On 5/26/20 5:45 PM, Roman Gushchin wrote: > On Tue, May 26, 2020 at 05:24:46PM +0200, Vlastimil Babka wrote: >> 1 << 20 ? >> >> Anyway I was getting this: >> not ok 1 test_kmem_basic >> ok 2 test_kmem_memcg_deletion >> ok 3 test_kmem_proc_kpagecgroup >> not ok 4 test_kmem_kernel_stacks >> ok 5 test_kmem_dead_cgroups >> >> Adding some debugging into kmem_basic I found I get memory.stat == 0 at this >> point thus it fails the fixed test (otherwise it was failing the <= 0 test after >> writing to memory.high). But it's just a VM spinned by virtme which has a very >> simple init, so perhaps things are not as initialized as expected. > > Hm, it's strange, do you have any values in memory.stat::slab for any cgroups? > Or can you send me your config (and kvm setup), I'll take a look. Config is attached, KVM setup is just running virtme [1] on the git gree where I compiled the kernel: virtme-run --mods=auto --kdir /path/to/linux.git/ So there's only the cgroup the test creates, and the memry.stat::slab is zero after alloc_dcache(). Although I can see by strace that it does all those stat()'s. Also /proc/slabinfo also doesn't seem to be increasing number of dentries. Could be that because root fs is 9p in virtme? [1] https://github.com/amluto/virtme > Btw, thank you very much for reviewing the series! I appreciate it. > I'll integrate your feedback into the next version, which I'm working on right now. > > Thanks! >
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