On Mon, Oct 15, 2018 at 9:54 PM Dietmar Rieder <dietmar.rie...@i-med.ac.at> wrote: > > On 10/15/18 1:17 PM, jes...@krogh.cc wrote: > >> On 10/15/18 12:41 PM, Dietmar Rieder wrote: > >>> No big difference here. > >>> all CentOS 7.5 official kernel 3.10.0-862.11.6.el7.x86_64 > >> > >> ...forgot to mention: all is luminous ceph-12.2.7 > > > > Thanks for your time in testing, this is very valueable to me in the > > debugging. 2 questions: > > > > Did you "sleep 900" in-between the execution? > > Are you using the kernel client or the fuse client? > > > > If I run them "right after each other" .. then I get the same behaviour. > > > > Hi, as I stated I'm using the kernel client, and yes I did the sleep 900 > between the two runs. > > ~Dietmar > Sorry for the delay
I suspect that mds asked client to trim its cache. Please run following commands on an idle client. time for i in $(seq 0 3); do echo "dd if=test.$i.0 of=/dev/null bs=1M"; done | parallel -j 4 echo module ceph +p > /sys/kernel/debug/dynamic_debug/control; sleep 900; echo module ceph -p > /sys/kernel/debug/dynamic_debug/control; time for i in $(seq 0 3); do echo "dd if=test.$i.0 of=/dev/null bs=1M"; done | parallel -j 4 If you can reproduce this issue. please send kernel log to us. Regards Yan, Zheng > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
