Re: [ceph-users] Ceph and low latency kernel

2014-05-26 Thread Andrey Korolyov
On Mon, May 26, 2014 at 10:53 AM, Stefan Priebe - Profihost AG wrote: > Hi, > > sorry it was a bit poorly defined. > > I'm talking about thinks like this: > http://lwn.net/Articles/551179/ > > Stefan > Not sure if Ceph can have any advantage of it, as for common Ceph operations looks like they ar

Re: [ceph-users] Ceph and low latency kernel

2014-05-25 Thread Stefan Priebe - Profihost AG
Hi, sorry it was a bit poorly defined. I'm talking about thinks like this: http://lwn.net/Articles/551179/ Stefan Am 25.05.2014 11:11, schrieb Andrey Korolyov: > Hi, > > which one you are talking about? -rt patchset has absolutely no > difference for Ceph, though very specific workload (which

Re: [ceph-users] Ceph and low latency kernel

2014-05-25 Thread Andrey Korolyov
Hi, which one you are talking about? -rt patchset has absolutely no difference for Ceph, though very specific workload (which I was unable to imagine at a time) can benefit of it a little. Windriver variant means much more, because it rt`ing virtualized envs - in combination with storage nodes you

Re: [ceph-users] Ceph and low latency kernel

2014-05-25 Thread Dan Van Der Ster
I very briefly tried kernel-rt from RH MRG, and it didn't make any noticeable difference. Though I didn't spend any time tuning things. Cheers, Dan On May 25, 2014 11:04 AM, Stefan Priebe - Profihost AG wrote: Hi, has anybody ever tried to use a low latency kernel for ceph? Does it make any d

[ceph-users] Ceph and low latency kernel

2014-05-25 Thread Stefan Priebe - Profihost AG
Hi, has anybody ever tried to use a low latency kernel for ceph? Does it make any differences? Greets, Stefan ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com