Messages in this thread | | | Date | Fri, 30 Jun 2006 04:05:54 +1000 | From | Nick Piggin <> | Subject | Re: [Patch][RFC] Disabling per-tgid stats on task exit in taskstats |
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Paul Jackson wrote: >>You're probably correct on that model. However, it all depends on the actual >>workload. Are people who actually have large-CPU (>256) systems actually >>running fork()-heavy things like webservers on them, or are they running things >>like database servers and computations, which tend to have persistent >>processes? > > > It may well be mostly as you say - the large-CPU systems not running > the fork() heavy jobs. > > Sooner or later, someone will want to run a fork()-heavy job on a > large-CPU system. On a 1024 CPU system, it would apparently take > just 14 exits/sec/CPU to hit this bottleneck, if Jay's number of > 14000 applied.
Half the CPUs in that system are probably going to be several router hops away, won't they? I'll take a guess and say they're an order of magnitude too optimistic for such a system ;)
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