Showing posts with label netflix. Show all posts
Showing posts with label netflix. Show all posts
Saturday, December 14, 2013

Experimenting with zero-copy network IO in FreeBSD-HEAD

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Back when I started all of this networking hacking, the "big thing" was the overhead of doing poll() and select(). Various operati...
Tuesday, September 3, 2013

Finding low hanging fruit with PMC, or "O(wtf)" ?

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I've lately been focusing on performance counter stuff on Sandy Bridge (Xeon and non-Xeon.) Part of this has been fixing some of the cou...
Monday, August 19, 2013

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This blog post is mostly so I don't forget this kind of stuff. http://software.intel.com/sites/default/files/m/a/d/2/2/e/15529-Intel_V...
Tuesday, August 13, 2013

Profiling on superscalar architectures, or "no, instruction counts don't necessarily matter nowdays.."

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I could spend a lot of time brain dumping various things to do with profiling on anything more recent than Pentium 1 (or, well, anything rem...
2 comments:
Wednesday, August 7, 2013

Why, oh why am I seeing RST frames from FreeBSD when I have a high connection rate?

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I started seeing something odd in my testing. I was only getting around 120-odd new connections a second being accepted by the test server. ...
1 comment:
Tuesday, August 6, 2013

Hacking on the Intel 10GE driver (ixgbe) for fun and .. not-crashing

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My job at Netflix can be summed up as "make the Open Connect Platform better." This involves, among other things, improving FreeBS...
3 comments:
Wednesday, June 6, 2012

FreeBSD, Netflix, CDN

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The big news this week is the Netflix Openconnect platform , which was just announced . It uses off the shelf hardware - and FreeBSD + nginx...
3 comments: