Re: [PATCH] libxl: Increase device model startup timeout to 1min.

[Anthony PERARD <anthony.perard@citrix.com>]

On Mon, Jun 29, 2015 at 03:51:57PM +0100, Ian Campbell wrote:
> On Mon, 2015-06-29 at 15:23 +0100, Anthony PERARD wrote:
> > On Fri, Jun 26, 2015 at 05:41:07PM +0100, Ian Campbell wrote:
> > > On Fri, 2015-06-26 at 12:57 +0100, Anthony PERARD wrote:
> > > > On a busy host, QEMU may take more than 10s to start.
> > > 
> > > Please show your working here so that in 2 years when we want to know
> > > why this value was chosen we don't have to go scrobbling around in the
> > > ML archives looking for the data you gathered.
> > 
> > OK. What about:
> 
> I'm afraid none of that really explains why QEMU taking >10s is
> reasonable/expected under the circumstances or why 60s is a good choice
> now.
> 
> Nor does it really answer Ian's question in
> <21901.33163.547929.321814@mariner.uk.xensource.com> I think.

I only know what happen, not why it happen.

How could I investigate why qemu is taking so long after an mmap() syscall?
I guest at that time, it is copying the library into memory.

-- 
Anthony PERARD