Network performance measurements of -current

[Andre Oppermann]

ShouYan Mao wrote:
> 
> So, would you try it with PCI-E Gigabit card?

I would if I had a PCI-E system and suitable PCI-E Gigabit cards.
Feel free to send me a test system.

-- 
Andre


> Best Regards.
> Shouyan
> 
> -------------------------------------------------------
> I'm not the best, but I try to do better.
> -------------------------------------------------------
> 
> -----Original Message-----
> From: owner-freebsd-net at freebsd.org [mailto:owner-freebsd-net at freebsd.org] On Behalf Of Andre Oppermann
> Sent: 2005Äê12ÔÂ23ÈÕ 2:17
> To: freebsd-current at freebsd.org
> Cc: freebsd-net at freebsd.org
> Subject: Network performance measurements of -current
> 
> As part my funded TCP/IP optimization work I'm doing lots of measurements
> and profiling with an Agilent N2X network tester and calibrated traffic
> generator.
> 
> The following data shall serve as baseline of the current performance we
> get out of FreeBSD 7-current.  More to come tomorrow though.
> 
> OS: FreeBSD 7-current as of 20051222-1600 UTC
> KERNEL: Generic kernel, minus WITNESS and INVARIANTS, plus HWPMC, HZ=1000
> HARDWARE: Dual Opteron 852 2.6Ghz, Tyan S2882 Mobo with AMD-8131 PCI-X tunnel
> HARDWARE: dual Broadcom Gigabit BMC5704C PCI-X-133 ("bge")
> HARDWARE: dual Intel Gigabit 82546EB PCI-X-133 ("em")
> 
> Uniprocessor kernel
> 
>  bge:
>   normal forwarding bge0->bge1:   @64/326kpps/166us/402kpps(30%Loss)/194us
>   normal forwarding bge0->bge1:   @1500/81kpps/520us
>   normal forwarding bge0->disc0:  @64/1205kpps
>   IP fastforwarding bge0->bge1:   @64/565kpps/192us/575kpps(60%Loss)/1090us
>   IP fastforwarding bge0->bge1:   @1500/81kpps/730us
>   IP fastforwarding bge0->disc0:  @64/1160kpps
>   net.isr.direct=1  bge0->bge1:   @64/476kpps/211us/487kpps(68%Loss)/1284us
>   net.isr.direct=1  bge0->bge1:   @1500/81kpps/760us
>   net.isr.direct=1  bge0->disc0:  @64/1250kpps
>   polling (*) bge0->bge1:
> @64/420kpps(9%Loss)/1385us/416kpps(72%Loss)/1600us
>   polling (*) bge0->bge1:         @1500/71kpps(9%Loss)/850us
>   polling (*) bge0->disc0:        @64/697kpps
> 
>  Comments: Under full load the normal processing breaks completely down
>   while with IP fastforwarding it levels off but continues to forward.
>   Strangely with polling it has 9% loss at all loads (even at 1% wirespeed).
>   May be related to HZ=1000.
> 
>  em:
>   normal forwarding em0->em1:     @64/372kpps/112us/396kpps(11%Loss)/131us
>   normal forwarding em0->em1:     @1500/81kpps/170us
>   normal forwarding em0->disc0:   @64/1130kpps
>   IP fastforwarding em0->em1:     @64/565kpps/45us/585kpps(4%Loss)/1600us
>   IP fastforwarding em0->em1:     @1500/81kpps/135us
>   IP fastforwarding em0->disc0:   @64/1116kpps
>   net.isr.direct=1  em0->em1:     later
>   net.isr.direct=1  em0->disc0:   later
>   polling (*) em0->em1:           later
>   polling (*) em0->disc0:         later
> 
> (*) max_burst=1000, user_frac=0, each_burst=30
> 
> Sponsored by:   TCP/IP Optimization Fundraise 2005
> 
> --
> Andre
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