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Date: Sun, 29 Apr 2007 15:27:49 +0800 From: "Quan Sun" <cfk.quan@...il.com> To: "Robert Iakobashvili" <coroberti@...il.com> Cc: netdev@...r.kernel.org Subject: Re: Slow tcp handshakes rate of 2.6.20 and 2.6.19 Hi, On 4/28/07, Robert Iakobashvili <coroberti@...il.com> wrote: > What are the > #cat /proc/sys/net/ipv4/tcp_mem values for your kernels? > > Do you see tcp memory pressure by > #netstat -s ? > In my original kernel (2.6.20.6), tcp_mem is 24576, 32768, 49152 There is several memory_pressure in the `netstat -s`. After patching author John Heffner <jheffner@....edu> Fri, 16 Mar 2007 22:04:03 +0000 (15:04 -0700) commit 53cdcc04c1e85d4e423b2822b66149b6f2e52c2c [TCP]: Fix tcp_mem[] initialization. In 2.6.20.6-patched, tcp_mem is 97440, 129920, 194880 And during my benchmark, 'memory_pressure' is always 0. After these two days test, this patch works fine for me and benchmark gets a good result(as good as 2.6.18). Thank you very much for your help. -- Quan Sun - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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