| To: | "'Dirk Utterback'" <dirk.utterback@xxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-devel] Windows SMP |
| From: | "Venefax" <venefax@xxxxxxxxx> |
| Date: | 2008年12月28日 21:48:44 -0500 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | 2008年12月28日 18:50:10 -0800 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:cc:references :in-reply-to:subject:date:message-id:mime-version:content-type :x-mailer:thread-index:content-language; bh=fIa8tG/PMXdYg6MjA4UA7NovYjU7v1bSvrp0mtw/K88=; b=GN3f/XZ+dksAAhkhGx7ABFMNuiNz8nbEpRvbf7ViQwN330+zJsRVZlMayK/F8eQW8r WSIWVUUuQJ6CU7nBzeGuHwRohMITZryFrZL0VYCIxI26dV/hp+w5DFt4SK6VHQEqHJlh ecJDs/9XKIOQeefdrnG1OmtiAXTciNPWo0Ka8= |
| Domainkey-signature: | a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:references:in-reply-to:subject:date:message-id :mime-version:content-type:x-mailer:thread-index:content-language; b=GCQVLloAurlScRM/QDv7E3uXiE6khyd+zft+W3z2sEkKbVdfmmygHdcc6FCkCbnZkN oyH3Lke3Nd1Yl/XT/IK876K1iLHjiDj+5R5iggU1j8ItKxUdzUrJ0oMmtxTuSgWEfBk4 GNA3ubKkKvEKCQVWH8qkzU7p+LRSJHgSSFrDc= |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <ec47b4a0812281839s58619d6ckaa0d9d92eac71ff6@xxxxxxxxxxxxxx> |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| References: | <AclomJHRZPQAxvWTTHS1LTFPOLU6fA==> <036501c96898959ドルaaef0$c0d00cd0$@com > <ec47b4a0812281839s58619d6ckaa0d9d92eac71ff6@xxxxxxxxxxxxxx> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AclpXq3FDdh9/hRMR7SA68V92eNifgAAPoJw |
The problem is not SMP, is ACPI. I installed a non-ACPI Hal, but SMP capable, and the performance went right up with 4 virtual processors.
I hope the developers can look into this mess.
Federico
From: Dirk Utterback
[mailto:dirk.utterback@xxxxxxxxx]
Sent: Sunday, December 28, 2008 9:40 PM
To: Venefax
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Windows SMP
It seems something wrong. It is hard to achieve linear performance with more processors, but it should be at least something "normal". Another choice might be halsign turbogate drivers. I used it half a year ago, and it is stable and performance is really nice.
2008年12月27日 Venefax <venefax@xxxxxxxxx>
I think that we need to tackle the absurd loss of performance that any Windows HVM incurs with more than one processor. I have measured it and it is amazing. I have an application that opens 15 independent network clients, and with one single processor and the Standard PC Hal, it takes a little over a minute to load the 15 clients and also to register with the SIP provider. If I leave that unchanged, I mean "ceteris paribus" , and only change the HAL to ACPI and add 8 processors, then the same operation takes over 10 minutes. Hello!!! I am using the GPLVL drivers from James Harper. Right now I am about to test the MPS –Non-ACPI HAL, but the driver still create a BSOD. Maybe the problem is only ACPI, and not MPS, who knows. In any case, what can we do so any Windows virtual machine can achieve a "normal" performance, I mean, a linear performance when using more processors and not this declining curve that can kill any host.
Federico
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
_______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Xen-devel] Windows SMP , Dirk Utterback |
|---|---|
| Next by Date: | RE: [Xen-devel] Windows SMP , James Harper |
| Previous by Thread: | Re: [Xen-devel] Windows SMP , Dirk Utterback |
| Next by Thread: | RE: [Xen-devel] Windows SMP , James Harper |
| Indexes: | [Date] [Thread] [Top] [All Lists] |