PHP :: Bug #58207 :: send of 32768 bytes failed with errno=11 Resource temporarily unavailable

Bug #58207	send of 32768 bytes failed with errno=11 Resource temporarily unavailable
Submitted:	2008-06-02 05:05 UTC	Modified:	2008-09-11 16:07 UTC
From:	paulgao at yeah dot net	Assigned:
Status:	Closed	Package:	memcache (PECL)
PHP Version:	5.2.5	OS:	Slackware
Private report:	No	CVE-ID:	None

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[2008-06-02 05:05 UTC] paulgao at yeah dot net

Description:
------------
Notice: memcache_set(): send of 32768 bytes failed with errno=11 Resource temporarily unavailable in /root/memcached.php on line 6

Reproduce code:
---------------
<?php

$data = str_repeat('a', 64 * 1024);

$mc = memcache_connect('192.168.0.3', 7380);
var_dump(memcache_set($mc, 'memcache_test', $data, 0, 600));

echo strlen(memcache_get($mc, 'memcache_test'));

?>

Expected result:
----------------
bool(true)
65536

Actual result:
--------------
Notice: memcache_set(): send of 32768 bytes failed with errno=11 Resource temporarily unavailable in /root/memcached.php on line 6

Call Stack:
    0.0016      56084   1. {main}() /root/memcached.php:0
    0.0024     136952   2. memcache_set(class Memcache, string(13), string(65536), long, long) /root/memcached.php:6

bool(true)
65536

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[2008-06-02 06:15 UTC] paulgao at yeah dot net

set flag to MEMCACHE_COMPRESSED, no problem.

[2008-06-12 14:27 UTC] ian at digg dot com

I'm also seeing this, with 3.0.1. I downgraded to 2.2.3, and they went away.

I was getting notices for values as small as 2k:
Notice: MemcachePool::set() [function.MemcachePool-set]: send of 2639 bytes failed with errno=11 Resource temporarily unavailable

With v2.2.3, I'm able to set around 1mb of data with no problem.

This bug is a showstopper for me.

I found this discussion about the problem, which may be helpful.
http://www.nabble.com/About-memcached-errno%3D11-td16932492.html

[2008-06-12 22:44 UTC] paulgao at yeah dot net

i use sysctl.conf, the problem is gone...

net.core.rmem_max = 262144
net.core.wmem_max = 262144
net.core.wmem_default = 262144
net.core.rmem_default = 262144
net.core.optmem_max = 40960
net.core.netdev_max_backlog = 1024
net.ipv4.tcp_wmem = 65536 131072 262144
net.ipv4.tcp_rmem = 16384 174760 349520
net.ipv4.tcp_mem = 196608 262144 393216

[2008-06-24 13:31 UTC] mikael at synd dot info

This bug has been fixed in CVS.

In case this was a documentation problem, the fix will show up at the
end of next Sunday (CET) on pecl.php.net.

In case this was a pecl.php.net website problem, the change will show
up on the website in short time.
 
Thank you for the report, and for helping us make PECL better.

[2008-09-02 19:11 UTC] joe at digg dot com

Is there a reason there hasn't been a new release on this 
recently? Lots of goodies and it's unstable for use as 
released.

[2008-09-11 16:07 UTC] mikael at synd dot info

Version 3.0.2 has been released now

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