Can I just check if you are using the direct RBD backend or FileIO backend? And what are you using to test the performance? Thanks, Nick From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of maoqi1982 it works. >Try turning off the HW Accelerated features in VMware (VAAI). From memory I>think it's the accelerated Init one which causes the problem.>>> -----Original Message----->> From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of>> Timofey Titovets>> Sent: 23 June 2015 06:36>> To: maoqi1982>> Cc: ceph-users@xxxxxxxxxxxxxx>> Subject: Re: ceph0.72 tgt wmware performance very bad>> >> Which backend you use in TGT for rbd?>> >> 2015-06-23 5:44 GMT+03:00 maoqi1982 <maoqi1982@xxxxxxx>:>> > Hi list:>> > my cluster include 4 server ,12 osd(4 osd/server), 1 mon(1 server),>> > 1Gbps link, ceph version is 0.72 , the cluster status is ok, client is>> > vmware vcenter.>> > use rbd as tgt backend,expose 2TB LUN via iscsi to vmware,the>> > performance is very bad. the bw just 10kB/s.>> > but when use windows7 as client via iscsi the performance is ok>> > nearly 100MB/s why the performance is so bad when client is vmware?>> >>> >>> >>> >>> > _______________________________________________>> > ceph-users mailing list>> > ceph-users@xxxxxxxxxxxxxx>> > http://xo4t.mj.am/link/xo4t/jtgnsht/1/xEuZICBHzgScCt1ZeV9BwA/aHR0cDovL2xpc3RzLmNlcGguY29tL2xpc3RpbmZvLmNnaS9jZXBoLXVzZXJzLWNlcGguY29t>> >>> >> >> >> -->> Have a nice day,>> Timofey.>> _______________________________________________>> ceph-users mailing list>> ceph-users@xxxxxxxxxxxxxx>> http://xo4t.mj.am/link/xo4t/jtgnsht/2/U-AA-VQ9df5g4Sj_3ONIkA/aHR0cDovL2xpc3RzLmNlcGguY29tL2xpc3RpbmZvLmNnaS9jZXBoLXVzZXJzLWNlcGguY29t>>>> |
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