| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Sampling Profler for Postgres |
| Date: | 2009-03-10 01:57:27 |
| Message-ID: | 19676.1236650247@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> writes:
> For resource-based profilers, we have DTrace probes[1] and continue to
> extend them[2], but unfortunately DTrace only works on Solaris and limited
> platforms.
FWIW, the systemtap guys are really, really close to having a working
DTrace equivalent for Linux:
http://gnu.wildebeest.org/diary/2009/02/24/systemtap-09-markers-everywhere/
It's not *quite* there for our purposes
https://bugzilla.redhat.com/show_bug.cgi?id=488941
but I'll be surprised if I'm not dtracing on my Fedora 10 machine before
the week is out.
I'm not at all convinced that we should be putting effort into a
homegrown, partial substitute for DTrace.
regards, tom lane
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