Messages in this thread | | | Date | Thu, 15 Aug 2013 08:14:21 -0700 | From | Dave Hansen <> | Subject | Re: page fault scalability (ext3, ext4, xfs) |
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On 08/14/2013 06:11 PM, Theodore Ts'o wrote: > The point is that if the goal is to measure page fault scalability, we > shouldn't have this other stuff happening as the same time as the page > fault workload.
will-it-scale does several different tests probing at different parts of the fault path:
https://www.sr71.net/~dave/intel/willitscale/systems/bigbox/3.11.0-rc2-dirty/foo.html
It does that both for process and threaded workloads which lets it get pretty good coverage of different areas of code.
I only posted data from half of one of these tests here because it was the only one that I found that both had noticeable overhead in the filesystem code. It also showed substantial, consistent, and measurable deltas between the different filesystems.
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