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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:34:26 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:35:44 +0000 |
| commit | 25f8033d556aa17afaea4a5196ea7a69fe248320 (patch) | |
| tree | 0f056db167683be54ea1e5e72d29d6069af55e7d /results/classifier/deepseek-2-tmp/output/hypervisor/2242 | |
| parent | 8e6da29e4ee5fc14bc1cc816a24f21271f14090d (diff) | |
| download | emulator-bug-study-25f8033d556aa17afaea4a5196ea7a69fe248320.tar.gz emulator-bug-study-25f8033d556aa17afaea4a5196ea7a69fe248320.zip | |
add new temporary deepseek-r1:14b results
Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/hypervisor/2242')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/hypervisor/2242 | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/hypervisor/2242 b/results/classifier/deepseek-2-tmp/output/hypervisor/2242 new file mode 100644 index 00000000..c5c43e07 --- /dev/null +++ b/results/classifier/deepseek-2-tmp/output/hypervisor/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 |