9 messages in ru.sysoev.nginxRe: question about io problem
FromSent OnAttachments
M.Kursad DARAMay 26, 2008 11:19 pm 
Igor SysoevMay 27, 2008 1:31 am 
M.Kursad DARAMay 27, 2008 2:17 am 
Dave CheneyMay 27, 2008 2:49 am 
M.Kursad DARAMay 27, 2008 3:52 am 
Dave CheneyMay 27, 2008 4:06 am 
M.Kursad DARAMay 27, 2008 4:31 am 
Dave CheneyMay 27, 2008 4:54 am 
M.Kursad DARAMay 27, 2008 5:19 am 
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Subject:Re: question about io problemActions...
From:Dave Cheney (dave@public.gmane.org)
Date:May 27, 2008 4:06:57 am
List:ru.sysoev.nginx

Can you post a few samples of iostat 5

How many disks are in your array ?

On 27/05/2008, at 8:52 PM, M.Kursad DARA wrote:

Concurrent established ~2000 users.

It's SCSI

2 GB memory. 50 Mb is free now. It's not running on VPS

-----Original Message----- From: owner-nginx-nofU2znGi42HXe+LvDL@public.gmane.org
[mailto:owner-nginx-nofU2znGi42HXe+LvDL@public.gmane.org] On Behalf Of Dave Cheney Sent: Tuesday, May 27, 2008 12:49 PM To: nginx-nofU2znGi42HXe+LvDL@public.gmane.org Subject: Re: question about io problem

How many spindles do you have ? What kind of drives? SATA, PATA, SCSI, FC, etc?

How much memory do you have, how much is free at the moment ?

Are you running inside a VPS ?

On 27/05/2008, at 7:17 PM, M.Kursad DARA wrote:

Centos 5.

I'm using iostat -x 1 Always see %90

-----Original Message----- From: owner-nginx-nofU2znGi42HXe+LvDL@public.gmane.org
[mailto:owner-nginx-nofU2znGi42HXe+LvDL@public.gmane.org] On Behalf Of Igor Sysoev Sent: Tuesday, May 27, 2008 11:32 AM To: nginx-nofU2znGi42HXe+LvDL@public.gmane.org Subject: Re: question about io problem

On Tue, May 27, 2008 at 09:20:12AM +0300, M.Kursad DARA wrote:

How can i optimize io on nginx ?

it's serving image and flv files. IO is very high ( %90 )

is there any option to handle it ?

What OS do you use ? Where do you see 90% IO ?