Date: Thu, 28 Apr 2011 11:01:10 -0400 From: Adam Stylinski <kungfujesus06@gmail.com> To: Mike Tancsa <mike@sentex.net> Cc: freebsd-net@freebsd.org Subject: Re: em0 performance subpar Message-ID: <20110428150110.GG2800@ossumpossum.geop.uc.edu> In-Reply-To: <4DB97A07.2020606@sentex.net> References: <20110428072946.GA11391@zephyr.adamsnet> <4DB965D8.7090906@sentex.net> <20110428132922.GC2800@ossumpossum.geop.uc.edu> <4DB96DDD.4070801@sentex.net> <20110428141500.GE2800@ossumpossum.geop.uc.edu> <4DB97A07.2020606@sentex.net>
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[-- Attachment #1 --] On Thu, Apr 28, 2011 at 10:30:31AM -0400, Mike Tancsa wrote: > On 4/28/2011 10:15 AM, Adam Stylinski wrote: > > > > > em0: <Intel(R) PRO/1000 Legacy Network Connection 1.0.3> port 0xe800-0xe83f mem 0xfe9e0000-0xfe9fffff,0xfe9c0000-0xfe9dffff irq 20 at device 5.0 on pci7 > > em0: [FILTER] > > I am not sure the newer driver will help performance wise. It might fix > that bug you saw at least. Jack from intel might be able to shed some > light on it. In the mean time, try generating traffic via netblast. > Another tool I find helpful in narrowing down tcp performance > differences is netperf > > ---Mike > > > -- > ------------------- > Mike Tancsa, tel +1 519 651 3400 > Sentex Communications, mike@sentex.net > Providing Internet services since 1994 www.sentex.net > Cambridge, Ontario Canada http://www.tancsa.com/ ./netblast 192.168.0.121 5001 32768 30 start: 1304002549.184689025 finish: 1304002579.187555311 send calls: 2163162 send errors: 2095950 approx send rate: 2240 approx error rate: 0 ? This output is a bit cryptic but from what I think I understand from the source code it's the number of successful sends of the payload size in 30 seconds. So to do the math: (32768*2210)/(1024*1024) 69.06250000000000000000MB/sec? This is still only saturating about half the link speed. -- Adam Stylinski PGP Key: http://pohl.ececs.uc.edu/~adam/publickey.pub Blog: http://technicallyliving.blogspot.com [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (FreeBSD) iQIcBAEBAgAGBQJNuYE2AAoJED6sRHE6TvmnndsP/1hPqPDI8TjXXEpndGX3ozIi 5rIerbED/+WpoIsj0cR45/aOl34X2F0UQLrOd/i15i5glCvQqo08ZzX0XNX3A1Db lKDIq/HLcndu5YH+UNkuhnwufj204c2zcTmvAnFd0PrZhTgpMN+I+hFDbnFbcy59 rqyGqdUUSaBEIPWJyiv8GT/jT7/gdGShyrqZPxQcg63xOUiFVcN2JzWXtA8mJWfS 8GvEchSHVc3iLeKUMhLkMpnE9C2dRRNdhFdJUV2c5uVlDxCKx1nj2fPAiVSkCLT6 HCJBjxL6oM8Whi830jabMCXgPVJCPavDI1f8JlzsH1GXl+ebz2fej+aPmwZ3PHDy S2p40x6egTfTzu2eEfX8+VovFJrEe8fxc8agEB/jvmvShiHgHgYjuSmcocFaUgR4 HGKxJj9Vq1T9QjNRt8tEJg9madxhoD3rf3apouDJaoMC6GrQBwhWiKF278HKSLR3 TX35KIrV5nAwbcKsdvwcsaUg7egP18xpl4QeHZaqDwkWRm7AMQA6sHKMoBHP8qwu KbpyZqjzYsPM7mV2Li3yCBbhVEVDmpMY5b/29ck/Chqi3ArAIFABbKzR1RT6vPyp s0FhEabm+oJkdX+YzyIKNBfRaKN14mUq28UjoGMVHjwA0rBN0IwYVE7Bg4nOgCQH ZofFmQ6Gmx6nPPUZZVKB =kgnd -----END PGP SIGNATURE-----
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