Rik van Riel wrote:
Nick Piggin wrote:
Rik van Riel wrote:
Nick Piggin wrote:
Rik van Riel wrote:
Here are the transactions/seconds for each combination:
I've added a 5th column, with just your mmap_sem patch and
without my madv_free patch. It is run with the glibc patch,
which should make it fall back to MADV_DONTNEED after the
first MADV_FREE call fails.
vanilla new glibc madv_free kernel madv_free + mmap_sem
mmap_sem
threads
1 610 609 596 545 534
2 1032 1136 1196 1200 1180
4 1070 1128 2014 2024 2027
8 1000 1088 1665 2087 2089
16 779 1073 1310 1999 2012
Now that I think about it - this is all with the rawhide kernel
configuration, which has an ungodly number of debug config
options enabled.
I should try this with a more normal kernel, on various different
systems.
It would also be helpful if other people tried this same benchmark,
and others, on their systems.
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