| From: | Martin Pihlak <martin(dot)pihlak(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Neil Conway <neilc(at)samurai(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: stored procedure stats in collector |
| Date: | 2007-09-24 17:08:04 |
| Message-ID: | 46F7EEF4.7090102@gmail.com |
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| Lists: | pgsql-hackers |
>> It seems that the overhead is unnoticeable if disabled, very visible
>> for lightweight functions and heavy callers. Almost unnoticeable for
>> more compute intensive functions.
>
> The very high system times seem odd. Maybe you have a machine with
> slow gettimeofday()?
>
So it seems (on Ubuntu 7.04). Reran the benchmark on another system and
got more reasonable results:
"none" usr sys total
dummy 15.9 0.68 16.58
rfact 39.37 0.07 39.44
ifact 12.89 0.01 12.9
"all" usr sys total diff x
dummy 20.82 4.44 25.26 1.52
rfact 45.17 4.17 49.34 1.25
ifact 12.92 0.03 12.96 1.00
Regards,
Martin
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