[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH] virtio-blk: Avoid zeroing every request struct
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH] virtio-blk: Avoid zeroing every request structure |
Date: |
Tue, 18 May 2010 20:02:30 +0100 |
On Tue, May 18, 2010 at 5:37 PM, Corentin Chary
<address@hidden> wrote:
> Did you try to profile using calloc in qemu_mallocz instead of malloc +
> memset ?
No, I didn't try it. I don't see how it could perform on par with not
clearing memory at all. Something is going to have to clear that
memory when using memset() or calloc(). Either libc or the kernel (if
using mmap).
Stefan
Re: [Qemu-devel] [PATCH] virtio-blk: Avoid zeroing every request structure, Corentin Chary, 2010/05/18
- Re: [Qemu-devel] [PATCH] virtio-blk: Avoid zeroing every request structure,
Stefan Hajnoczi <=
- Re: [Qemu-devel] [PATCH] virtio-blk: Avoid zeroing every request structure, Corentin Chary, 2010/05/18
- Re: [Qemu-devel] [PATCH] virtio-blk: Avoid zeroing every request structure, Stefan Hajnoczi, 2010/05/18
- Re: [Qemu-devel] [PATCH] virtio-blk: Avoid zeroing every request structure, Stefan Hajnoczi, 2010/05/21
- [Qemu-devel] [PATCH 0/2] Tidy qemu_malloc, Richard Henderson, 2010/05/21
- Re: [Qemu-devel] [PATCH 0/2] Tidy qemu_malloc, Aurelien Jarno, 2010/05/28
- [Qemu-devel] [PATCH 2/2] linux-user: Use qemu-malloc.c., Richard Henderson, 2010/05/21
- [Qemu-devel] [PATCH 1/2] Use calloc in qemu_mallocz., Richard Henderson, 2010/05/21