Messages in this thread | | | Date | Tue, 15 May 2007 23:12:59 -0700 | From | William Lee Irwin III <> | Subject | Re: 2.6.21 numa policy and huge pages not working |
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On Tue, May 15, 2007 at 10:41:06PM -0700, dean gaudet wrote: > prior to 2.6.21 i could "numactl --interleave=all" and use SHM_HUGETLB and > the interleave policy would be respected. as of 2.6.21 it doesn't seem to > respect the policy on SHM_HUGETLB request. > see test program below. > output from pre-2.6.21: > 2ab196200000 interleave=0-3 file=/2\040(deleted) huge dirty=32 N0=8 N1=8 N2=8 N3=8 > 2ab19a200000 default file=/SYSV00000000\040(deleted) dirty=16384 active=0 N0=4096 N1=4096 N2=4096 N3=4096 > output from 2.6.21: > 2b49b1c00000 default file=/10\040(deleted) huge dirty=32 N3=32 > 2b49b5c00000 default file=/SYSV00000000\040(deleted) dirty=16384 active=0 N0=4096 N1=4096 N2=4096 N3=4096 > was this an intentional behaviour change? it seems to be only affecting > SHM_HUGETLB allocations. (i haven't tested hugetlbfs yet.) > run with "numactl --interleave=all ./shmtest"
This was not intentional. I'll search for where it broke.
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