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Diffstat (limited to 'results/classifier/accel-gemma3:12b/vmm/1609968')
| -rw-r--r-- | results/classifier/accel-gemma3:12b/vmm/1609968 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/results/classifier/accel-gemma3:12b/vmm/1609968 b/results/classifier/accel-gemma3:12b/vmm/1609968 new file mode 100644 index 000000000..bac735da3 --- /dev/null +++ b/results/classifier/accel-gemma3:12b/vmm/1609968 @@ -0,0 +1,32 @@ + +"cannot set up guest memory" b/c no automatic clearing of Linux' cache + +Version: qemu-2.6.0-1 +Kernel: 4.4.13-1-MANJARO +Full script (shouldn't matter though): https://pastebin.com/Hp24PWNE + +Problem: +When host has been up and used for a while cache has been filled as much that guest can't be started without droping caches. + +Expected behavior: +Qemu should be able to request as much Memory as it needs and cause Linux to drop cache pages if needed. A user shouldn't be required to have to come to this conclusion and having to drop caches to start Qemu with the required amount of memory. + +My fix: +Following command (as root) required before qemu start: +# sync && echo 3 > /proc/sys/vm/drop_caches + +Example: +$ sudo qemu.sh -m 10240 && echo success || echo failed +qemu-system-x86_64: cannot set up guest memory 'pc.ram': Cannot allocate memory +failed +$ free + total used free shared buff/cache available +Mem: 16379476 9126884 3462688 148480 3789904 5123572 +Swap: 0 0 0 +$ sudo sh -c 'sync && echo 3 > /proc/sys/vm/drop_caches' +$ free + total used free shared buff/cache available +Mem: 16379476 1694528 14106552 149772 578396 14256428 +Swap: 0 0 0 +$ sudo qemu.sh -m 10240 && echo success || echo failed +success \ No newline at end of file |