Messages in this thread | | | From | Aaron Carroll <> | Date | Thu, 17 Apr 2008 20:24:09 +1000 | Subject | Re: [RESEND][RFC] BFQ I/O Scheduler |
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Paolo Valente wrote: > In my opinion, the time-slice approach of cfq is definitely better > suited than the (sector) budget approach for this type of workloads. On > the opposite end, the price of time-slices is unfairness towards, e.g., > threads doing sequential accesses. In bfq we were mainly thinking about
How do you figure that? This is a situation where time-slices work nicely, because they implicitly account for the performance penalty of poor access patterns. The sequential-accessing processes (and the system overall) ends up with higher throughput.
-- Aaron
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