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[kolla][nova][neutron] Access to VMs is slow when running on a remote compute host


Ciao Jeremy,
dmesg reports no error on the guest.
syslog and auth.log look clean as well.

/G

On Mon, 15 Jul 2019 at 18:30, Jeremy Stanley <fungi at yuggoth.org> wrote:

> On 2019-07-15 16:29:47 +0200 (+0200), Giuseppe Sannino wrote:
> [...]
> > Once logged in the VM is not too slow. CLI doesn't get stuck or similar.
> > One thing worthwhile to mention, it seems like the writing throughput on
> > the disk is a bit slow: 67MB/s  wrt around 318MB/s of another VM running
> on
> > a "datacenter" Openstack installation.
> [...]
>
> Have you checked dmesg in the guest instance to see if there is any
> I/O problem reported by the kernel? The login process will block on
> updating /var/log/wtmp or similar, so if writes to whatever backing
> store that lives on are delayed, that can explain the symptom.
> --
> Jeremy Stanley
>
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