Re: 答复: server performance issue

[Splitice]

Those message only occur with pm dynamic

Sent from my iPod

On 27/10/2010, at 1:13 AM, "Xin Liu" <liuxin84 at gmail.com> wrote:

> Even I set the pm.max_children=50, I still got lots of errors…...
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> Oct 26 22:09:36.354159 [WARNING] [pool www] seems busy (you may need to increase start_servers, or min/max_spare_servers), spawning 8 children, there are 0 idle, and 12 total children
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> Oct 26 22:09:37.354215 [WARNING] [pool www] seems busy (you may need to increase start_servers, or min/max_spare_servers), spawning 16 children, there are 0 idle, and 17 total children
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> Oct 26 22:11:20.650232 [WARNING] [pool www] seems busy (you may need to increase start_servers, or min/max_spare_servers), spawning 8 children, there are 1 idle, and 17 total children
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> Oct 26 22:11:41.246244 [WARNING] [pool www] seems busy (you may need to increase start_servers, or min/max_spare_servers), spawning 16 children, there are 0 idle, and 21 total children
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> 发件人: Phil Bayfield [mailto:phil at techlightenment.com] 
> 发送时间: 2010年10月26日 19:07
> 收件人: nginx at nginx.org
> 主题: Re: server performance issue
> 
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> Your formulas look interesting, will give them a try next time I'm doing some optimising.
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> Normally I would just make a rough guess based off req/sec, execution times etc and fine tune with ab.
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> On 26 October 2010 11:58, SplitIce <mat999 at gmail.com> wrote:
> 
> ive found that if you have no blocking functions in php, aka its CPU bound then number of  CPU cores+1 is the most efficient. If it has mysql (most likely does) and other IO bound operations then *2 or *3 is fine. values between 20-30 are common in decent scale web servers, in fact on my i7 8gb ram I run 20, on my amd x2 4gb ram I run 15.
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> On Tue, Oct 26, 2010 at 9:52 PM, Phil Bayfield <phil at techlightenment.com> wrote:
> 
> Sorry didn't read you config before posting, you already have this. :)
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> You probably need to reduce the number of child processes, more is not better.
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> On intensive PHP applications I've found lower is better.
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> For example, if you have 100 concurrent connections, this doesn't mean you necessarily need 100 PHP-FPM children.
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