> Wiadomość napisana przez Nhat Pham <nphamcs@xxxxxxxxx> w dniu 23.08.2024, o godz. 18:16: > > Have you tried with 6.9 yet? IIRC, there are two major changes to > zswap architecture in recent versions. No. But now building vanilla 6.9.12. Will install and see… (This will take some time as catching issue needs days of compilation) > > 1. In 6.9, we range-partition zswap's rbtrees to reduce lock contention. > > 2. In 6.10, we replace zswap's rbtrees with xarrays. > > If 6.9 is fine, then the latter is the suspect, and vice versa. Of > course, the minor changes are still suspect - but you get the idea :) > >> >> btw: we can go with elimination strategy. >> So what i need to change/disable to be closer to finding root cause? > > Could you let me know more about the setup? A couple things come to my mind: > > 1. zswap configs (allocator - is it zsmalloc? compressor?) Well - I’m not using zswap. [root@minimyth2-aarch64-next piotro]# swapon -s Filename Type Size Used Priority /dev/nvme0n1p3 partition 16776188 294164 -2 > > 2. Is mTHP enabled? mTHP swapout was merged in 6.10, and there seems I don’t have used config at the moment, but /sys/kernel/mm/transparent_hugepage in I see: │/hugepages-1024kB │/hugepages-128kB │/hugepages-16kB │/hugepages-2048kB │/hugepages-256kB │/hugepages-32kB │/hugepages-512kB │/hugepages-64kB > to be some conflicts with zswap, but Yosry will know more about this > than me... > > 3. Is there any proprietary driver etc.? > Only 2, both ryzen9 monitoring related: https://github.com/leogx9r/ryzen_smu/commits/master https://github.com/ocerman/zenpower/commits/master
