 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] RFC/PATCH: hdparm tunable IDE write cache for HVM
| To: | "Rik van Riel" <riel@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] RFC/PATCH: hdparm tunable IDE write cache for HVM |
| From: | "Christian Limpach" <christian.limpach@xxxxxxxxx> |
| Date: | Fri, 11 Aug 2006 12:07:43 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Fri, 11 Aug 2006 04:08:05 -0700 |
| Domainkey-signature: | a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=tBWcYyv59o66Y9fEp6vDqCrDi+VGj+g61ZOoQ/2nz/04tBVNsisET/56GvmMh/CceNaOVSmvjoV10GGD9D5HM9YInN37qIjT4gACvSB/SW/kAcbGxHBUsSVOSPkC/ZPg36zQqZI+FfO3O/psr3qXMBh8uFoIYnyU+PgNrRapy5c= |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxx |
| In-reply-to: | <44DC23AB.7010300@xxxxxxxxxx> |
| 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/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| References: | <44DC23AB.7010300@xxxxxxxxxx> |
| Reply-to: | Christian.Limpach@xxxxxxxxxxxx |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
On 8/11/06, Rik van Riel <riel@xxxxxxxxxx> wrote: qemu 0.8.2 has a flush callback to the storage backends, so now it is possible to implement hdparm tunable IDE write cache enable/disable for guest domains, allowing people to pick speed or data consistency on a case by case basis. As an added benefit, really large LBA48 IOs will now no longer be broken up into smaller IOs on the host side. What do you think? Looks good, are you confident that you have identified all the places where a flush is needed? Doesn't qemu do flushes in the first place and wouldn't it then have the same issues? christian _______________________________________________ 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] [PATCH][TOOLS] allow the selection of blktap and firmware thru config files, Christian Limpach |
|---|---|
| Next by Date: | [Xen-devel] Testing status of HVM (Intel VT) on 64bit XEN unstable c/s 11049, Ed Smith |
| Previous by Thread: | [Xen-devel] RFC/PATCH: hdparm tunable IDE write cache for HVM, Rik van Riel |
| Next by Thread: | Re: [Xen-devel] RFC/PATCH: hdparm tunable IDE write cache for HVM, Rik van Riel |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
