Can confirm that disabling power saving helps. I've also seen latency
improvements with sysctl -w net.ipv4.tcp_low_latency=1
Another thing that sometimes helps is disabling the write cache of
your SSDs (hdparm -W 0), depends on the disk model, though.
Paul
--
Paul Emmerich
Looking for help wit
Paul,
Absolutely, I said I was looking at those settings and most didn't make
any sense to me in a production environment (we've been running ceph
since Dumpling).
However we only have 1 cluster on Bluestore and I wanted to get some
opinions if anything other than the defaults in ceph.conf or sys
Please don't run this config in production.
Disabling checksumming is a bad idea, disabling authentication is also
pretty bad.
There are also a few options in there that no longer exist (osd op
threads) or are no longer relevant (max open files), in general, you
should not blindly copy config file
On 11/28/19 12:56 PM, David Majchrzak, ODERLAND Webbhotell AB wrote:
> Hi!
>
> We've deployed a new flash only ceph cluster running Nautilus and I'm
> currently looking at any tunables we should set to get the most out of
> our NVMe SSDs.
>
> I've been looking a bit at the options from the blo
Hi!
We've deployed a new flash only ceph cluster running Nautilus and I'm
currently looking at any tunables we should set to get the most out of
our NVMe SSDs.
I've been looking a bit at the options from the blog post here:
https://ceph.io/community/bluestore-default-vs-tuned-performance-compari
