| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | Magnus Hagander <magnus(at)hagander(dot)net>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org> |
| Subject: | Re: Testing pg_terminate_backend() |
| Date: | 2008-04-18 17:24:10 |
| Message-ID: | 4020.1208539450@sss.pgh.pa.us |
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| Lists: | pgsql-hackers pgsql-patches |
Bruce Momjian <bruce(at)momjian(dot)us> writes:
> Attached is my test script. I ran it for 14 hours (asserts on),
> running 450 regression tests, with up to seven backends killed per
> regression test.
Hmm, there are something on the order of 10000 SQL commands in our
regression tests, so even assuming perfect randomness you've exercised
SIGTERM on maybe 10% of them --- and of course there's multiple places
in a complex DDL command where SIGTERM might conceivably be a problem.
Who was volunteering to run this 24x7 for awhile?
> SLEEP=`expr $RANDOM \* $REGRESSION_DURATION / 32767`
Uh, where's the randomness coming from?
regards, tom lane
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