[Libguestfs] [PATCH v2 0/7] tests/qemu: Add program for tracing and analyzing boot times.

Kashyap Chamarthy kchamart at redhat.com
Tue Mar 22 08:22:49 UTC 2016

On Mon, Mar 21, 2016 at 03:21:37PM +0000, Richard W.M. Jones wrote:
> On Mon, Mar 21, 2016 at 04:01:29PM +0100, Kashyap Chamarthy wrote:
> >     https://kashyapc.fedorapeople.org/virt/stdouts/faster-supermin-custom-qemu-appliance-boot-analysis.txt
> That's good.  Next one to try is this Ceph build:
> http://koji.fedoraproject.org/koji/taskinfo?taskID=13411776
> I removed the initialization of Cycles::init (RHBZ#1319483), so it
> should show some improvements in the qemu:feature-detect and qemu
> phases.

Re-ran it with it this morning, result[1].  As you noted on IRC last
evening, indeed, I don't see any measurable improvement in appliance
launch speed.

    Without the Ceph build : 2.447361s
    With Ceph build        : 2.459696s

I ran the appliance a few times before posting these results.  Also, the
test machine where I performed this doesn't have an SSD.

[1] https://kashyapc.fedorapeople.org/virt/stdouts/2-faster-supermin-custom-qemu-appliance-boot-analysis.txt


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