Memcached module -- unix domain socket support? (too many TIME_WAITs..)

[Kon Wilms]

Is anyone interested in implementing this feature for a bounty? :-) Igor?

Cheers
Kon

On Fri, Aug 1, 2008 at 12:06 AM, Chancey <chanceycn at gmail.com> wrote:
> Yes, i meant this like you.
> Using memcached can avoid disk I/O. I guess that is why he used memcached on
> localhost.
>
> sorry , my english very pool.
>
>
>
> 2008-08-01
> ________________________________
> Chancey
> ________________________________
> 发件人： Igor Sysoev
> 发送时间： 2008-08-01  14:39:19
> 收件人： nginx at sysoev.ru
> 抄送：
> 主题： Re: Re: Memcached module -- unix domain socket support? (too many
> TIME_WAITs..)
> On Fri, Aug 01, 2008 at 02:27:55PM +0800, Chancey wrote:
>
>> Maybe I/O is too high ?
>> Use memcached can avoid this .
>
> Using local memcached means that all data can fit in memory, therefore
> local filesystem data will be cached by OS VM and there will not be
> high disk I/O.
>
>> ?????? Re: Memcached module -- unix domain socket support? (too many TIME_WAITs..)
>>
>> On Thu, Jul 31, 2008 at 09:54:03PM -0700, Kon Wilms wrote:
>>
>>  > I have a pool of memcached servers running on localhost with
>>  > connection to nginx, feeding motion jpeg data out via static JPEGs to
>>  > a flash application. The load is pretty high on the server because of
>>  > this with each client running 3 GETs from memcached every second (i.e.
>>  > 3fps).
>>  >
>>  > Nginx works fine, however, the problem I have is that thousands of
>>  > TIME_WAITs are created from the memcached GET requests, which I would
>>  > like to eliminate. I've already tuned the kernel but this has not
>>  > reduced it enough to handle a couple thousand viewers on the server.
>>  >
>>  > Is there any way to connect nginx's memcached module to memcached via
>>  > unix domain socket or perhaps UDP, or any other ideas on how to fix
>>  > this problem?
>>
>> Adding unix socket support to ngx_http_memcached_module should be easy,
>> but I'm not sure if memcached suppot unix sockets.
>>
>> BTW why do you serve local images from memcached ?
>> It's better for both CPU and memory to serve them from local filesystem
>> using sendfile.