From: php at koterov dot ru
Operating system: Linux
PHP version: 5.2.3
PHP Bug Type: Unknown/Other Function
Bug description: Unexpected Memcache::get(): marked server ... as failed
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
);
--
Edit bug report at http://bugs.php.net/?id=41607&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=41607&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=41607&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=41607&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=41607&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=41607&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=41607&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=41607&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=41607&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=41607&r=support
Expected behavior: http://bugs.php.net/fix.php?id=41607&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=41607&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=41607&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=41607&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=41607&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=41607&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=41607&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=41607&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=41607&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=41607&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=41607&r=mysqlcfg
