Date: Thu, 29 Aug 2013 11:13:29 +0100 From: Karl Pielorz <kpielorz_lst@tdx.co.uk> To: freebsd-xen@freebsd.org Subject: Snapshots with 'disk and memory' take a very long time? / calcru: runtime went backwards Message-ID: <1958E3417C6A3D217AEC0451@Mail-PC.tdx.co.uk>
next in thread | raw e-mail | index | archive | help
Now we've got the ability to take snapshots with 'memory' - they seem to take a very long time... Setup is FreeBSD 9.2-RC3 amd64 XENHVM system running under Xen Server 6.2, on a reasonably fast machine (all SSD storage). In XenCenter a 'disk snapshot' completes in 3 seconds, however selecting 'Snapshot the virtual machine's disks and memory' takes over a minute? We're new to Xen - so I've no idea if that's a good, or bad time? - The guest host goes comatose while it's happening as well. Also once the snapshot is complete the console starts filling with lots of: " calcru: runtime went backwards from 752 usec to 717 usec for pid X " (Lots of values for 'from' and 'to' and lots, i.e. all PID's). Restarting the VM fixes this. Any pointers? - aside from switching the kernel to XENHVM, installing 'xe-guest-utilities' and 'removing' the CDROM drive from the image - it's all stock settings. Thanks, -Karl
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?1958E3417C6A3D217AEC0451>