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Bug#558426: atl1e performance problems with native IPv6



On Mon, 2009-12-07 at 08:27 +0100, Joerg Pareigis wrote:
> > [...]
> > I've built the module from the sources for the next stable kernel package, including this patch.  So try using this:
> >     http://womble.decadent.org.uk/tmp/atl1e.ko
> >
> OK, thanks a lot.
> Now I'm using this module.
> Unfortunately this module runs not perfect yet.
> At first I thought it's OK, because the output of "ls -lR /usr" is very fast, but when I start a X-Application through a
> "ssh -X host" I see a lot of truncated pakets :-(
> And also additional "ls -lR" tests produces truncated pakets...

Perhaps there's a second bug in it (or elsewhere).  The bug I could
reproduce is definitely fixed now.  I just re-tested that exact same
module by running a netperf TCP streaming test:

$ netperf -l 60 -H 10.42.43.10 -t TCP_MAERTS -- -H fe80::223:54ff:fe0b:134%2,inet6
TCP MAERTS TEST from ::0 (::) port 0 AF_INET6 to fe80::223:54ff:fe0b:134%2 (fe80::223:54ff:fe0b:134) port 0 AF_INET6 : demo
Recv   Send    Send                          
Socket Socket  Message  Elapsed              
Size   Size    Size     Time     Throughput  
bytes  bytes   bytes    secs.    10^6bits/sec  

 87380  16384  16384    60.32      92.80     

This is near-line-rate performance.  The MAC and IPv6 stats on this end
also showed no errors during this test.

Ben.

-- 
Ben Hutchings
Logic doesn't apply to the real world. - Marvin Minsky

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