Let's make a patch that creates actual Ceph parameters for these things so that we don't have to edit the source code in the future. Allen Samuels SanDisk |a Western Digital brand 2880 Junction Avenue, San Jose, CA 95134 T: +1 408 801 7030| M: +1 408 780 6416 allen.samuels@xxxxxxxxxxx > -----Original Message----- > From: ceph-devel-owner@xxxxxxxxxxxxxxx [mailto:ceph-devel- > owner@xxxxxxxxxxxxxxx] On Behalf Of Manavalan Krishnan > Sent: Wednesday, June 08, 2016 3:10 PM > To: Mark Nelson <mnelson@xxxxxxxxxx>; Ceph Development <ceph- > devel@xxxxxxxxxxxxxxx> > Subject: RocksDB tuning > > Hi Mark > > Here are the tunings that we used to avoid the IOPs choppiness caused by > rocksdb compaction. > > We need to add the following options in src/kv/RocksDBStore.cc before > rocksdb::DB::Open in RocksDBStore::do_open opt.IncreaseParallelism(16); > opt.OptimizeLevelStyleCompaction(512 * 1024 * 1024); > > > > Thanks > Mana > > > > > > PLEASE NOTE: The information contained in this electronic mail message is > intended only for the use of the designated recipient(s) named above. If the > reader of this message is not the intended recipient, you are hereby notified > that you have received this message in error and that any review, > dissemination, distribution, or copying of this message is strictly prohibited. If > you have received this communication in error, please notify the sender by > telephone or e-mail (as shown above) immediately and destroy any and all > copies of this message in your possession (whether hard copies or > electronically stored copies). > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the > body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at > http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
