Neil T. Mathison
Wed, 25 Mar 1998 19:19:05 -0500 (EST)
On Wed, 25 Mar 1998, Damond Walker wrote:
> ...a year or two without rebooting.
> Where have you had that happen? The only system that runs a year or two
> without *some* kind of reboot is a system that isn't used.
Here are some real stats from for some of the systems
we have in my company. (Note: The desktop platforms are rebooted often by
the users as a general approach to fixing a problem. With proper
administration of these platforms, more uptime could be squeezed out
of them I'm sure.)
system OS uptime last reboot for
-------------- ---------------------- --------- ---------------
DEC3000/300 Digital Unix 4.0B 341 days OS upgrade
- Functions as intranet server (apache), mail (pop and imap), primary
DNS, primary ftp site, dhcp and samba
SGI ChallengeS Irix 6.2 262 days kernel rebuild
- Functions as internet web server (apache), listproc, sql DBMS for web,
secondary DNS, some employee user accounts
Digital 486/66 FreeBSD 2.2.1 127 days hardware upgrade
- Functions as router/gateway to internal private subnet. Does ip
filtering, network address translation.
SGI Indy Irix 6.2 26 days swap out bad drive
- Development system (photoshop, web development tools)
DEC Alpha 2000 Win NT 3.51 46 days blue screened
- File services, print spooling, finance dbms
Digital VAX Open VMS 6.1 201 days network rewiring
- runs some legacy applications
Macintoshes MacOS 7.6/8.1 often performed by user
WinTel Win 95 often performed by user
Of course the servers do need a steady dose of massaging - eyeing the
logs daily, tweeking processes, monitoring swap space, etc.
Unix ain't that bad.
Unix Systems Administrator
Corporation for Public Broadcasting