Re: TCP Spike

2007-09-27 Thread Ilpo Järvinen
On Thu, 27 Sep 2007, Majumder, Rajib wrote: > We have observed 40ms latency spikes in TCP connections in "burst" type of > traffic. > This affects regular TCP sockets. Are segments being sent full-sized, or is there perhaps some Nagle component in it as well? I.e., are the applications using

Re: TCP Spike

2007-09-27 Thread Stephen Hemminger
On Thu, 27 Sep 2007 11:58:01 +0800 "Majumder, Rajib" <[EMAIL PROTECTED]> wrote: > Hi, > > We have observed 40ms latency spikes in TCP connections in "burst" type of > traffic. This affects regular TCP sockets. We observed this issue in kernels > of 2.4.21 and kernel 2.6.5. Unfortunately,

Re: TCP Spike

2007-09-27 Thread Stephen Hemminger
On Thu, 27 Sep 2007 11:58:01 +0800 Majumder, Rajib [EMAIL PROTECTED] wrote: Hi, We have observed 40ms latency spikes in TCP connections in burst type of traffic. This affects regular TCP sockets. We observed this issue in kernels of 2.4.21 and kernel 2.6.5. Unfortunately, 2.6.5 is out of

Re: TCP Spike

2007-09-27 Thread Ilpo Järvinen
On Thu, 27 Sep 2007, Majumder, Rajib wrote: We have observed 40ms latency spikes in TCP connections in burst type of traffic. This affects regular TCP sockets. Are segments being sent full-sized, or is there perhaps some Nagle component in it as well? I.e., are the applications using

TCP Spike

2007-09-26 Thread Majumder, Rajib
Hi, We have observed 40ms latency spikes in TCP connections in "burst" type of traffic. This affects regular TCP sockets. We observed this issue in kernels of 2.4.21 and kernel 2.6.5. Aparently, this seems to be fixed in 2.6.19. Can someone throw some light on this? Is this a congestion

TCP Spike

2007-09-26 Thread Majumder, Rajib
Hi, We have observed 40ms latency spikes in TCP connections in burst type of traffic. This affects regular TCP sockets. We observed this issue in kernels of 2.4.21 and kernel 2.6.5. Aparently, this seems to be fixed in 2.6.19. Can someone throw some light on this? Is this a congestion