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://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > > > -- > Have a nice day, > Timofey. > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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