From owner-freebsd-bugs  Wed Aug  9  1:10: 5 2000
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Date: Wed,  9 Aug 2000 01:09:10 -0700 (PDT)
From: brett@lariat.org
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Subject: conf/20498: All FreeBSD systems trigger massive late-night activity at the same times
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>Number:         20498
>Category:       conf
>Synopsis:       All FreeBSD systems trigger massive late-night activity at the same times
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Aug 09 01:10:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Brett Glass
>Release:        Various
>Organization:
>Environment:
>Description:
All FreeBSD systems, for a very long time, have come with a fixed /etc/crontab
which triggers system security and statistics-gathering scripts at the same
time on each system. A room full of FreeBSD machines is a sight and sound to
behold at this "witching hour." The sudden churning of the hard drives, and the 
slowdown in the entire network (especially if the machines are mail, news, or 
Web servers) can be quite dramatic. So can the power surge; we see the load
indicators on our UPSes peak at that time.
>How-To-Repeat:

>Fix:
It'd be a good idea to randomize the times at which these scripts are 
triggered at install time. The run times should be distributed within 
a 3-hour period -- say, from 2 to 5 AM.

>Release-Note:
>Audit-Trail:
>Unformatted:


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