21 Jun
2010
21 Jun
'10
4:03 p.m.
From: Alexandre Lecuyer alex.ranskis@gmail.com
We've had an interesting NFS performance issue with the following setup. Clients : CentOS 5.5, kernel 2.6.18-194.el5 Server : Solaris 10 kernel Generic_142901-08 /proc/mounts shows rsize has been negotiated to 1mB If we force rsize to a smaller value, 32kB, the problem goes away and we're back around 70/80 mB/s read performance.
Not sure but the nfs faq says to look at /usr/include/linux/nfsd/const.h
/* * Maximum blocksize supported by daemon currently at 32K */ #define NFSSVC_MAXBLKSIZE (32*1024)
JD