RE: Retransmissions seen for HTTP GETs and POSTS

["Nayman Felix-QA5535" <Felix.Nayman@xxxxxxxxxxxx>]

I've posted this before, but since I haven't seen any response and haven't had any success in debugging this, I'm wondering if anyone can provide any insight.  My previous message is below:

 

In some testing that I've done, anywhere from 1 to 10%  of HTTP GETs and POSTs that apache receives are resulting in a TCP retransmission.  I've captured a wireshark trace for these retransmissions and noticed that the HTTP GET  or POST is being received, but no TCP ack is being sent out resulting in a retransmission.  When the retransmission is received, the ack for the initial GET or POST is finally sent back.  Has anyone ever seen such a problem?  I don't see this issue with other TCP traffic so it appears to be related to apache.   These tests were run with Apache 2.2.4 and  on Linux 2.6.21.  If a wireshark trace would be helpful I can provide one.  Thanks for any input.