On Thu, 04 Dec 2014 09:17:17 -0800 Shirley Ma <shirley.ma@xxxxxxxxxx> wrote: > I am looking at how to reduce total RPC execution time in NFS/RDMA. mountstats output shows that RPC backlog wait is too long, but increasing the credit limit doesn't seem help. Would this patchset help reducing total RPC execution time? > > Shirley > I'm not sure. It depends on why you're seeing a backlog. So far, my testing still shows this to be slightly (~2%) slower than the same setup running a threaded nfsd, but that could be different with a NUMA server or faster disks. Probably there is some more tuning to do here before this is quite ready for prime-time. It may be worth testing in your environment though if you have the time and ability to do so. > On 12/04/2014 03:47 AM, Jeff Layton wrote: > > I was using ftrace with the sunrpc:* and workqueue:* tracepoints, and > > had a simple perl script to postprocess the trace info to figure out > > average/min/max latency. -- Jeff Layton <jlayton@xxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
