arameters is an exercise in futility? ^_-
Christian
> Thanks & Regards
> Somnath
>
> -Original Message-
> From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of
> Brian :: Sent: Tuesday, May 24, 2016 1:37 AM
> To: ceph-users@lists.ceph.com
> Subje
From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Brian
::
Sent: Tuesday, May 24, 2016 1:37 AM
To: ceph-users@lists.ceph.com
Subject: Re: [ceph-users] NVRAM cards as OSD journals
Hello List
To confirm what Christian has said. We have been playing with a 3 node
4 SSD (3610)
Hello List
To confirm what Christian has said. We have been playing with a 3 node
4 SSD (3610) per node cluster. Putting the journals on the OSD SSDs we
were getting 770MB /s sustained with large sequential writes, and 35
MB/s and about 9200 IOPS with small random writes. Putting an NVME as
journa
Hello,
On Fri, 20 May 2016 15:52:45 + EP Komarla wrote:
> Hi,
>
> I am contemplating using a NVRAM card for OSD journals in place of SSD
> drives in our ceph cluster.
>
> Configuration:
>
> * 4 Ceph servers
>
> * Each server has 24 OSDs (each OSD is a 1TB SAS drive)
>
>
> -Original Message-
> From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of
> Heath Albritton
> Sent: 23 May 2016 01:24
> To: ceph-users@lists.ceph.com
> Subject: Re: [ceph-users] NVRAM cards as OSD journals
>
> I'm contemplating the s
I'm contemplating the same thing as well. Or rather, I'm actually doing some
testing. I have a Netlist EV3 and have seen ~6GB/s read and write for any
block size larger than 16k or so, IIRC.
Sebastien Han has a blog page with journal benchmarks, I've added the specifics
there.
This week, I e
I'm contemplating the same thing as well. Or rather, I'm actually doing some
testing. I have a Netlist EV3 and have seen ~6GB/s read and write for any
block size larger than 16k or so, IIRC.
Sebastien Han has a blog page with journal benchmarks, I've added the specifics
there.
This week, I e
I am using Intel P3700DC 400G cards in a similar configuration (two per host) -
perhaps you could look at cards of that capacity to meet your needs.
I would suggest having such small journals would mean you will be constantly
blocking on journal flushes which will impact write performance and l
