Hi everyone, to make the long story short - i 've spent 6 weeks trting really hard, read tons of doc pages on the internet (get lots of knowledge to be honest)
so i can get very good results , however unfortunetely i cant get from iscsi+zfs good results about sequential reading. the cominents server with esxi: proliant 180 G6, RAM 64GB NIC = BCM95719A (4 ports) esxi 5.5 u2 server directly (without switches) connects to server with zfs zfs server: proliant 180 G6, RAM 82GB LSI 9207 HBA NIC = BCM95719A (4 ports) * OpenIndiana Hipster 2016.04 Text Install USB (32/64-bit x86), 731M sha256 i use round robin in esxi. the number of iops to switch to another port nic = 1 iops. my zfs pool is about 6 x hdd seagate ST2000DM002 ( stripe of 3 mirrors) zil = 120 GB kingston zvol volblocksize = 4k ashift=12 for seagates ashift=13 for kingston primary cache=metadata secondary cache = metadata so i don't use arc for testing purposes i want to get good results without arc, later i will add it to the pool i installl windows server 2012 + iometer testing pattern = sequential read bs=512k number of queues=5-8 I expect to get 250-270 MB\s (at least 150 MB\s for christ sake) about sequential reading, however i get just only 60 MB\s I want to underline that i get very good results in seqeutnial writing seq write 512k(iometer align=4k) , 8 threds ,tghroughput =226МБ\с lat=17.7 also i get good result about randon reading rran read 4k(, 8 threads, iops= 614 lat= 13.0 so the system kind of work. it's just about sequenatial reading problem. i'm puzzled and fristrated, i want use zfs on iscsi but can't , i have to switch to iscsi + esxt3 . What can you suggest ? is anyone struggle with bad reading ? i ' ve searched a lot about it on the internet. - i can't find the pattern. Sincerely yours Alex K. _______________________________________________ openindiana-discuss mailing list [email protected] http://openindiana.org/mailman/listinfo/openindiana-discuss
