#41607 [Opn->Bgs]: Unexpected Memcache::get(): marked server ... as failed

From: Date: Wed, 06 Jun 2007 08:24:35 +0000
Subject: #41607 [Opn->Bgs]: Unexpected Memcache::get(): marked server ... as failed
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-113449@lists.php.net to get a copy of this message 
 ID:               41607
 Updated by:       tony2001@php.net
 Reported By:      php at koterov dot ru
-Status:           Open
+Status:           Bogus
 Bug Type:         Unknown/Other Function
 Operating System: Linux
 PHP Version:      5.2.3
 New Comment:

Please report issues in PECL extensions to PECL bug tracker.
http://pecl.php.net/package/memcache


Previous Comments:
------------------------------------------------------------------------

[2007-06-06 07:39:25] php at koterov dot ru

Description:
------------
On heavy loaded server (20-40 requests/s) I periodically (0nce a
second) get an error message from memcached extension:

# tail -f php-error_log |grep failed
PHP Notice:  Memcache::get(): marked server '127.0.0.1:11211' as
failed
...

But the server is up, the maximum number of connections (-m 1024) is
not reached. And this error does not depend on how long the memcached
server is running: a couple of minutes after memcached restart I can
watch the same error, the statistics is:

stats
STAT pid 19854
STAT uptime 337
STAT time 1181115051
STAT version 1.2.2
STAT pointer_size 64
STAT rusage_user 1.727737
STAT rusage_system 6.867955
STAT curr_items 63413
STAT total_items 64222
STAT bytes 114838739
STAT curr_connections 16
STAT total_connections 3888
STAT connection_structures 27
STAT cmd_get 259618
STAT cmd_set 64563
STAT get_hits 196161
STAT get_misses 63457
STAT evictions 0
STAT bytes_read 148496793
STAT bytes_written 394115419
STAT limit_maxbytes 1073741824
STAT threads 1

I tried to disable setCompressThreshold, increase memcache.chunk_size,
disable persistent connections, enlarge timeout parameters, but an error
still happens. Furthermore, this error happens on Windows more
frequently, even without heavy load, but I cannot reproduce.

I have the only memcached server added:

$this->connection = new Memcache();
$this->connection->addServer(
    "localhost", 
    11211,
    true,
    1,
    10, 
    2
);



------------------------------------------------------------------------


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