On Fri, 2019-10-25 at 15:27 +0200, Michal Hocko wrote: > On Fri 25-10-19 15:10:39, Robert Stupp wrote: > [...] > > cat /proc/$(pidof test)/smaps > > Nothing really unusual that would jump at me except for > > 7f8be90ed000-7f8be9265000 r-xp 00025000 103:02 > > 44307431 /lib/x86_64-linux-gnu/libc-2.30.so > > Size: 1504 kB > > KernelPageSize: 4 kB > > MMUPageSize: 4 kB > > Rss: 832 kB > > Pss: 5 kB > > Shared_Clean: 832 kB > > Shared_Dirty: 0 kB > > Private_Clean: 0 kB > > Private_Dirty: 0 kB > > Referenced: 832 kB > > Anonymous: 0 kB > > LazyFree: 0 kB > > AnonHugePages: 0 kB > > ShmemPmdMapped: 0 kB > > Shared_Hugetlb: 0 kB > > Private_Hugetlb: 0 kB > > Swap: 0 kB > > SwapPss: 0 kB > > Locked: 5 kB > > Huh, 5kB, is this really the case or some copy&paste error? > How can we end up with !pagesize multiple here? > > > THPeligible: 0 > > VmFlags: rd ex mr mw me lo sd mlockall() seems to lock everything though, it just never returns. Pretty sure that it's not a copy&paste error. Got a couple more runs that have an "odd size" - this time with 3kB... All "Locked" values seem to be okay - except that one. And it's always odd for the same one (the one with `Size: 1504 kB`). It's not always odd (3 kB or 5 kB) though - sometimes it says 4 kB. Seems it's a little breadcrumb? 560429953000-560429954000 r--p 00000000 103:02 49172550 /home/snazy/devel/misc/zzz/test Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 4 kB Private_Dirty: 0 kB Referenced: 4 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd mr mw me dw lo sd 560429954000-560429955000 r-xp 00001000 103:02 49172550 /home/snazy/devel/misc/zzz/test Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 4 kB Private_Dirty: 0 kB Referenced: 4 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd ex mr mw me dw lo sd 560429955000-560429956000 r--p 00002000 103:02 49172550 /home/snazy/devel/misc/zzz/test Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 4 kB Private_Dirty: 0 kB Referenced: 4 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd mr mw me dw lo sd 560429956000-560429957000 r--p 00002000 103:02 49172550 /home/snazy/devel/misc/zzz/test Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 4 kB Referenced: 4 kB Anonymous: 4 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd mr mw me dw lo ac sd 560429957000-560429958000 rw-p 00003000 103:02 49172550 /home/snazy/devel/misc/zzz/test Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 4 kB Referenced: 4 kB Anonymous: 4 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd wr mr mw me dw lo ac sd 5604299e7000-560429a08000 rw-p 00000000 00:00 0 [heap] Size: 132 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 132 kB Pss: 132 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 132 kB Referenced: 132 kB Anonymous: 132 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 132 kB THPeligible: 0 VmFlags: rd wr mr mw me lo ac sd 7f243057c000-7f24305a1000 r--p 00000000 103:02 44307431 /lib/x86_64-linux-gnu/libc-2.30.so Size: 148 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 144 kB Pss: 0 kB Shared_Clean: 144 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 144 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr mw me lo sd 7f24305a1000-7f2430719000 r-xp 00025000 103:02 44307431 /lib/x86_64-linux-gnu/libc-2.30.so Size: 1504 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 816 kB Pss: 3 kB Shared_Clean: 816 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 816 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 3 kB THPeligible: 0 VmFlags: rd ex mr mw me lo sd 7f2430719000-7f2430763000 r--p 0019d000 103:02 44307431 /lib/x86_64-linux-gnu/libc-2.30.so Size: 296 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 128 kB Pss: 0 kB Shared_Clean: 128 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 128 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr mw me lo sd 7f2430763000-7f2430766000 r--p 001e6000 103:02 44307431 /lib/x86_64-linux-gnu/libc-2.30.so Size: 12 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 12 kB Pss: 12 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 12 kB Referenced: 12 kB Anonymous: 12 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 12 kB THPeligible: 0 VmFlags: rd mr mw me lo ac sd 7f2430766000-7f2430769000 rw-p 001e9000 103:02 44307431 /lib/x86_64-linux-gnu/libc-2.30.so Size: 12 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 12 kB Pss: 12 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 12 kB Referenced: 12 kB Anonymous: 12 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 12 kB THPeligible: 0 VmFlags: rd wr mr mw me lo ac sd 7f2430769000-7f243076f000 rw-p 00000000 00:00 0 Size: 24 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 24 kB Pss: 24 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 24 kB Referenced: 24 kB Anonymous: 24 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 24 kB THPeligible: 0 VmFlags: rd wr mr mw me lo ac sd 7f243079a000-7f243079b000 r--p 00000000 103:02 44302414 /lib/x86_64-linux-gnu/ld-2.30.so Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 0 kB Shared_Clean: 4 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 4 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr mw me dw lo sd 7f243079b000-7f24307bd000 r-xp 00001000 103:02 44302414 /lib/x86_64-linux-gnu/ld-2.30.so Size: 136 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 136 kB Pss: 0 kB Shared_Clean: 136 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 136 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd ex mr mw me dw lo sd 7f24307bd000-7f24307c5000 r--p 00023000 103:02 44302414 /lib/x86_64-linux-gnu/ld-2.30.so Size: 32 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 32 kB Pss: 0 kB Shared_Clean: 32 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 32 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr mw me dw lo sd 7f24307c6000-7f24307c7000 r--p 0002b000 103:02 44302414 /lib/x86_64-linux-gnu/ld-2.30.so Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 4 kB Referenced: 4 kB Anonymous: 4 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd mr mw me dw lo ac sd 7f24307c7000-7f24307c8000 rw-p 0002c000 103:02 44302414 /lib/x86_64-linux-gnu/ld-2.30.so Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 4 kB Referenced: 4 kB Anonymous: 4 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd wr mr mw me dw lo ac sd 7f24307c8000-7f24307c9000 rw-p 00000000 00:00 0 Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 4 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 4 kB Referenced: 4 kB Anonymous: 4 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 4 kB THPeligible: 0 VmFlags: rd wr mr mw me lo ac sd 7ffe7d4d0000-7ffe7d4f2000 rw-p 00000000 00:00 0 [stack] Size: 136 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 20 kB Pss: 20 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 20 kB Referenced: 20 kB Anonymous: 20 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 20 kB THPeligible: 0 VmFlags: rd wr mr mw me gd lo ac 7ffe7d502000-7ffe7d505000 r--p 00000000 00:00 0 [vvar] Size: 12 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 0 kB Pss: 0 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 0 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr pf io de dd sd 7ffe7d505000-7ffe7d506000 r-xp 00000000 00:00 0 [vdso] Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 4 kB Pss: 0 kB Shared_Clean: 4 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 4 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd ex mr mw me de sd ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall] Size: 4 kB KernelPageSize: 4 kB MMUPageSize: 4 kB Rss: 0 kB Pss: 0 kB Shared_Clean: 0 kB Shared_Dirty: 0 kB Private_Clean: 0 kB Private_Dirty: 0 kB Referenced: 0 kB Anonymous: 0 kB LazyFree: 0 kB AnonHugePages: 0 kB ShmemPmdMapped: 0 kB Shared_Hugetlb: 0 kB Private_Hugetlb: 0 kB Swap: 0 kB SwapPss: 0 kB Locked: 0 kB THPeligible: 0 VmFlags: ex
