From: david@dlomas.uucp (David Lomas)
Subject: SCO NFS High Load Averages
Organization: Lomas Data Management Inc.
Distribution: na
Date: Tue, 21 Jul 92 20:10:55 GMT
Keywords: FTP+, NFS, Load Average 

Hi all:
I hope that someone can point me in the right direction with what I'm 
sure is a SCO-related problem.

We're running SCO Unix ver 3.2.2 with TCP/IP & NFS. After a DOS-based
PC running FTP's TCP+ (ver 1.05) makes any use of NFS (Interdrive),
the output of the "w" command yields something like;

8:25am  up 2 days, 12:46,  1 users,  load average: 4.00, 4.00, 4.00

A partial listing of the output of "ps -ef" gives the following;

   root   283     1  0  Jun 17   ?        0:00 slink 
   root   296     1  0  Jun 17   ?        0:00 inetd 
   root   328     1  0  Jun 17   ?        0:00 portmap 
   root   298     1  0  Jun 17   ?        0:01 routed 
   root   301     1  0  Jun 17   ?        0:04 rwhod 
   root   330     1  0  Jun 17   ?        0:03 pcnfsd 
   root   332     1  0  Jun 17   ?        0:01 mountd 
   root   335     1  0  Jun 17   ?        5:52 nfsd 4 <<<
   root   337   335  0  Jun 17   ?        5:36 nfsd 4 <<< look at these
   root   338   335  0  Jun 17   ?        6:17 nfsd 4 <<<
   root   339   335  0  Jun 17   ?        5:51 nfsd 4 <<<
   root   340     1  0  Jun 17   ?        0:00 nfsclnt 4 
   root   342     1  0  Jun 17   ?        0:00 biod 4 
   root   343     1  0  Jun 17   ?        0:00 biod 4 
   root   344     1  0  Jun 17   ?        0:00 biod 4 
   root   345     1  0  Jun 17   ?        0:00 biod 4 
   root   347     1  0  Jun 17   ?        0:00 statd 
   root   349     1  0  Jun 17   ?        0:00 lckclnt 4 
   root   351     1  1  Jun 17   ?        3:25 lockd  <<< and this
   root   353     1  0  Jun 17   ?        0:00 rexd 

There's nothing in the SAR reports that show anything extraordinary,
with the exception of sometimes  when the load averages approach 6,
the CPU %idle tends to 0% (sar -u).

Weird thing is , if no DOS-based PC uses NFS, load averages stay about
at zero.

If we mount (via NFS) the same part of the SCO system on a Sun system
via NFS, the load averages (on the SCO box) go up to 2 and stay there,
the load averages on the Sun box also go up to 1+, but decline to 0
after "umounting" the SCO drive.

Simply TCP/IP from anybody to anybody, r-login's, and the like have
no effect.

Our SCO software;

Set                              Release   Notes            
---                              -------   -----            
Host Support Module              1.6.6a    installed        
 (prd = unixos)                  3.2.2s    partially installed
NFS Development System           1.1.0b    installed        
SCO NFS Runtime System           1.1.1d    installed        
SCO UNIX 3.2v2/NFS Maintenance D 1.0.0b    installed << lockd fix ??
SCO TCP/IP Maintenance Supplemen 1.0.0b    installed        
SCO LLI Driver disk              1.0.0q    installed        
SCO TCP/IP Runtime System        1.1.3f    installed        
Quicksilver/UNIX for SCO XENIX   1.3b.2    installed        
Microsoft Word 5.1               5.1.1b    installed        
Software Development System      3.2.2a    installed        
SCO Professional                 2.0.1h    removed          
SCO VP/ix                        1.2.0n    installed        
SCO Computer Graphics Interface  1.1.0d    installed        
SCO FoxBASE+                     2.1.1a    installed        
NEC Specials                     1.0       installed        
 (prd = unixos)                  3.2.2s    installed        
SCO System V Operating System    3.2.2s    partially installed
 (prd = unixos)                  3.2.2s    installed        
 (prd = unixos)                  3.2.2s    partially installed

Sorry for the long posting, if anyone can shed some light ( even heat
appreciated, sigh...)

-- 
David Lomas
Xref: sparky comp.unix.sysv386:12339 comp.os.linux:6542