Am 09.09.2014 um 12:33 schrieb Paolo Bonzini: > Il 07/09/2014 20:04, Reindl Harald ha scritto: >> on http://comments.gmane.org/gmane.linux.redhat.fedora.devel/199113 >> *you* complain about systemd-readahead - guess what - if a virtual >> machine is detected it is skipped > > And why is it a good idea to skip it on a virtual machine?
guess what happens if you fire up 20 guests at the same time prefetch a lot of data from a shared storage - if the data is not cached at the host you overload disks on the other hand long running virtualization hosts with plenty memory and shared memory pages you get the whole benefit anyways without support from the guest
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