On 1/10/18 1:53 PM, Mike Larkin wrote:
On Wed, Jan 10, 2018 at 03:51:19PM +0000, Mark Carroll wrote:
Since my hosting provider https://www.bytemark.co.uk/cloud-hosting/
patched for Meltdown last weekend I'm seeing significant performance
issues with an OpenBSD virtual instance there. It seems okay after a
fresh reboot but then progressively returns to being very slow: for
example "sleep 1" may take four seconds, then five, six, seven, then
rather more. Curiously it does tend to be an integral multiplier.
I wondered, is anybody else seeing significant performance problems with
OpenBSD (or other BSDs) virtual instances since Meltdown patching? Is
there anything to tweak at my end or am I reliant on the provider?
-- Mark
There are a ton of threads talking about this issue, and it's not meltdown
specific. Please search the archives.
-ml
Really? I just searched the last two years of list email for subject
lines having substrings "virt", "kvm", "perf", and "slow", and didn't
see anything on this specific issue. Can you provide a link, or the
name of the thread, or some keywords?
Also, Mark, could you say some more about the issue. For instance, how
long after a reboot does it take until you start to notice the issue,
and how quickly does it get worse?
Thanks,
Kent
