| From: | Szymon Guz <mabewlun(at)gmail(dot)com> |
|---|---|
| To: | Greg Smith <greg(at)2ndquadrant(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: strange |
| Date: | 2010-03-22 17:06:40 |
| Message-ID: | e4edc9361003221006n684322dagcca8173176af18ab@mail.gmail.com |
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| Lists: | pgsql-general |
2010/3/22 Greg Smith <greg(at)2ndquadrant(dot)com>
> Tom Lane wrote:
>
> Szymon Guz <mabewlun(at)gmail(dot)com> <mabewlun(at)gmail(dot)com> writes:
>
>
> I've got a simple query. When I use explain analyze it lasts 7 times slower.
> Why?
>
>
> You've got a machine where gettimeofday() is really slow. This is
> common on cheap PC hardware :-(
>
>
>
> I'd be curious to know more about the hardware and operating system Szymon
> is using if you suspect this is the case. I keep hearing about systems
> where this is slow, but despite claims that they're common I've never
> actually seen one.
>
>
>
Hi,
the laptop that I use right now is Compaq 6710b, 4GB RAM, Ubuntu 64bit,
kernel from distribution, hdd is new
szymon(at)ymon:~$ cat /proc/version
Linux version 2.6.31-20-generic (buildd(at)crested) (gcc version 4.4.1 (Ubuntu
4.4.1-4ubuntu8) ) #58-Ubuntu SMP Fri Mar 12 04:38:19 UTC 2010
regards
Szymon
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