qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Brad Campbell <brad@wasp.net.au>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Windows 2000 issues questions
Date: Mon, 10 Apr 2006 20:16:17 +0400	[thread overview]
Message-ID: <443A84D1.2050600@wasp.net.au> (raw)
In-Reply-To: <41e41e7a0604100819y54272d80nf944f8e1dc039310@mail.gmail.com>

Hetz Ben Hamo wrote:
> I'm sorry to bring this issues back from the dead:
> 
> * Full disk issues
> * Service pack issues
> 
> I Do know that both these issues have been dealt before, but yet,
> there is no "fix" from the QEMU application itself, compared to the
> "competitors"..
> 
> One thing that I don't understand is: are these issues related to DMA
> implementation in QEMU or rather to a specific chipset implementation?

Just to back up what Leo said.. I have his %16 -win2k-hack patch installed (which is required as you 
need to add the delay to DMA IO also) and if I leave -win2k-hack enabled I find very little 
performance degradation.. in addition to it enabling windows update to work. I'm sure it's either 
slowing down the VM or wasting cpu cycles, but it does work and does not knock things about 
noticeably (and I test on a PIII-M 1Ghz running at 750Mhz to give kinda worst case performance testing)

I do recall not having these issues with an async-io patch installed, but the last async-io patch I 
used changed the virtual ide controller and made all my vm's useless. I'm somewhat reticent to 
install another patch that is going to require me to re-install all my vm's.. but if there is one 
floating about that does not change the virtual hardware and is pretty self contained I'd be more 
than happy to run it through my test suite.

Brad
-- 
"Human beings, who are almost unique in having the ability
to learn from the experience of others, are also remarkable
for their apparent disinclination to do so." -- Douglas Adams

  parent reply	other threads:[~2006-04-10 16:14 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-04-10 15:19 [Qemu-devel] Windows 2000 issues questions Hetz Ben Hamo
2006-04-10 15:37 ` Leonardo E. Reiter
2006-04-10 16:16 ` Brad Campbell [this message]
2006-04-26  1:01   ` Troy Benjegerdes
2006-04-26  1:12     ` Leonardo E. Reiter

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=443A84D1.2050600@wasp.net.au \
    --to=brad@wasp.net.au \
    --cc=qemu-devel@nongnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).