Re: [win-pv-devel] Disk in task manager + Windows write cache

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: win-pv-devel [mailto:win-pv-devel-bounces@xxxxxxxxxxxxxxxxxxxx] On
> Behalf Of Andreas Kinzler
> Sent: 31 August 2017 11:46
> To: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> Subject: [win-pv-devel] Disk in task manager + Windows write cache
> 
> Hello,
> 
> is it correct that the Xen disks do not appear in the performance tab of
> the Windows task manager?
> 

That sounds a little odd. I can see my PV system disk in task manager running 
on a Windows redstone 2 VM. I'm running the 9.0 driver but I don't think 
anything has massively changed since 8.2.

> Another question is about the state of write caching (see
> http://imgur.com/a/pkNTq). Windows says the setting cannot be changed
> and
> it seems off. Is that really true?
> 

That may be true. There have been some adjustments in that area. It's also 
dependent upon what features your backend advertises. For instance I'm using a 
QEMU qdisk backend and, with that, the 9.0 frontend tells me caching is enabled.

> winpv driver is from the 8.2 branch. I am currently researching some
> performance problems.
> 

Probably best to try the 9.0 driver. It's likely there will be an 8.2.1 release 
of at least some of the drivers and it would be good to know if there are some 
more patches that really need to be back-ported from 9.0.

  Cheers,

    Paul

> Regards Andreas
> 
> _______________________________________________
> win-pv-devel mailing list
> win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> https://lists.xenproject.org/cgi-bin/mailman/listinfo/win-pv-devel
_______________________________________________
win-pv-devel mailing list
win-pv-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/cgi-bin/mailman/listinfo/win-pv-devel