Re: [libvirt] speeding up qemu core dumps

On 08/03/2011 08:37 AM, Jim Fehlig wrote: > http://lists.nongnu.org/archive/html/qemu-devel/2011-02/msg01156.html > > I thought there were more discussions on the topic but can only find the > above thread ATM. > > Do folks here have objections to increasing the migration speed prior to > core dump? If not, any suggestions for a value? I set the migration > speed to 1G in doCoreDump() prior to calling qemuMigrationToFile() with > following improvement dumping a 4G guest Why any limit at all? When dumping to file rather than network, I can't think of any justification for a default limit when targetting a local drive (a particular installation may have a reasonable limit, especially if the file involved happens to use a network - think NFS). It seems like it would make sense to override the qemu defaults and go with unlimited speed for faster dump and save operations.