Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx> writes: > On 02/03/2016 07:54 PM, Jeff Darcy wrote: >>> Problem is with workloads which know the files that need to be read >>> without readdir, like hyperlinks (webserver), swift objects etc. These >>> are two I know of which will have this problem, which can't be improved >>> because we don't have metadata, data co-located. I have been trying to >>> think of a solution for past few days. Nothing good is coming up :-/ >> In those cases, caching (at the MDS) would certainly help a lot. Some >> variation of the compounding infrastructure under development for Samba >> etc. might also apply, since this really is a compound operation. > Even with compound fops It will still require two sequential network > operations from dht2. One to MDC and one to DC So I don't think it helps. You can do better. You control the MDC. The MDC goes ahead and forwards the request, under the client's GUID. That'll cut 1/2 a RTT. Cheers, -Ira _______________________________________________ Gluster-devel mailing list Gluster-devel@xxxxxxxxxxx http://www.gluster.org/mailman/listinfo/gluster-devel
