Thanks Malahal, i have seen similar performance between 2.5 and 3.3 for AUTH_SYS and krb5
mounts. iozone tool took similar time on both versions.
v3.3 - sys - 9m15.870s
v2.5 – sys - 9m20.688s
v3.3 – krb5 - 9m32.907s
v2.5 – krb5 - 9m18.325s
I have not the number of threads - so it is default : thrd_max 200 gss_seq_win 800 -
window size is based on your fix. Do you think tuning window size would fix this issue ?