[Bug 276299] Write performance to NFS share is ~4x slower than on 13.2

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276299

--- Comment #6 from Rick Macklem <rmacklem@FreeBSD.org> ---
Oh, and it might be worth capturing packets
while writes are slow and taking a look at
them in wireshark. (Unlike tcpdump, wireshark knows
NFS.)

Something like:
# tcpdump -s 0 -w out.pcap host <nfs-client-host>
on the NFS server and then look at out.pcap
in wireshark. (I just install wireshark on my
Windows laptop. No need to bother with X windows.)

You might see error replies for NFS RPCs or TCP
timeouts/retransmits that would explain the slowdown.
(Or TCP reconnects. I once saw a case where the
network switch would decide to inject an RST in the
TCP stream forcing the NFS client to create a new
connection. Why did it do this? No idea.)

-- 
You are receiving this mail because:
You are the assignee for the bug.