Re: What does this mean from dmesg?

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On Friday 21 December 2007 10:53:01 Gilbert Sebenste wrote:
> Getting lots of these when doing dmesg:
>
> audit: audit_backlog=321 > audit_backlog_limit=320
> audit: audit_lost=1700 audit_rate_limit=0 audit_backlog_limit=320
> audit: backlog limit exceeded

It means that you are getting flooded with audit events. You can increase the 
audit daemon's priority to make sure it has enough run time to empty its 
queue or lengthen the backlog.

To lengthen the backlog, edit /etc/audit/audit.rules and change the "-b 320" 
to "-b 8192". This will allocate 8192 buffers in the kernel for audit events 
instead of 320. If that doesn't do it, bump the priority by 
editing /etc/audit/auditd.conf and change "priority_boost = 3" 
to "priority_boost = 4" or 5.

But this begs the question about what is flooding your system. To find out, 
run "aureport --start today" and look around to see what kind of things is 
happening. Maybe "aureport --start today --event --summary -i" would be 
helpful, too.

-Steve

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