[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] open/stat64 syscalls run faster on Xen VM than standard Linux
Petersson, Mats wrote: -----Original Message-----From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Anthony LiguoriSent: 28 November 2005 14:39 To: xuehai zhang Cc: Xen Mailing ListSubject: Re: [Xen-devel] open/stat64 syscalls run faster on Xen VM than standard LinuxThis may just be the difference between having the extra level of block caching from using a loop back device.Try running the same benchmark on a domain that uses an actual partition. While the syscalls may appear to be faster, I imagine it's because the cost of pulling in a block has already been payed so the overall workload is unaffected.And this would be the same as running standard linux with the loopback file-system mounted and chroot to the local file-system, or would that be different? [I'm asking because I don't actually understand enough about how it works to know what difference it makes, and I would like to know, because at some point I'll probably need to know this.] Mats, I will do this experiments and see what is happening (as I promised in the popen threads). Thanks. Xuehai _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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