On 9/20/12 11:35 AM, Eggert, Lars wrote: > Hi, > > On Sep 20, 2012, at 9:25, Andrey Zonov <[email protected]> wrote: >> Some of them may be read google's article about tuning TCP parameters >> [1]. I convert most of TCP timers to sysctls [2] and we are using this >> patch for few months. We tuned net.inet.tcp.rtobase and >> net.inet.tcp.syncache.rexmttime and it gives good results (especially in >> conjunction with cc_htcp(4)). > > can you share some measurements that quantify the results? >
When we set net.inet.tcp.syncache.rexmttime=200 and net.inet.tcp.syncache.rexmtlimit=7 for our external web service, the number of duplicated SYN was reduced in four times. -- Andrey Zonov
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