On Thu, Jul 01, 2010 at 04:54:47PM -0700, Pyun YongHyeon wrote: > On Wed, Jun 30, 2010 at 07:00:53PM -0700, Garrett Cooper wrote: > > Hi, > > Just an observation I made while transferring a file: > > > > # time scp floppy.img somehost: > > Password: > > floppy.img 100% 1440KB 13.7KB/s 01:45 > > > > real 1m59.400s > > user 0m0.031s > > sys 0m0.028s > > # sysctl net.inet.tcp.tso=0 > > net.inet.tcp.tso: 1 -> 0 > > # time scp floppy.img somehost: > > floppy.img 100% 1440KB 1.4MB/s 00:00 > > > > real 0m0.712s > > user 0m0.018s > > sys 0m0.018s > > > > Going ISDN speeds transferring a 1.44MB file is sad when you have > > a gigabit uplink :(... natd seems to be doing a LOT of spinning when > > TSO is enabled (it's going up to 73% CPU on a dual-proc quad-core > > machine). > I would use pf(4) if I have to handle lots of NAT rules. Or ipfw nat. man ipfw | grep nat
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