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Kernel Space: Linux Runs Into a Scalability Problem

Apr 18, 2007, 22:30 (0 Talkback[s])
(Other stories by Jonathan Corbet)

"Part of the fun of working with truly large machines is that one gets to discover new scalability surprises before anybody else. So the SGI folks often have more fun than many of the rest of us. Their latest discovery has to do with the number of kernel threads which, on a 4096-processor system, leads to some interesting kernel behavior.

"To begin, they found out that they could not even boot a kernel with the default configuration. Linux systems normally have a limit of 32768 active processes at any given time..."

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