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Re: [Qemu-devel] [PATCH v2 4/4] coroutine: pool coroutines to speed up c
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] [PATCH v2 4/4] coroutine: pool coroutines to speed up creation |
Date: |
Thu, 12 May 2011 12:13:06 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.15) Gecko/20101027 Fedora/3.0.10-1.fc12 Thunderbird/3.0.10 |
terAm 12.05.2011 11:54, schrieb Stefan Hajnoczi:
> This patch speeds up coroutine creation by reusing freed coroutines.
> When a coroutine terminates it is placed in the pool instead of having
> its resources freed. The next time a coroutine is created it can be
> taken straight from the pool and requires no initialization.
>
> Performance results on an Intel Core2 Duo T9400 (2.53GHz) for
> ./check-coroutine --benchmark-lifecycle 20000000:
>
> No pooling: 19.5 sec
> With pooling: 1.1 sec
>
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
> check-coroutine.c | 2 ++
> qemu-coroutine-int.h | 2 ++
> qemu-coroutine.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++---
> qemu-coroutine.h | 9 +++++++++
> vl.c | 2 ++
> 5 files changed, 61 insertions(+), 3 deletions(-)
>
> diff --git a/check-coroutine.c b/check-coroutine.c
> index 5a42c49..223c50c 100644
> --- a/check-coroutine.c
> +++ b/check-coroutine.c
> @@ -218,6 +218,8 @@ int main(int argc, char **argv)
> };
> int i;
>
> + qemu_coroutine_init();
Can we use module_init instead of adding an explicit call to main()?
This would prevent forgetting to add it in qemu-img and qemu-io like in
this patch.
Kevin
- [Qemu-devel] [PATCH v2 0/4] Coroutines for better asynchronous programming, Stefan Hajnoczi, 2011/05/12
- [Qemu-devel] [PATCH v2 4/4] coroutine: pool coroutines to speed up creation, Stefan Hajnoczi, 2011/05/12
- Re: [Qemu-devel] [PATCH v2 4/4] coroutine: pool coroutines to speed up creation,
Kevin Wolf <=
- Re: [Qemu-devel] [PATCH v2 4/4] coroutine: pool coroutines to speed up creation, Stefan Hajnoczi, 2011/05/12
- Re: [Qemu-devel] [PATCH v2 4/4] coroutine: pool coroutines to speed up creation, Kevin Wolf, 2011/05/12
- Re: [Qemu-devel] [PATCH v2 4/4] coroutine: pool coroutines to speed up creation, Paolo Bonzini, 2011/05/12
- Re: [Qemu-devel] [PATCH v2 4/4] coroutine: pool coroutines to speed up creation, Stefan Hajnoczi, 2011/05/12
- Re: [Qemu-devel] [PATCH v2 4/4] coroutine: pool coroutines to speed up creation, Paolo Bonzini, 2011/05/12
- Re: [Qemu-devel] [PATCH v2 4/4] coroutine: pool coroutines to speed up creation, Stefan Hajnoczi, 2011/05/12
[Qemu-devel] [PATCH v2 2/4] coroutine: add check-coroutine automated tests, Stefan Hajnoczi, 2011/05/12
[Qemu-devel] [PATCH v2 3/4] coroutine: add check-coroutine --benchmark-lifecycle, Stefan Hajnoczi, 2011/05/12
[Qemu-devel] [PATCH v2 1/4] coroutine: introduce coroutines, Stefan Hajnoczi, 2011/05/12