Date: Sun, 10 Jan 2010 23:04:08 -0800 From: David Ehrmann <ehrmann@gmail.com> To: pyunyh@gmail.com Cc: freebsd-current@freebsd.org Subject: Re: vge traffic problem Message-ID: <4B4ACD68.5030907@gmail.com> In-Reply-To: <20100109013145.GG18529@michelle.cdnetworks.com> References: <4B40AFFA.6090706@gmail.com> <20100103221630.GV1166@michelle.cdnetworks.com> <4B47B4F6.8030106@gmail.com> <20100109013145.GG18529@michelle.cdnetworks.com>
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Pyun YongHyeon wrote: > On Fri, Jan 08, 2010 at 02:43:02PM -0800, David Ehrmann wrote: > >> It seems to be working, but I'm going to keep testing it before I >> >> proclaim it fixed. Will these changes be in 8.1? >> I spoke too soon. Now an nfs client is having problems. I ran iperf and saw what looks like a decent rx connection, but a tx connection where up to 2% of UDP packets are dropped (see http://pastebin.com/m1c067417 ). If both sides are gigabit connections, I see more like 13%. If I flip client and server sides, the results still show issues with vge tx. I ran iperf like this: iperf -s -u -r and iperf -c 10.0.x.x -u -r. Other machines have problems with the vge interface, but drop no more than a packet between themselves. This doesn't happen with my vr interface. I gave it an IP in a 192.168.x.x subnet and repeated the test. Most of the time, zero packets were dropped. When packets were dropped, it was fewer than 2%. Are there any known bugs that cause UDP tx packet drops on vge?
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