Re: session_start(), memcache taking too much resources
| From: | Stuart Dallas | Date: | Mon, 07 Nov 2011 14:06:43 +0000 |
| Subject: | Re: session_start(), memcache taking too much resources | ||
| References: | 1 2 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-315608@lists.php.net to get a copy of this message | ||
On 3 Nov 2011, at 20:22, Ing. Branislav Geržo wrote:
> I am running high loaded website and I did some profiling, because
> webservers got high load. PHP Version 5.3.8, running FreeBSD 8.2-STABLE,
> on lighttpd 1.4.29, running php-fpm on 3 servers
>
> xdebug is showing, that calling line "session_start()" is taking too
> much time, which I am really surprised. So I think, something is wrong
> with session handler. Please check screenshot:
>
> http://oi42.tinypic.com/24czlu8.jpg
>
> session.save_handler memcache
> session.save_path
> tcp://web1:11211?persistent=1&weight=1timeout=2&retry_interval=5,
> tcp://web2:11211?persistent=1&weight=1&timeout=2&retry_interval=5
>
> I am using pecl memcache 3.0.6
Sounds to me like an issue connecting to memcached, possibly DNS-related. How is the lookup of
web1/web2 being performed? Have you tried the lookup on the server?
Alternatively try connecting to the memcached servers using netcat or telnet - does that exhibit the
same delay?
-Stuart
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/