# hardware and system version
We see 4k test is very slow on nfs client. Can someone help me troubleshoot?
# dd test performanceCPU:Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz * 2
MEMORY: 128G
POOL: 2T * 10 (raidz3) + 512G * 2 L2ARC
TRUENAS: TrueNAS-13.0-U3.1
# on truenas local
root@freenas[/mnt/dev1/docker]# dd if=/dev/zero of=test.dat bs=1M count=400 conv=fsync oflag=direct
400+0 records in
400+0 records out
419430400 bytes transferred in 0.126497 secs (3315728885 bytes/sec)
root@freenas[/mnt/dev1/docker]# dd if=/dev/zero of=test.dat bs=512K count=800 conv=fsync oflag=direct
800+0 records in
800+0 records out
419430400 bytes transferred in 0.128923 secs (3253346675 bytes/sec)
root@freenas[/mnt/dev1/docker]# dd if=/dev/zero of=test.dat bs=4K count=20000 conv=fsync oflag=direct
20000+0 records in
20000+0 records out
81920000 bytes transferred in 0.135577 secs (604232041 bytes/sec)
# nfs# on nfs client (1GB network)
[root@node1 docker]# dd if=/dev/zero of=test.dat bs=1M count=400 conv=fsync oflag=direct
400+0 records in
400+0 records out
419430400 bytes (419 MB) copied, 4.01762 s, 104 MB/s
[root@node1 docker]# dd if=/dev/zero of=test.dat bs=512K count=800 conv=fsync oflag=direct
800+0 records in
800+0 records out
419430400 bytes (419 MB) copied, 4.39617 s, 95.4 MB/s
[root@node1 docker]# dd if=/dev/zero of=test.dat bs=4K count=20000 conv=fsync oflag=direct
20000+0 records in
20000+0 records out
81920000 bytes (82 MB) copied, 6.95326 s, 11.8 MB/s
# other# client mount
192.168.10.16:/mnt/dev1/docker on /docker type nfs4 (rw,noatime,nodiratime,vers=4.1,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=192.168.10.120,local_lock=none,addr=192.168.10.16,_netdev)
Truenas pool already set sync disable
We see 4k test is very slow on nfs client. Can someone help me troubleshoot?