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Re: (ITS#6383) Very Slow Query Response
--On Monday, November 16, 2009 07:37:49 PM -0800 Quanah Gibson-Mount <email@example.com> wrote:
> --On November 16, 2009 8:27:21 PM +0000 firstname.lastname@example.org wrote:
>> Full_Name: Bill MacAllister
>> Version: 2.4.19+
>> OS: Debian 5
>> URL: ftp://ftp.openldap.org/incoming/
>> Submission from: (NULL) (18.104.22.168)
>> On a system where slapd is the top CPU process and is consuming 4% of the
>> CPU simple queries are taking ten of seconds to complete. Here is an
>> example query:
> Last time we saw this it appeared that it might be related to DNS.
> How long does a netstat -a take on the affected systems when the
> LDAP queries are slow?
I don't have that number. I have only see it once in the test
environment I am not sure how long it will take me to get it. Since
this plastered the production service today, I will have to reproduce
it though before we attempt another production upgrade.
Not clear to me why a DNS issue would appear only under load and not
at other times. And it seems strange that it appears in
lenny/openldap-2.4 and not in etch/openldap-2.3.
Bill MacAllister, System Software Programmer
Unix Systems Group, Stanford University