VirtualBox

9 月 前 建立

9 月 前 更新

#22102 new defect

If a guest OS is assigned more than 32 GB of RAM, it uses disk

回報者: f00dl3 負責人:
元件: VM control 版本: VirtualBox-7.0.18
關鍵字: RAM 副本:
Guest type: Linux Host type: Linux

描述

When a guest OS is assigned greater than 32 GB of RAM, it appears to thrash the disk maxing out the IO reads (502 MB/sec on a SSD.)

You can reproduce this bug by assigning 64 GB of RAM on a system with 128 GB of RAM. Once the RAM use inside the VM breaks 32 GB, it starts showing excessive disk reads/writes on iotop, which makes the virtual machine completely inaccessible and unresponsive, and OOM killer kills all processes active on the VM while this thrashing is occurring.

更動歷史 (1)

comment:1 9 月 前f00dl3 編輯

Problem actually still exists. Updated Linux kernel to 6.5 and that has not resolved the issue. Reducing RAM to 32 GB has provided a workaround for the moment, but would like to be able to assign more as this is the only reason I bought 128 GB of RAM.

The kernel upgrade has removed the excessive disk read/writes, but the guest OS "VDI" disk read/writes is limited to 0-50 kb/sec, even without any IO activity.

最後由 f00dl3 編輯於 9 月 前 (上一筆) (差異)
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