Sunday, January 11, 2015

On profiling HTTP, or "god damnit people, why are all the open source tools slow?"

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Something that's been a challenge at work (and at other things in the past) has been "how do I generate enough traffic to test this...
Thursday, November 20, 2014

... mmm emulators.

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I occasionally get asked to test out FreeBSD/MIPS patches for people, as they don't have physical hardware present. I can understand tha...
1 comment:
Tuesday, October 28, 2014

More RSS UDP tests - this time on a Dell R720

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I've recently had the chance to run my RSS UDP test suite up on a pair of Dell R720s. They came with on-board 10G Intel NICs (ixgbe(4) i...
Friday, September 19, 2014

UDP RSS update: ixbge(4) turned out to have issues..

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I started digging deeper into the RSS performance on my home test platform. Four cores and one (desktop) socket isn't all that much, but...
1 comment:
Wednesday, September 10, 2014

Receive side scaling: testing UDP throughput

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I think it's about time I shared some more details about the RSS stuff going into FreeBSD and how I'm testing it. For now I'm ...
1 comment:
Friday, August 1, 2014

Receive Side Scaling: figuring out how to handle IP fragments

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The TL:DR; of this is - IP fragments are annoying. If everything was awesome and there were never IP fragments, all TCP and UDP frames wou...
Monday, July 21, 2014

Application awareness of receive side scaling (RSS) on FreeBSD

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Part of testing this receive side scaling work is designing a set of APIs that allow for some kind of affinity awareness. It's not easy ...