Also, If you're opening/closing connections between every hit you could run out of local ports and get that system error issue (google for TW_WAIT buckets and local port blah blah). Run the test with persistent connections to see if it makes a difference.
-Dormando On Sat, 1 Aug 2009, fredrik wrote: > > I have a question about network and memcached. All servers are in the > same hosting location. Are 13 failed requests of 1 560 000 requests > per minute acceptable fail ratio or should we expect to have 100% > success rate with the tcp protocol? > > Memcached 1.2.6, but we have also tried memcached 1.4.0 with same > result. > Pecl/Memcache 3.0.4 > PHP Version 5.2.9 > > Error: > Callback says it's "connection timed out". But increasing the timeout > does not help and pecl/memcached says "system error". > > Running an stresstest with client and server(localhost) on the same > machine does not reproduce the error. >
