Re: [PATCH] mm: hugetlb: support get/set_policy for hugetlb_vm_ops

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 12.10.22 10:15, Albert Huang wrote:
From: "huangjie.albert" <huangjie.albert@xxxxxxxxxxxxx>

implement these two functions so that we can set the mempolicy to
the inode of the hugetlb file. This ensures that the mempolicy of
all processes sharing this huge page file is consistent.

In some scenarios where huge pages are shared:
if we need to limit the memory usage of vm within node0, so I set qemu's
mempilciy bind to node0, but if there is a process (such as virtiofsd)
shared memory with the vm, in this case. If the page fault is triggered
by virtiofsd, the allocated memory may go to node1 which  depends on
virtiofsd.


Any VM that uses hugetlb should be preallocating memory. For example, this is the expected default under QEMU when using huge pages.

Once preallocation does the right thing regarding NUMA policy, there is no need to worry about it in other sub-processes.

--
Thanks,

David / dhildenb





[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux