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Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read
From: |
Fam Zheng |
Subject: |
Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read |
Date: |
Tue, 28 May 2013 19:14:01 +0800 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, 05/28 12:01, Richard W.M. Jones wrote:
> On Tue, May 28, 2013 at 11:35:20AM +0100, Richard W.M. Jones wrote:
> > I'm continuing to investigate.
>
> Some more data points:
>
> v6 patch, with my laptop plugged directly into the gigabit ethernet
> switch which is connected to the web server:
>
> - Worked perfectly 5 times in a row.
>
> v6 patch, with my laptop next to the wifi aerial:
>
> - Bug is harder to reproduce, maybe only happens 50% of runs.
>
> v6 patch, with my laptop about 100' from the wifi aerial:
>
> - Bug reproduces on every run.
>
> So something to do with long latency links.
>
> Question: Is there a place in the patch we could put a sleep in order
> to simulate a long latency link?
>
> I also checked the logs on the web server. There are no errors, and
> each access returned a 200 or 206. So the problem doesn't appear to
> be at the web server end.
>
> Rich.
>
There seems no easy way to me to inject sleep to io reqs in curl.c.
Another option might be configure & compile qemu with
CFLAGS=-DDEBUG_CURL and grab the stdout, so that we can see how requests
are processed.
--
Fam
- Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, (continued)
- Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, Richard W.M. Jones, 2013/05/24
- Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, Fam Zheng, 2013/05/26
- Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, Richard W.M. Jones, 2013/05/27
- Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, Fam Zheng, 2013/05/28
- Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, Richard W.M. Jones, 2013/05/28
- Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, Richard W.M. Jones, 2013/05/28
- Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, Fam Zheng, 2013/05/28
- Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, Richard W.M. Jones, 2013/05/28
Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, Richard W.M. Jones, 2013/05/28
Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read, Stefan Hajnoczi, 2013/05/28