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Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protoc
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation |
Date: |
Sun, 14 Apr 2013 11:28:27 +0300 |
On Fri, Apr 12, 2013 at 09:47:08AM -0400, Michael R. Hines wrote:
> Second, as I've explained, I strongly, strongly disagree with unregistering
> memory for all of the aforementioned reasons - workloads do not
> operate in such a manner that they can tolerate memory to be
> pulled out from underneath them at such fine-grained time scales
> in the *middle* of a relocation and I will not commit to writing a solution
> for a problem that doesn't exist.
Exactly same thing happens with swap, doesn't it?
You are saying workloads simply can not tolerate swap.
> If you can prove (through some kind of anaylsis) that workloads
> would benefit from this kind of fine-grained memory overcommit
> by having cgroups swap out memory to disk underneath them
> without their permission, I would happily reconsider my position.
>
> - Michael
This has nothing to do with cgroups directly, it's just a way to
demonstrate you have a bug.
--
MST
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, (continued)
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael S. Tsirkin, 2013/04/14
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael R. Hines, 2013/04/14
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael S. Tsirkin, 2013/04/14
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael R. Hines, 2013/04/14
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael S. Tsirkin, 2013/04/15
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael R. Hines, 2013/04/15
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Paolo Bonzini, 2013/04/15
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael R. Hines, 2013/04/15
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Paolo Bonzini, 2013/04/15
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael R. Hines, 2013/04/12
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael R. Hines, 2013/04/14
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael S. Tsirkin, 2013/04/14
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael R. Hines, 2013/04/14
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael S. Tsirkin, 2013/04/14
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael R. Hines, 2013/04/14
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael S. Tsirkin, 2013/04/15
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Paolo Bonzini, 2013/04/15
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael R. Hines, 2013/04/15
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Paolo Bonzini, 2013/04/15
- Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation, Michael R. Hines, 2013/04/15