Re: Poor performance on Solaris

[Brett Maxfield <brett.maxfield@gmail.com>]

Why delete DB_CONFIG, surely that would make performance worse, apart from the fact you now compare apples and oranges.. ?

On 01/03/2011, at 12:41 PM, Jorgen Lundman <lundman@lundman.net> wrote:

> 
> 
> Howard Chu wrote:
>> Actually, you should always use a shared memory key on Solaris. Using
>> mmap'd files is just too slow on that OS.
>> 
> 
> SunOS dns05.unix 5.10 Generic_141445-09 i86pc i386 i86pc
> 
> Is this still the case? I did a quick (naive?) test to see if it would improve things for our LDAP server. I had an old/replace DNS server to test on, using production values.
> 
> # wc -l p
>  142149 p
> # time /usr/local/bin/ldapsearch -h 0 -x -D 'cn=admin,dc=company,dc=com' -w secret -f p -b ou=dns,dc=company,dc=com "(%s)" dn  > /dev/null
> 
> pass 1
> real    0m20.660s
> user    0m3.134s
> sys     0m1.283s
> 
> pass 2
> real    0m20.853s
> user    0m3.132s
> sys     0m1.309s
> 
> 
> I added only:
> 
> + shm_key 1000
> + dbconfig set_shm_key 1000
> 
> to slapd.conf, deleted DB_CONFIG, stopped slapd, ran db_recover, started slapd:
> 
> # ipcs
> IPC status from <running system> as of Tuesday, March  1, 2011 11:32:05 AM JST
> T         ID      KEY        MODE        OWNER    GROUP
> Message Queues:
> Shared Memory:
> m         23   0x3ed      --rw-------     root     root
> m         22   0x3ec      --rw-------     root     root
> m         21   0x3eb      --rw-------     root     root
> m         20   0x3ea      --rw-------     root     root
> m         19   0x3e9      --rw-------     root     root
> m         18   0x3e8      --rw-------     root     root
> 
> 
> pass 1
> real    0m19.772s
> user    0m3.109s
> sys     0m1.275s
> 
> pass 2
> real    0m19.858s
> user    0m3.102s
> sys     0m1.275s
> 
> 
> I was hoping for a larger difference, but maybe my tests are a little too simple.
> 
> 
> -- 
> Jorgen Lundman       | <lundman@lundman.net>
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