[ceph-users] Possible improvements for a slow write speed (excluding independent SSD journals)

2015-04-23 Thread Anthony Levesque
To update you on the current test in our lab: 1.We tested the Samsung OSD in Recovery mode and the speed was able to maxout 2x 10GbE port(transferring data at 2200+ MB/s during recovery). So for normal write operation without O_DSYNC writes Samsung drives seem ok. 2.We then tested a couple of d

Re: [ceph-users] Possible improvements for a slow write speed (excluding independent SSD journals)

2015-04-24 Thread Anthony Levesque
015, at 9:05 PM, Christian Balzer wrote: > > > Hello, > > On Thu, 23 Apr 2015 18:40:38 -0400 Anthony Levesque wrote: > >> To update you on the current test in our lab: >> >> 1.We tested the Samsung OSD in Recovery mode and the speed was able to >> ma

Re: [ceph-users] Possible improvements for a slow write speed (excluding independent SSD journals)

2015-04-29 Thread Anthony Levesque
gt; I'm able to reach around 2-25000iops with 4k block with s3500 (with >> o_dsync) (so yes, around 80-100MB/S). >> >> I'l bench new s3610 soon to compare. >> >> >> - Mail original - >> De: "Anthony Levesque" >>

Re: [ceph-users] Possible improvements for a slow write speed (excluding independent SSD journals)

2015-04-30 Thread Anthony Levesque
you guys posted here. --- Anthony Lévesque > On Apr 29, 2015, at 11:27 PM, Christian Balzer wrote: > > > > Hello, > > On Wed, 29 Apr 2015 15:01:49 -0400 Anthony Levesque wrote: > >> We redid the test with 4MB Block Size (using the same command as before >>

Re: [ceph-users] Possible improvements for a slow write speed (excluding independent SSD journals)

2015-05-01 Thread Anthony Levesque
r 2015 18:01:44 -0400 Anthony Levesque wrote: > >> Im planning to setup 4-6 POC in the next 2 week to test various >> scenarios here. >> >> Im checking to get POC with s3610, s3710, p3500(seem to be knew. I know >> the lifespam is lower) and maybe P3700 >>

[ceph-users] Replicas handling

2015-05-11 Thread Anthony Levesque
Greetings, We have been testing a full SSD Ceph cluster for a few weeks now and still testing. One of the outcome(We will post a full report on our test soon but for now this email will only be for replicas) is that as soon as you put more than 1 copy of the cluster, it kills the performance b