Hello, While testing a performance issue, I noticed that the number of creates that an NFS client can do over NFSv4 is significantly lower compared to NFSv3. I'm using the test below: https://github.com/distributed-system-analysis/smallfile Command run: smallfile_cli.py --operation create --threads 128 --file-size 1 --files 1024 --top <nfs-dir> [ 128 threads, each doing 1024 file creates of 1K size] This gives around 1169 creates/sec with NFSv4.1 and 8073 creates/sec with NFSv3. This is with the exact same client and server. NFS server is tuned to use 200 threads. When I looked at tcpdump, I noticed that over NFSv3 multiple parallel requests are being sent and NFSv4 is pretty much serial. Is there anything that I can tune to improve NFSv4 performance w.r.t to file creations? This also shows up in benchmarks like SpecFS SWBUILD's INIT phase where millions of files are getting created. Thanks, Pradeep
