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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
| commit | d0c85e36e4de67af628d54e9ab577cc3fad7796a (patch) | |
| tree | f8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/gemma3:12b/kvm/2242 | |
| parent | 7f4364274750eb8cb39a3e7493132fca1c01232e (diff) | |
| download | qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip | |
add deepseek and gemma results
Diffstat (limited to 'results/classifier/gemma3:12b/kvm/2242')
| -rw-r--r-- | results/classifier/gemma3:12b/kvm/2242 | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/kvm/2242 b/results/classifier/gemma3:12b/kvm/2242 new file mode 100644 index 000000000..c5c43e073 --- /dev/null +++ b/results/classifier/gemma3:12b/kvm/2242 @@ -0,0 +1,15 @@ + +Hugepages are not released after windows guest shutdown +Description of problem: +* Hugepages are not released after windows guest shutdown (tested with server 2019 and 2022), everything is ok with linux guests +* Issue is present in both cases: shutdown is initiated by guest, and with the qemu monitor command ``system_shutdown`` +* If the guest is configured with 4G as memory size, hugepages not released may vary but in most cases, only 1G are not released +* Host is a x86_64 linux system, with 1G hugepages only : kernel cmline contains ``default_hugepagesz=1G hugepagesz=1G hugepages=88`` +* I've done many tests with qemu components disabled (network, monitor, vnc), issue is still present with basic command line (launched as root) ``qemu-system-x86_64 -cpu host -enable-kvm -smp 4 -machine type=q35,accel=kvm -m 4G -mem-path /mnt/hugepages -drive id=drv0,file=win.qcow2 -nodefaults`` +* Same issue with args in command line, with or without prealloc: + + -m 4G -mem-path /mnt/hugepages [-mem-prealloc] + -m 4G -machine memory-backend=mem0 -object memory-backend-memfd,id=mem0,size=4G,hugetlb=on,hugetlbsize=1G[,prealloc=on] +Additional information: +* Hugepages release process is audited with command ``cat /proc/meminfo`` +* I can't find any online documentation to help to troubleshoot used hugepages : articles suggest to audit /proc/[pid]/smaps, but here, issue is raised after qemu process terminates |