Re: [Qemu-devel] [PATCH v6 00/12] curl: fix curl read

[Stefan Hajnoczi]

On Tue, May 28, 2013 at 12:01:55PM +0100, 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?

Something like this?

tc qdisc add dev wlan0 root netem delay 200ms

Stefan