| From: | Dimitri Fontaine <dfontaine(at)hi-media(dot)com> |
|---|---|
| To: | "Pavan Deolasee" <pavan(dot)deolasee(at)gmail(dot)com> |
| Cc: | "Heikki Linnakangas" <heikki(dot)linnakangas(at)enterprisedb(dot)com>, "Zdenek Kotala" <Zdenek(dot)Kotala(at)sun(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: visibility maps |
| Date: | 2008-12-12 12:32:40 |
| Message-ID: | 182C0F6E-5C68-4850-B645-8BDBA79201DD@hi-media.com |
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| Lists: | pgsql-hackers |
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Hi,
Le 12 déc. 08 à 13:11, Pavan Deolasee a écrit :
> I did some tests today with pgbench on a decent SMP machine. The goal
> was to see if multiple clients (20 in the test) tries to update tuples
> in different data blocks, if the EX lock on the VM page causes any
> contention.
If you want to test for a really high number of clients, you could
have a try at tsung, which is designed for doing just this.
http://archives.postgresql.org/pgsql-admin/2008-12/msg00032.php
http://tsung.erlang-projects.org/
HTH, regards,
- --
dim
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