> Are you willing to share your hardware/network configuration? We are > planning a cluster > similiar to yours. Sure, we are using those : https://www.ovh.com/fr/serveurs_dedies/details-servers.xml?range=ENT&id=2016-SP-64 The last variant with 3 SAS Drives + a Caching SSD with hard RAID. > > I could send you the bonnie++ results from those two tests tomorrow if you want, > > kept that at work. > > Yes, this could be interested. If possible, could you please share On 3.7.6 with 10ms of ping between the nodes : Version 1.97 ------Sequential Output------ --Sequential Input-- -Random-Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block----Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP ha1 4G 998 90 34441 3 40618 3 4102 95 2039179 25 2934 24 Latency 12031us 723ms 3632ms 6021us 333us 20238us Version 1.97 ------Sequential Create------ --------Random Create-------- ha1 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 1000 5499 5 849370 99 2402 3 26968 26 954899 99 1237 2 Latency 53555ms 6838uqs 6272ms 1326ms 338us 14823ms On 3.7.11 with nodes in the same town : Version 1.97 ------Sequential Output------ --Sequential Input-- -Random- Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP ha1 4G 1129 97 36847 5 37363 1 +++++ +++ +++++ +++ +++++ +++ Latency 9639us 1607ms 3376ms 1239us 442us 1675us Version 1.97 ------Sequential Create------ --------Random Create-------- ha1 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ Latency 573us 274us 441us 534us 16us 1145us As you can see, much better results ! The latency isn't even in the same unit. > some benchmark for the > same VM running from gluster and running directly from localstorage ? > Sorry, the way I installed those nodes won't allow me to test that for now. When 3.7.12 is out, if it works as well as I hope, I'm planning to re-install most of it so I'll probably do a test like that, I'll share the result if you are still interested then. > What i've read is that with native gluster connector for QEMU > performance are almost identical > to the plain qemu (this looks pretty strange to me) I doubt that, it works well but I do see a difference when I rsync stuff in the VMs. Not a huge deal though, the bandwith isn't of great interest to me, the latency is. -- Kevin Lemonnier PGP Fingerprint : 89A5 2283 04A0 E6E9 0111
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