Hello,

Following is the output of vmstat 1 on 1000+ concurrent connections
:-

procs -----------memory---------- ---swap-- -----io---- --system--
-----cpu-----
r b swpd free buff cache si so bi bo in cs us sy id
wa st
0 0 0 438364 43668 31548164 0 0 62 23 3 0 5 0
95 0 0
0 0 0 437052 43668 31548520 0 0 1292 0 19763 1570 0 0
99 1 0
0 1 0 435316 43668 31549940 0 0 1644 0 20034 1537 0 0
99 1 0
1 0 0 434688 43676 31551388 0 0 1104 12 19816 1612 0 0
100 0 0
0 0 0 434068 43676 31552304 0 0 512 24 20253 1541 0 0
99 0 0
1 0 0 430844 43676 31553156 0 0 1304 0 19322 1636 0 0
99 1 0
0 1 0 429480 43676 31554256 0 0 884 0 19993 1585 0 0
99 0 0
0 0 0 428988 43676 31555020 0 0 1008 0 19244 1558 0 0
99 0 0
0 0 0 416472 43676 31556368 0 0 1244 0 18752 1611 0 0
99 0 0
2 0 0 425344 43676 31557552 0 0 1120 0 19039 1639 0 0
99 0 0
0 0 0 421308 43676 31558212 0 0 1012 0 19921 1595 0 0
99 0 0


This might be a stupid question ,which section should i focus from above
output to analyze if I/O is performing well or in heavy load?

Thanks


On Wed, Jan 23, 2013 at 4:58 PM, skechboy <nginx-forum@nginx.us> wrote:

> Have you checked HDD performance on the server in this periods with atop or
> iostat 1 ?
> It's very likely to be related with this since I guess there's a lot's of
> random reading on 2000 connections.
>
> Posted at Nginx Forum:
> http://forum.nginx.org/read.php?2,235447,235456#msg-235456
>
> _______________________________________________
> nginx mailing list
> nginx@nginx.org
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