Hi I just started looking at the ceph code in kernel and had a question about performance considerations for lookup operations. I noticed that for every operation (say copying a directory), the root dentry is "looked" up multiple times and since they all go to MDS for the actual lookup operation, it effects the performance. I am sure consistency is the winner here. Is there any plan to improve this, maybe by having MDS push the capability down to the clients when the dentry is updated. So say from CAP_EXCL to CAP_SHARED when the dentry is modified. This was the client node can cache the lookup operation and does not have to make a round trip to the MDS. thanks in advance, Jojy -- 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
