Re: Cache Tiering Investigation and Potential Patch

2015-12-01 Thread Mark Nelson
k Nelson' <mnel...@redhat.com> Subject: RE: Cache Tiering Investigation and Potential Patch On Wed, 25 Nov 2015, Nick Fisk wrote: Yes I think that should definitely be an improvement. I can't quite get my head around how it will perform in instances where you miss 1 hitset but all others are a hit

Re: Cache Tiering Investigation and Potential Patch

2015-11-25 Thread Sage Weil
On Wed, 25 Nov 2015, Nick Fisk wrote: > Presentation from the performance meeting. > > I seem to be unable to post to Ceph-devel, so can someone please repost > there if useful. Copying ceph-devel. The problem is just that your email is HTML-formatted. If you send it in plaintext vger won't

RE: Cache Tiering Investigation and Potential Patch

2015-11-25 Thread Sage Weil
t;; ceph-devel@vger.kernel.org; > > 'Mark Nelson' <mnel...@redhat.com> > > Subject: Re: Cache Tiering Investigation and Potential Patch > > > > On Wed, 25 Nov 2015, Nick Fisk wrote: > > > Presentation from the performance meeting. > > > >

RE: Cache Tiering Investigation and Potential Patch

2015-11-25 Thread Sage Weil
On Wed, 25 Nov 2015, Nick Fisk wrote: > > > Yes I think that should definitely be an improvement. I can't quite > > > get my head around how it will perform in instances where you miss 1 > > > hitset but all others are a hit. Like this: > > > > > > H H H M H H H H H H H H > > > > > > And recency