Memcache connection errors

[Kamran Nisar]

hey alll...
we are having a weird problem with memcache.. descriptions below.

the problem:
we shifted our hosting company, and ever since we got at the new one.. we
have been getting random connection error to memcache...
we've run various packets transfers during the memcache test to see if a
similar error is encountered there.. but the the problem seems to occur with
memcache only..


the memcached lies on anoher machine, and the hits are generated using ab,
when using anything above total of 1000 and concurrent of 150 connections..
we start getting random errors.. the errors are mentioned below

------
PHP Warning:  Memcache::pconnect() [<a href='function.pconnect'>
function.pconnect</a>]: Can't connect to 10.0.0.51:11211, Unknown error (0)
PHP Warning:  Memcache::pconnect() [<a href='function.pconnect'>
function.pconnect</a>]: Can't connect to 10.0.0.51:11211, Connection timed
out (110)

increased the port range to accomadate over 64K connections, recompiled the
kernel to accomodate TIME_WAIT to 2 secs, tried setting up memcached on the
same machine, remote machine.. but the errorr keeps randonmly showing up...

we are currently using 100Mbps ethernet cards , while previously we had
gigabit ethernet on managed switches.. and we have also swtiched from intel
to 64 bit AMD



any suggestions/ides for debugging or reasons as to why the random connect
error comes up...
-- 
Regards
M Kamran Nisar,
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