This is xfs metadata sync process...when it is waking up and there are lot of data to sync it will throttle all the process accessing the drive...There are some xfs settings to control the behavior, but you can't stop that Sent from my iPhone >> On Dec 1, 2015, at 8:26 AM, flisky <yinjifeng@xxxxxxxxxxx> wrote: >> >> On 2014年11月11日 12:23, duan.xufeng@xxxxxxxxxx wrote: >> >> -------------------------------------------------------- ZTE Information >> Security Notice: The information contained in this mail (and any >> attachment transmitted herewith) is privileged and confidential and is >> intended for the exclusive use of the addressee(s). If you are not an >> intended recipient, any disclosure, reproduction, distribution or other >> dissemination or use of the information contained is strictly >> prohibited. If you have received this mail in error, please delete it >> and notify us immediately. >> >> >> >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > I'm facing the exactly same problem, and my situation is much worst. > > BTT gives me this - > > Q2Q MIN AVG MAX N > --------------- ------------- ------------- ------------- ----------- > ceph-osd 0.000001243 0.009448228 7.065125958 12643 > kworker 0.000001491 0.479659256 30.080631593 226 > pid002853761 0.000668293 20.053390778 30.080227966 3 > xfsaild 0.000001097 0.008947398 30.073285005 10879 > > D2C MIN AVG MAX N > --------------- ------------- ------------- ------------- ----------- > ceph-osd 0.000036810 0.014268501 1.626915131 12642 > kworker 0.000044483 0.005548645 0.653310778 203 > pid002853761 0.000156094 0.001594357 0.005841911 4 > xfsaild 0.000307363 0.190863515 1.321992802 9849 > > The disk util is almost 100%, while avgrq-sz and avgqu-sz is very low, which makes me very confused. > > Could any one give me some hint on this? Thanks! > > _______________________________________________ > 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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