On Thu, Aug 19, 2021 at 12:40 AM Marc wrote:
>
> >
> > https://docs.google.com/spreadsheets/d/1AXj9h0yDc2ztFWuptqcTrNU2Ui3wMyAn
> > 6QUft3CPdcc/edit?usp=sharing
> >
> >
> > The gist of it is that on the read path, crimson+cyanstore is
> > significantly more efficient than crimson+alienstore and an
Hi Igor,
Thank you for answering.
I understand what you are saying, but I still wonder why the crimson-osd
(alienstore) has poor performance.
I tested the performance on SeaStore also, but still ObjectStores which use
crimson-osd (alienstore, seastore) have extremely poor performance.
Do you have
Can you run it with 4k block size , 1 thread. ( Default is 4M and 16
threads)
$ rados bench -p rbd 10 write -b 4096 -t 1 --no-cleanup
On 19/08/2021 04:22, 신희원 / 학생 / 컴퓨터공학부 wrote:
Hi,
I measured the performance of ceph-osd and crimson-osd with same single
core affinity.
I checked IOPS, Lat
Hi Shin,
a side note - you disk choice might be inappropriate for Ceph - AFAIK
this is a consumer model which apparently lacks power loss protection.
This causes dramatic performance drop when each write request is
followed by fsync one. And this is the mode RocksDB/BlueFS work in.
Hence ex
>
> https://docs.google.com/spreadsheets/d/1AXj9h0yDc2ztFWuptqcTrNU2Ui3wMyAn
> 6QUft3CPdcc/edit?usp=sharing
>
>
> The gist of it is that on the read path, crimson+cyanstore is
> significantly more efficient than crimson+alienstore and any classic
> setup. We are slower in terms of absolute perf
Hi Mark.
Thanks for answering.
I tested the performance on Samsung NVMe SSD 960 PRO 512GB, 2-way
E5-2650(2.2GHz, 12-core) CPU , not HDD...
Is it a problem that I check the performance on ceph that is deployed by
'vstart'..?
Please tell me how to deploy ceph to achieve similar results..!
Thank you
On 8/18/21 9:22 PM, 신희원 / 학생 / 컴퓨터공학부 wrote:
Hi,
I measured the performance of ceph-osd and crimson-osd with same single
core affinity.
I checked IOPS, Latency by rados-bench write , and crimson-osd has lower
performance than ceph-osd about 3 times. (ceph-osd(BlueStore): 228 IOPS,
crimson-osd(Al
