On Mar 6, 2013, at 5:57 PM, Noah Watkins <jayhawk@xxxxxxxxxxx> wrote: > The MDS process in my cluster is running at 100% CPU. In fact I thought the cluster came down, but rather an ls was taking a minute. There aren't any clients active. I've left the process running in case there is any probing you'd like to do on it: > > virt res cpu > 4629m 88m 5260 S 92 1.1 113:32.79 ceph-mds > > Thanks, > Noah > This is a ceph-mds child thread under strace. The only thread that appears to be doing anything. root@issdm-44:/home/hadoop/hadoop-common# strace -p 3372 Process 3372 attached - interrupt to quit read(1649, "7f0203235000-7f0203236000 ---p 0"..., 8191) = 4050 read(1649, "7f0205053000-7f0205054000 ---p 0"..., 8191) = 4050 read(1649, "7f0206e71000-7f0206e72000 ---p 0"..., 8191) = 4050 read(1649, "7f0214144000-7f0214244000 rw-p 0"..., 8191) = 4020 read(1649, "7f0215f62000-7f0216062000 rw-p 0"..., 8191) = 4020 read(1649, "7f0217d80000-7f0217e80000 rw-p 0"..., 8191) = 4020 read(1649, "7f0219b9e000-7f0219c9e000 rw-p 0"..., 8191) = 4020 ... That file looks to be: ceph-mds 3337 root 1649r REG 0,3 0 266903 /proc/3337/maps (3337 is the parent process).-- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
