Messages in this thread |  | | | Date | 31 May 2005 13:14:45 +0200 | | Date | Tue, 31 May 2005 13:14:45 +0200 | | From | Andi Kleen <> | | Subject | Re: RT patch acceptance |
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On Tue, May 31, 2005 at 06:48:50AM -0400, James Bruce wrote: > P.S. Preempt-RT is a sight to behold while updatedb is running. The > difference between it and ordinary preempt is quite impressive. Nothing > currently running has so much as a hiccup, even though / is using the > non-latency-friendly ReiserFS. The only way I even notice updatedb is > running at all is through my CPU monitor and the fact that disk IO is > slower.
Are you sure it is not only disk IO? In theory updatedb shouldn't need much CPU, but it eats a lot of memory and causes stalls in the disk (or at least that was my interpration on the stalls I saw) If there is really a scheduling latency problem with updatedb then that definitely needs to be fixed in the stock kernel.
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