On 01.03.23 02:44, Yin, Fengwei wrote:
On Tue, 2023-02-28 at 12:28 -0800, Andrew Morton wrote:
On Tue, 28 Feb 2023 20:23:03 +0800 Yin Fengwei
<fengwei.yin@xxxxxxxxx> wrote:
Testing done with the V2 patchset in a qemu guest
with 4G mem + 512M zram:
- kernel mm selftest to trigger vmscan() and final hit
try_to_unmap_one().
- Inject hwpoison to hugetlb page to trigger try_to_unmap_one()
call against hugetlb.
- 8 hours stress testing: Firefox + kernel mm selftest + kernel
build.
Was any performance testing done with these changes?
I tried to collect the performance data. But found out that it's
not easy to trigger try_to_unmap_one() path (the only one I noticed
is to trigger page cache reclaim). And I am not aware of a workload
can show it. Do you have some workloads suggsted to run? Thanks.
If it happens barely, why care about performance and have a "398
insertions(+), 260 deletions(-)" ?
--
Thanks,
David / dhildenb
