memcache and nginx

[Sean Allen]

On May 14, 2008, at 3:26 PM, Igor Sysoev wrote:

> On Wed, May 14, 2008 at 09:41:20AM -0400, Sean Allen wrote:
>
>>> It seems you have small number of request/s. Could you enable debug
>>> logging
>>> for several minutes until the bug will appear ?
>>
>> have a small number of requests related to this problem, have a large
>> number overall.
>>
>> i'm not familiar with debug logging, how do i enable that?
>> can i enable only on the error log ( as its small but the access logs
>> are about 250 megs
>> a day ).
>
> The log will be in error_log and it will be large. VERY LARGE.
> So it should be set per some addresses only or if the load is low (as
> in your case) for short time.
>
> You need to build nginx using
>
> ./configure --with-debug ...
>
> Then you should enable debug log level in nginx.conf:
>
> error_log  /path/to/log  debug;
>
> Otherwise you may set debug per some addresses only:
>
> events {
>     debug_connection  192.168.1.0/24;
>     debug_connection  192.168.10.32;
>     ...
> }
>
> Disabled debug has very low CPU overhead.

damn. the advertiser running the banners that caused the problem  
finally fixed an outstanding issue on their end
and it fixed the problem on our end. how the two were related is a  
little beyond me but apparently they were
so this is going to end up lurking as i cant create the situation  
anymore.