Comments (5)
yizhanglinux
commented on September 28, 2024
@kawasaki FYI
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igaw
commented on September 28, 2024
Could you post the output of these commands here?
nvme id-ns /dev/nvmeXnY
cat /proc/meminfoThe test fails because the tests is allocate bigger chunks of linear memory and it might be that this machine runs out of big blocks of memory.
The allocation strategy is to use posix_memalign for allocation below 512k first. For larger allocation we try hugetlb and if this fails it's posix_memalign/madvise.
One thing you could try is, if /proc/sys/vm/nr_hugepages is return 0, tell the kernel to reserve a few of the hugepages before running the test:
echo 20 > /proc/sys/vm/nr_hugepages
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yizhanglinux
commented on September 28, 2024
Could you post the output of these commands here?
nvme id-ns /dev/nvmeXnY cat /proc/meminfo
Here is the info:
NVME Identify Namespace 1:
nsze : 0x200000
ncap : 0x200000
nuse : 0x200000
nsfeat : 0x12
nlbaf : 0
flbas : 0
mc : 0
dpc : 0
dps : 0
nmic : 0x1
rescap : 0
fpi : 0
dlfeat : 0
nawun : 0
nawupf : 0
nacwu : 0
nabsn : 0
nabo : 0
nabspf : 0
noiob : 0
nvmcap : 0
npwg : 0
npwa : 0
npdg : 7
npda : 7
nows : 0
mssrl : 0
mcl : 0
msrc : 0
nulbaf : 0
anagrpid: 1
nsattr : 0
nvmsetid: 0
endgid : 0
nguid : 00000000000000000000000000000000
eui64 : 0000000000000000
lbaf 0 : ms:0 lbads:9 rp:0 (in use)
MemTotal: 2020144 kB
MemFree: 1706188 kB
MemAvailable: 1820712 kB
Buffers: 5516 kB
Cached: 119724 kB
SwapCached: 0 kB
Active: 144008 kB
Inactive: 37584 kB
Active(anon): 56684 kB
Inactive(anon): 0 kB
Active(file): 87324 kB
Inactive(file): 37584 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 2019324 kB
SwapFree: 2019324 kB
Zswap: 0 kB
Zswapped: 0 kB
Dirty: 168 kB
Writeback: 0 kB
AnonPages: 56372 kB
Mapped: 47772 kB
Shmem: 332 kB
KReclaimable: 14016 kB
Slab: 61652 kB
SReclaimable: 14016 kB
SUnreclaim: 47636 kB
KernelStack: 3456 kB
PageTables: 6904 kB
SecPageTables: 0 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 3029396 kB
Committed_AS: 236332 kB
VmallocTotal: 534773760 kB
VmallocUsed: 20336 kB
VmallocChunk: 0 kB
Percpu: 24064 kB
CmaTotal: 4096 kB
CmaFree: 4096 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 1024 kB
Hugetlb: 0 kB
DirectMap4k: 116736 kB
DirectMap1M: 1980416 kB
DirectMap2G: 0 kB
The test fails because the tests is allocate bigger chunks of linear memory and it might be that this machine runs out of big blocks of memory.
The allocation strategy is to use posix_memalign for allocation below 512k first. For larger allocation we try hugetlb and if this fails it's posix_memalign/madvise.
One thing you could try is, if
/proc/sys/vm/nr_hugepagesis return 0, tell the kernel to reserve a few of the hugepages before running the test:echo 20 > /proc/sys/vm/nr_hugepages
Yeah, the nr_hugepages is 0, it works now after changing it to 20.
from nvme-cli.
igaw
commented on September 28, 2024
https://lore.kernel.org/linux-nvme/[email protected]/
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yizhanglinux
commented on September 28, 2024
Thanks, close this issue now.
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