Hi Mark, thanks for following up. I'm now pretty convinced I have issues
with my network, it's not Ceph related. My cursory iperf tests between
pairs of hosts were looking fine but with multiple clients I'm seeing
really high tcp retransmissions.
On Mon, Aug 8, 2016 at 1:07 PM, Mark Nelson wrote:
Hi David,
We haven't done any direct giant to jewel comparisons, but I wouldn't
expect a drop that big, even for cached tests. How long are you running
the test for, and how large are the IOs? Did you upgrade anything else
at the same time Ceph was updated?
Mark
On 08/06/2016 03:38 PM, Da
I created a new pool that only contains OSDs on a single node. The Rados
bench gives me the speed I'd expect (1GB/s...all coming out of cache)
I then created a pool that contains OSDs from 2 nodes. Now the strange part
is, if I run the Rados bench from either of those nodes, I get the speed
I'd ex
Hi All
I've just installed Jewel 10.2.2 on hardware that has previously been
running Giant. Rados Bench with the default rand and seq tests is giving me
approx 40% of the throughput I used to achieve. On Giant I would get
~1000MB/s (so probably limited by the 10GbE interface), now I'm getting 300
