| From: | markw(at)osdl(dot)org |
|---|---|
| To: | manfred(at)colorfullife(dot)com |
| Cc: | pgsql-hackers(at)postgresql(dot)org, osdldbt-general(at)lists(dot)sourceforge(dot)net |
| Subject: | Re: Prelimiary DBT-2 Test results |
| Date: | 2003-09-05 22:45:38 |
| Message-ID: | 200309052245.h85Mjfo17507@mail.osdl.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 4 Sep, Manfred Spraul wrote:
> markw(at)osdl(dot)org wrote:
>
>>http://developer.osdl.org/markw/44/
>>
>>I threw together (kind of sloppily) a web page of the data I was
>>starting to collect for our DBT-2 workload (TPC-C derivative) on
>>PostgreSQL 7.3.4. Keep in mind not much database tuning has been done
>>yet. Feel free to ask any questions.
>>
>>
>>
> The kernel readprofile output is very odd:
> sys_ipc receives lots of hits, but that function is a trivial multiplexer.
> sys_timedsemop, and try_atomic_semop got 0 hits - that's the main
> implementation of sysv semaphores. Could you double check your
> readprofile scripts?
Someone here was kind enough to run a little test comparing profiles
from 2.4.20-19 (a redhat kernel) and 2.6.0-test4-mm5. He found that the
2.6.0-test4-mm5 profile lacked sys_timedsemop and try_atomic_semop.
Mark
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