Re: COPY v. java performance comparison

From: Rob Sargent <robjsargent(at)gmail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: COPY v. java performance comparison
Date: 2014-04-03 17:15:25
Message-ID: 533D972D.3060603@gmail.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general

Is the java app cpu bound?
>
> Also watch "vmstat 3" for a minute or two. The last two numbers (wa
> & id) (some vmstat's have a steal, ignore that) will tell you if you
> are io bound.
>
> -Andy
>
>
During COPY, with autovaccume off (server restarted, manual vacuum to
get things going). Immediately hit the "too frequently" gripe.
checkpoint_segments still at 12.

Not cpu bound, so waiting for IO, but surely one expects that?

vmstat 3
procs -----------memory---------- ---swap-- -----io---- --system--
-----cpu-----
r b swpd free buff cache si so bi bo in cs us sy
id wa st
0 2 100148 3317248 763264 33731032 0 0 0 33355 10555 20122
1 1 84 14 0
1 0 100148 3311040 763272 33736972 0 0 0 18128 11118 20601
5 1 87 6 0
1 0 100148 3277808 763272 33769008 0 0 0 12536 11373 20551
7 2 90 1 0
1 1 100148 3267020 763272 33778732 0 0 0 43125 10968 20848
5 2 90 3 0
0 1 100148 3250528 763272 33792804 0 0 0 63567 10467 20121
2 1 81 16 0
0 1 100148 3258584 763276 33784308 0 0 0 17121 10553 20146
1 1 86 12 0
1 2 100148 3237616 763276 33802024 0 0 0 36327 11198 20151
4 2 85 9 0
1 0 100148 3223224 763276 33816556 0 0 0 32189 10763 19900
2 1 84 13 0
0 0 100148 3206740 763276 33831580 0 0 0 13233 11080 20469
7 3 89 1 0
0 2 100148 3204872 763276 33829580 0 0 0 75205 10500 20912
2 1 84 13 0
0 2 100148 3188256 763276 33847544 0 0 0 35448 11028 20788
3 2 86 9 0
0 2 100148 3190248 763276 33844888 0 0 0 21808 11938 20848
2 1 82 15 0
0 1 100148 3184656 763280 33848968 0 0 0 18592 11562 20574
1 1 84 14 0

In response to

Responses

Browse pgsql-general by date

  From Date Subject
Next Message David Johnston 2014-04-03 17:28:35 Re: window function help
Previous Message Andy Colson 2014-04-03 16:57:34 Re: window function help