[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] VM start time slows with large number of VMs
On Thu, Sep 06, 2007 at 06:31:28PM +0100, Keir Fraser wrote: > On 6/9/07 18:29, "Mats Petersson" <mats@xxxxxxxxxxxxxxxxx> wrote: > > >> If I save the output from the xenstore-ls, the file has 61,318 lines > >> with information from all the VMs run yesterday. I conclude that > >> xenstore does not get cleared on startup. Is there a way to clear it? > > > > > > It is perfectly fine to remove the xenstore.tdb [filename from > > memory] in /var/xen/lib [again, from memory]. Unless of course you > > actually NEED some of your old Xenstrore entries for soemthing, but > > in general, they are fine to be removed completely. > > Yes, actually this would be something perhaps we should do from the xend > startup script, if we can determine that xenstored is not running. It'd be > nice to get a patch. Or just put the database on /dev/shm so its in RAM - that way it just goes away whenever you reboot & you reduce the disk I/O overhead xenstored has. IIRC last time I tested it doubled xenstored performance using /dev/shm Dan -- |=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=| |=- Perl modules: http://search.cpan.org/~danberr/ -=| |=- Projects: http://freshmeat.net/~danielpb/ -=| |=- GnuPG: 7D3B9505 F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 -=| _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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