thank you Igor! On Fri, Jun 25, 2021 at 4:45 PM Igor Fedotov <ifedotov@xxxxxxx> wrote: > > Hi Kefu and Adam, > > curious whether we have reliable enough set of numbers on how spatially > efficient btree allocator is? I recall some Adam's comment in the PR > showing 2x saving in BTree allocator vs. AVL on. no, probably not reliable or enough. could you shed some light on how i can get some reliable numbers? shall i run some load on an osd and check the memory consumption of the allocator? if yes, do we have any (recommended) benchmark for profiling the disk allocators? > > But the data set there seems to be relatively small - total consumed RAM > is just a few MBs. Anything else available? not so far. > > I recall Adam promised to run more vast testing at perf meeting.... i see. will wait for his update then if we don't have a standardized test yet. > > > Thanks, > > Igor > > > > On 6/25/2021 11:35 AM, Kefu Chai wrote: > > hi Adam, > > > > while looking at Hybrid Allocator [0] and the newly introduced Btree > > Allocator [1], i am wondering if we still need the bitmap allocator to > > cap the memory usage due to the large overhead of AVL allocator? > > because btree is much more spatially efficient than AVL tree. > > > > cheers > > > > --- > > [0] https://github.com/ceph/ceph/pull/33365 > > [1] https://github.com/ceph/ceph/pull/41828 > > _______________________________________________ > > Dev mailing list -- dev@xxxxxxx > > To unsubscribe send an email to dev-leave@xxxxxxx > > > _______________________________________________ Dev mailing list -- dev@xxxxxxx To unsubscribe send an email to dev-leave@xxxxxxx
