time.
Does your server have an index for objectclass?
I was just today thinking about something along the lines of filter
preprocessing (at the client level actually) that prevented say a
contains search like (telephonenumber=*67530*) on an attribute that the
directory has not indexed for substring searches (case of
telephonenumber). Something at the server level would be better of course.