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Re: [Qemu-devel] [PATCH] virtio: limit avail bytes lookahead
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From: |
Amit Shah |
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Subject: |
Re: [Qemu-devel] [PATCH] virtio: limit avail bytes lookahead |
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Date: |
Fri, 2 Nov 2012 15:26:41 +0530 |
On (Thu) 01 Nov 2012 [18:07:21], Michael S. Tsirkin wrote:
> Commit 0d8d7690850eb0cf2b2b60933cf47669a6b6f18f introduced
> a regression in virtio-net performance because it looks
> into the ring aggressively while we really only care
> about a single packet worth of buffers.
> To fix, add parameters limiting lookahead, and
> use in virtqueue_avail_bytes.
>
> Signed-off-by: Michael S. Tsirkin <address@hidden>
> Reported-by: Edivaldo de Araujo Pereira <address@hidden>
Acked-by: Amit Shah <address@hidden>
Amit
- Re: [Qemu-devel] [Bug 1066055] Re: Network performance regression with vde_switch, Amit Shah, 2012/11/01
- Re: [Qemu-devel] [Bug 1066055] Re: Network performance regression with vde_switch, Michael S. Tsirkin, 2012/11/01
- Re: [Qemu-devel] [PATCH] virtio: limit avail bytes lookahead, Michael S. Tsirkin, 2012/11/27
- Re: [Qemu-devel] [PATCH] virtio: limit avail bytes lookahead, Edivaldo de Araujo Pereira, 2012/11/27
- Re: [Qemu-devel] [PATCH] virtio: limit avail bytes lookahead, Anthony Liguori, 2012/11/27
- Re: [Qemu-devel] [PATCH] virtio: limit avail bytes lookahead, Michael S. Tsirkin, 2012/11/28
- Re: [Qemu-devel] [PATCH] virtio: limit avail bytes lookahead, Amit Shah, 2012/11/29
- Re: [Qemu-devel] [PATCH] virtio: limit avail bytes lookahead, Michael S. Tsirkin, 2012/11/29
- Re: [Qemu-devel] [PATCH] virtio: limit avail bytes lookahead, Anthony Liguori, 2012/11/29