| From: | Robert Lor <Robert(dot)Lor(at)Sun(dot)COM> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: LWLock statistics collector |
| Date: | 2006-08-04 16:41:52 |
| Message-ID: | 44D378D0.3020709@sun.com |
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| Lists: | pgsql-hackers pgsql-patches |
Tom Lane wrote:
>I think the actual wave of the future for analyzing behavior at the
>LWLock level is going to be DTrace. It seems way more flexible than
>an aggregate-statistics view can be.
>
>
CVS head now has the following LWLock probes, and more can easily be
added. These probes can be enabled using the sample DTrace scripts at
http://pgfoundry.org/projects/dtrace/
lwlock-acquire
lwlock-release
lwlock-startwait
lwlock-endwait
lwlock-condacquire
lwlock-condacquire-fail
If anyone wants to have access to a Solaris machine to play with DTrace,
let me know.
Regards,
-Robert
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