From: | Jan Wieck <janwieck(at)yahoo(dot)com> |
---|---|
To: | PostgreSQL HACKERS <pgsql-hackers(at)postgreSQL(dot)org> |
Subject: | Profiling under Linux |
Date: | 2001-12-06 15:04:30 |
Message-ID: | 200112061504.fB6F4Vd02648@saturn.jw.home |
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Lists: | pgsql-hackers |
Hi,
I had the same problem with gprof(1) that all the timing
information is zero. Today I found out what's going on.
Under Linux fork(2) resets the ITIMER_PROF. Getting the
itimer before the fork(2) with getitimer(2) and if pid==0
setting it with setitimer(2) to what it was makes profiling
work.
Jan
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