From: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
To: qemu-devel <qemu-devel@nongnu.org>
Subject: [Qemu-devel] slow migration speed / strange memory usage
Date: Mon, 29 Oct 2012 11:44:37 +0100 [thread overview]
Message-ID: <508E5E15.9060302@profihost.ag> (raw)
Hello list,
i'm running kvm 1.2 on vanilla 3.6.3 kernel.
I'm trying to understand the memory usage and the migration speed.
I've a VM which does nothing else than running OpenSSH and a cron job
every minute to write a small json file.
When the VM is freshly started Host shows 300MB memory usage and
migration speed is around 400MB/s.
After time the memory usage increases in up to 3.7GB but in VM it stays
incl. cache and buffers around 350MB.
The migration speed is then around 25MB/s.
How can this be? Is this expected? Disk cache is set to default (no cache).
Greets,
Stefan
reply other threads:[~2012-10-29 10:44 UTC|newest]
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