On Wed, Sep 19, 2012 at 1:48 PM, Sage Weil <sage@xxxxxxxxxxx> wrote: > On Wed, 19 Sep 2012, Tren Blackburn wrote: >> Hey List; >> >> I'm in the process of rsyncing in about 7TB of data to Ceph across >> approximately 58565475 files (okay, so I guess that's not so >> approximate). It's only managed to copy a small portion of this so far >> (about 35GB) and the server that currently is the mds master shows the >> ceph-mds process closing in on 2GB of RAM used. I'm getting a little >> nervous about this steep increase. >> >> fern ceph # ps wwaux | grep ceph-mds >> root 29943 3.7 0.9 2473884 1915468 ? Ssl 08:42 11:22 >> /usr/bin/ceph-mds -i 1 --pid-file /var/run/ceph/mds.1.pid -c >> /etc/ceph/ceph.conf >> >> Thank in advance! > > That's not necessarily a problem. The mds memory usage is controlled via > the 'mds cache size' knob which defaults to 100,000. You might try > halving that and restarting the MDS. Last time we counted those inodes were ~1KB each, so getting 2GB of memory used is an awful lot. Tren, what does your tree look like — are there very large directories? -- 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
