problems with KAV for FreeBSD 6.0

[Duane Whitty]

On Thu, Feb 15, 2007 at 02:02:47PM -0500, Roldan Vallejo Olivera wrote:
> hello list:
> I have a FreeBSD 6.0 running in an HP Proliant GL 370, Dual Xeon 3.2 GHz, 
> 1GB RAM, and RAID-5 75 GB, in this system we have a BIND DNS service and a 
> Sendmail as a mail relay-only server, processing an average of 3GB messages 
> daily, we have purchased a KAV license for 4 GB traffic daily, but we are 
> having problems: sometimes our server runs out of resources and issues the 
> following message error:
> "maxproc limit exceeded by uid 0, please see tuning(7) and login.conf(5) 
> ns1 sendmail[545] syserr (root): <mailbox at mydomain.com>   openmailer 
> (smtpscanner): cannot fork: resource temporarily unavailable no queue: 
> syserr(root): daemon: cannot fork"
> 
> at this moment when I try to login at the server i receive this error:
> "login: login: fork: resource temporarily unavailable"
> 
> the server replies at ping command, but doesn't allow telnet neither ssh, 
> and stops processing messages. we have noticed  this scenario runs out of 
> free memory as we read the output of top command:
> 
> "last pid: 26888;  load averages:  1.02,  0.91,  0.54  up 3+19:06:18 
> 03:10:00
> 615 processes: 4 starting, 2 running, 608 sleeping, 1 lock
> 
> Mem: 698M Active, 58M Inact, 188M Wired, 48M Cache, 111M Buf, 3532K Free
> Swap: 4096M Total, 24M Used, 4071M Free"
> 

Free memory seems adequate here.  You have very little swap space used.  FreeBSD
uses the philosophy that free memory is wasted memory.

> As soon as I reboot the system everything works fine for the next 3 or 4 
> days... I don't know what's exactly the problem and of course, I have no 
> idea of the solution, can anybody help me, please?
> thanks in advance
> roldan
> 

What does sysctl kern.maxusers show?  Depending on what the current value of
this is you may want to increase it.

Below is my current value for kern.maxusers
dwpc@ /etc>sysctl kern.maxusers
kern.maxusers: 250

kern.maxusers sets many kernel parameters and does not 
actually specify the number of users which can use the system.

This and other tuning options can be found in tuning(7).

--Duane