But for my old battery powered HP notebook running Linux and working on the Perft(14) project:
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sje@nancy:~/Arena/Symbolic$ uptime
00:29:03 up 152 days, 23:52, 3 users, load average: 2.00, 2.01, 2.05
Moderators: hgm, Rebel, chrisw
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sje@nancy:~/Arena/Symbolic$ uptime
00:29:03 up 152 days, 23:52, 3 users, load average: 2.00, 2.01, 2.05
09:27:40 up 361 days, 16:16, 1 user, load average: 0.12, 0.04, 0.05sje wrote:Due to power interruptions, it's uncommon that any of my desktop machines is up for much more than a month or two at a time.
But for my old battery powered HP notebook running Linux and working on the Perft(14) project:Code: Select all
sje@nancy:~/Arena/Symbolic$ uptime 00:29:03 up 152 days, 23:52, 3 users, load average: 2.00, 2.01, 2.05
Quite rare here indeed. I never understood all those ads for surge protectors and battery backups in US magazines. Just a random system I normally use for opening prep:Joost Buijs wrote:Here in the Netherlands the situation is somewhat better, in my city we've had maybe 2 or 3 power outages over the last 15 years.
I've had Windows machines (automatic updates disabled) running for more then a year without any interruption, so who's telling Windows is not stable?
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11:10AM up 872 days, 12:06, 1 user, load averages: 0.06, 0.08, 0.07
iBook 900 MHz PowerPC G3, 640 MB SDRAMsje wrote:Due to power interruptions, it's uncommon that any of my desktop machines is up for much more than a month or two at a time.
But for my old battery powered HP notebook running Linux and working on the Perft(14) project:Code: Select all
sje@nancy:~/Arena/Symbolic$ uptime 00:29:03 up 152 days, 23:52, 3 users, load average: 2.00, 2.01, 2.05
That's much better than my all-time record of some 500 days. I have read that a Linux system should be rebooted at least once a month to once a year to ensure that all updates are thoroughly integrated into the running image, so I haven't had an uptime longer than a year for a while.mhull wrote:iBook 900 MHz PowerPC G3, 640 MB SDRAM
12:55 up 1424 days, 19:18, 2 users, load averages: 0.40 0.12 0.17
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melissa:Symbolic sje$ uptime
13:24 up 56 days, 10:27, 3 users, load averages: 2.69 2.68 2.62
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sje@rebecca:~/Arena/Symbolic$ uptime
13:43:00 up 55 days, 14:46, 3 users, load average: 8.05, 8.04, 8.04
One left-pondian once explained the infra quality difference as more of a capitalism vs socialism phenomenon. A litmus test would be to compare Florida with Sweden.hgm wrote:I can imagine that on rocky terrain having subsurface cabling is prohibitively expensive. It is one of the few advantages of building in a swamp.
For critical work to continue for short outages, a UPS might do at least until you get your alternate power up and running. I have a Honda 3000ui generator (2800 watts continuous capacity) which ran for 10 days without interruption until the mains were restored. It's very quiet and provides clean power for sensitive electronics. Not cheap though.sje wrote:Nearly every power outage in my vicinity is caused by storms which topple trees which in turn topple power lines. Wind, snow, and ice conspire in the winter months for power outages that sometimes last for days.
Routing power lines below the ground is done mostly only for some government facilities at the federal level because of the great expense of running cabling through rocks.
Perhaps one out of a dozen outages is caused by a motor vehicle crashing into a utility pole.
The last power outage here was 56 days ago. The longest outage in the past decade was about four days with no telephone service for eight days.
Supplying battery power for the desktops is outside my current budget. However, in the Old Days (first half 1990s) when I had but one machine to build some five man tablebases, the months-long runs were supported and saved a couple of times with uninterruptible power supplies.