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 Post subject: Longest UPTIME on your destop PC?
PostPosted: Wed Sep 01, 2010 11:49 pm 
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Just wondering, how long time have YOU gone without rebooting your home/desktop PC? One guy I know has more than 450 days and counting on his, running CentOS.

I started my quest for something similar, now with a staggering 8+ days and counting. :lol:

How about YOU? 8)


Best off-topic regards,
Strid

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PostPosted: Thu Sep 02, 2010 12:26 am 
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i don't generally pay attention to it.

i leave the computer up, and reboot it when a patch demands it.

i've system uptimes in the neighborhood of 2-3 months before, but his power cycle, the computer's only been on for 7 days.

this is running windows 7.


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 Post subject:
PostPosted: Thu Sep 02, 2010 12:30 am 
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A few months at the most, just as poster above writes I too reboot when an update needs it. Win 7 is the OS.


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 Post subject:
PostPosted: Thu Sep 02, 2010 12:59 am 
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450 days sounds like a very insecure centos system ;)

I reboot my workstation whenever I need to (usually after an OS update).

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 Post subject:
PostPosted: Thu Sep 02, 2010 1:16 am 
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three weeks at most .... it's quite difficult to keep my computers up in long period since -annoying- power outtage occurs frequently in my country :x

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 Post subject:
PostPosted: Thu Sep 02, 2010 5:11 am 
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Wibla wrote:
450 days sounds like a very insecure centos system ;)

I reboot my workstation whenever I need to (usually after an OS update).


Aware of a remotely exploitable kernel bug? Because that's the only thing you need to reboot for. ;)


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 Post subject:
PostPosted: Thu Sep 02, 2010 5:58 am 
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Around two months. Usually, I just restart for Windows updates. The file server (unRAID), however, hasn't been turned off since April last year.


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 Post subject:
PostPosted: Thu Sep 02, 2010 6:51 am 
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18 hours....when I forgot to turn it off the night before.

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 Post subject:
PostPosted: Thu Sep 02, 2010 9:25 am 
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Wibla wrote:
450 days sounds like a very insecure centos system ;)

I reboot my workstation whenever I need to (usually after an OS update).


there's some program that allows linux users to install and use updates without rebooting the OS. i forget its name, but it saves you the downtime of rebooting.


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 Post subject:
PostPosted: Thu Sep 02, 2010 1:32 pm 
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Wibla wrote:
450 days sounds like a very insecure centos system ;)


Well, he only got the darn thing those 450 days ago... :lol:

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 Post subject:
PostPosted: Fri Sep 03, 2010 7:52 am 
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Code:
     #               Uptime | System                                     Boot up
----------------------------+---------------------------------------------------
     1    71 days, 13:33:05 | Linux 2.6.35-rc3          Sat Jun 12 19:51:58 2010
     2    32 days, 16:50:50 | Linux 2.6.34-rc5-git8     Thu Apr 29 01:56:35 2010
     3    31 days, 19:06:51 | Linux 2.6.33-rc8-git3     Thu Feb 18 17:53:48 2010
Code:
     #               Uptime | System                                     Boot up
----------------------------+---------------------------------------------------
     1   243 days, 02:24:49 | Linux 2.6.27-gentoo-r7    Fri Mar  6 11:07:33 2009
     2   171 days, 04:38:39 | Linux 2.6.31-gentoo-r10   Fri Mar  5 03:46:53 2010
     3    69 days, 01:27:39 | Linux 2.6.27-gentoo-r7    Wed Nov  4 15:08:28 2009
Code:
     #               Uptime | System                                     Boot up
----------------------------+---------------------------------------------------
     1   191 days, 19:40:40 | Linux 2.6.31-gentoo-r6    Fri Feb 12 12:46:15 2010
     2   109 days, 13:08:17 | Linux 2.6.27-gentoo-r8    Wed Apr  1 00:43:30 2009
     3   107 days, 14:20:21 | Linux 2.6.27-gentoo-r8    Sun Jul 19 13:55:29 2009

You get the idea..

Fayd wrote:
Wibla wrote:
450 days sounds like a very insecure centos system ;)

I reboot my workstation whenever I need to (usually after an OS update).


there's some program that allows linux users to install and use updates without rebooting the OS. i forget its name, but it saves you the downtime of rebooting.


It's called a package manager and a sane design. ie. Not Windows. Windows is pretty much unique in requiring a reboot for every single update.


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 Post subject:
PostPosted: Fri Sep 03, 2010 8:58 am 
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Monkeh16 wrote:
It's called a package manager and a sane design. ie. Not Windows. Windows is pretty much unique in requiring a reboot for every single update.


no, not a package manager. i know what a package manager is.

this isnt released under GPL. it's paid-for.

it's used for servers so that they minimize their downtime.


here we are.. http://www.ksplice.com/


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 Post subject:
PostPosted: Fri Sep 03, 2010 10:47 am 
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Monkeh16 wrote:
Wibla wrote:
450 days sounds like a very insecure centos system ;)

I reboot my workstation whenever I need to (usually after an OS update).


Aware of a remotely exploitable kernel bug? Because that's the only thing you need to reboot for. ;)


Maybe so, but when a kernel update comes through on my Ubuntu system every few weeks, I'd rather spend 5 minutes mindlessly rebooting it, rather than 30 minutes poring through kernel changelogs to determine if I need to spend 5 minutes rebooting. ;)


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 Post subject:
PostPosted: Fri Sep 03, 2010 11:16 am 
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Metaluna wrote:
Monkeh16 wrote:
Wibla wrote:
450 days sounds like a very insecure centos system ;)

I reboot my workstation whenever I need to (usually after an OS update).


Aware of a remotely exploitable kernel bug? Because that's the only thing you need to reboot for. ;)


Maybe so, but when a kernel update comes through on my Ubuntu system every few weeks, I'd rather spend 5 minutes mindlessly rebooting it, rather than 30 minutes poring through kernel changelogs to determine if I need to spend 5 minutes rebooting. ;)


There are security announcements y'know. ;)


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 Post subject:
PostPosted: Fri Sep 03, 2010 11:20 am 
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Fayd wrote:
Monkeh16 wrote:
It's called a package manager and a sane design. ie. Not Windows. Windows is pretty much unique in requiring a reboot for every single update.


no, not a package manager. i know what a package manager is.

this isnt released under GPL. it's paid-for.

it's used for servers so that they minimize their downtime.


here we are.. http://www.ksplice.com/


I wouldn't trust that as far as I could throw it. Especially as they seem to think Dreamhost are experts. A properly configured server will reboot in a matter of minutes, for free. Less probably, as you don't have to reboot the hardware any more.


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 Post subject:
PostPosted: Fri Sep 03, 2010 6:13 pm 
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Monkeh16 wrote:
It's called a package manager and a sane design. ie. Not Windows. Windows is pretty much unique in requiring a reboot for every single update.


that is not correct, windows does not require a reboot for every update.


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 Post subject:
PostPosted: Fri Sep 03, 2010 6:54 pm 
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I gave up that stuf fon the 90s..
unix kernels of course were impressiveon simpl machines.

today it is better, but no long runtimes, I choose no to.

windows 7 even logs a "boot optimization defrag"..
at least it is honest.

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 Post subject:
PostPosted: Fri Sep 03, 2010 8:17 pm 
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Windows uptime always gets ruined by updates. Longest I've gone is the longest interval there has been between critical updates, which incidentally isn't long. 2 months? :P

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 Post subject:
PostPosted: Sat Sep 04, 2010 3:37 am 
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danimal wrote:
Monkeh16 wrote:
It's called a package manager and a sane design. ie. Not Windows. Windows is pretty much unique in requiring a reboot for every single update.


that is not correct, windows does not require a reboot for every update.


Ok, more or less every update. Meanwhile I don't have to reboot more than once every four or five months.


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 Post subject:
PostPosted: Sat Sep 04, 2010 3:45 am 
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Required reboots are not really a problem anymore, on Linux or on Windows. And who gives a shit anyway? ;) This is a non-issue if you ask me.

I usually let my workstation (Win7) go to sleep on its own after a while, but sometimes even the modest 3W bothers me so I turn it of completely quite often. I seldom reboot just to reboot. My server (Linux) never sleeps and after a kernel upgrade I usually reboot it.

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 Post subject:
PostPosted: Sat Sep 04, 2010 3:55 am 
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Vicotnik wrote:
Required reboots are not really a problem anymore, on Linux or on Windows. And who gives a shit anyway? ;) This is a non-issue if you ask me.


They're a problem for me for a number of reasons. One is I lose my sample rate without the SPDIF source, which means no audio at all while one box is down. Another is that it's unnecessary wear on mechanical parts (fans, HDDs, etc).

Quote:
My server (Linux) never sleeps and after a kernel upgrade I usually reboot it.


Well it's not an upgrade without a reboot. ;)


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 Post subject:
PostPosted: Sat Sep 04, 2010 11:56 am 
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Monkeh16 wrote:
Ok, more or less every update. Meanwhile I don't have to reboot more than once every four or five months.


i apologize in advance for sounding like i'm ragging on you :) but that is a pointless goal... there is absolutely nothing wrong with rebooting a server.

Monkeh16 wrote:
Another is that it's unnecessary wear on mechanical parts (fans, HDDs, etc).


rebooting a server doesn't mean that you have to shut the power off, but...

how many times have i argued this with the engineers that i used to support... if the voltage spike on cold startup was an issue, how come the manufacturer(s) never have a specification for power cycling?

if it was a significant failure mode, there would be a limitation on it.


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 Post subject:
PostPosted: Sat Sep 04, 2010 1:44 pm 
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danimal wrote:
rebooting a server doesn't mean that you have to shut the power off, but...

how many times have i argued this with the engineers that i used to support... if the voltage spike on cold startup was an issue, how come the manufacturer(s) never have a specification for power cycling?

if it was a significant failure mode, there would be a limitation on it.

I have never seen an incandescent light bulb (or even florescent) burn out while it was on (although it can happen), but have frequently seen lights burn out when first turned on. So there definitely is some issue with turn-on spikes in electrical equipment.

But I am not sure if it applies to DC to the same degree as to AC. Also don't know if having a UPS and good PS can effectively prevent turn-on spike problems. However, even if it can happen (turn-on spikes damaging equipment), doesn't mean that it is anything to worry about in most circumstances for most parts. I do think that disk drives are an exception and there is some concern for them, which is why disk drives are rated for number of turn on cycles.


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 Post subject:
PostPosted: Sat Sep 04, 2010 3:43 pm 
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danimal wrote:
Monkeh16 wrote:
Ok, more or less every update. Meanwhile I don't have to reboot more than once every four or five months.


i apologize in advance for sounding like i'm ragging on you :) but that is a pointless goal... there is absolutely nothing wrong with rebooting a server.


It's not a goal, it's a reality. I do not need to reboot, because there are no updates which require it.


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 Post subject:
PostPosted: Sat Sep 04, 2010 7:47 pm 
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m0002a wrote:
which is why disk drives are rated for number of turn on cycles.


then you shouldn't have any problem showing us that rating, for the WD2001FASS that i just bought today.


Last edited by danimal on Sat Sep 04, 2010 7:52 pm, edited 1 time in total.

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 Post subject:
PostPosted: Sat Sep 04, 2010 7:51 pm 
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Monkeh16 wrote:
[
It's not a goal, it's a reality. I do not need to reboot, because there are no updates which require it.


it's a totally irrelevant reality; about as important as how cold the moon is.


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 Post subject:
PostPosted: Sat Sep 04, 2010 9:34 pm 
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danimal wrote:
then you shouldn't have any problem showing us that rating, for the WD2001FASS that i just bought today.

In checking the WD website, it appears they no longer publish on-off cycle ratings (at least that I can tell on their website). They do publish rated number of load/unload cycles (300,000), which is somewhat related to on-off cycles (both of which are tracked by S.M.A.R.T. the Self-Monitoring, Analysis, and Reporting Technology).

Seagate also rates many of its consumer drives for 300,000 load/unload cycles, and rates them for 100,000 on-off cycles (but the on-off cycle rating depends on humidity and temperature).

As to why WD no longer rates their drives for on-off cycles (even though Seagate does), I don't know, but probably because it not a "practical" limitation. If a drive is rated for 100,000 on-off cycles (as Seagate does), then that would be 27 reboots every single day for 10 years, something that is extremely unlikely to happen. Also, the 300,000 rating for load/unload cycles is likely to be reached before a 100,000 on-off cycle limit is reached (since a reboot includes two load/unload cycles).

Although I stated my opinion in a previous post that rebooting a modern computer should not be a concern, it would be absurd to suppose that one can reboot a computer an infinite number of times without some adverse affect to a hard drive (even if the drive did not completely fail).


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 Post subject:
PostPosted: Sun Sep 05, 2010 1:30 am 
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If the computer is rebooted, not shut down and then turned on again, then the HDDs continue to spin throughout the reboot cycle. Unless the HDDs are spun down to begin with; I've noticed that my disk server spins up all the HDDs one by one before a reboot.

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 Post subject:
PostPosted: Sun Sep 05, 2010 6:40 am 
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m0002a wrote:
As to why WD no longer rates their drives for on-off cycles (even though Seagate does


you still don't get it, so lets try another approach.

here is the seagate warranty: http://www.seagate.com/ww/v/index.jsp?l ... 04090aRCRD

do you see anything about power cycling in there? of course not.

a drive can be set to spin down during sleep mode, in order to save power, so the heads will park at that point, it's not just when the power is turned off.


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 Post subject:
PostPosted: Sun Sep 05, 2010 8:48 am 
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danimal wrote:
m0002a wrote:
As to why WD no longer rates their drives for on-off cycles (even though Seagate does


you still don't get it, so lets try another approach.

here is the seagate warranty: http://www.seagate.com/ww/v/index.jsp?l ... 04090aRCRD

do you see anything about power cycling in there? of course not.

a drive can be set to spin down during sleep mode, in order to save power, so the heads will park at that point, it's not just when the power is turned off.

I said that drives are rated for start-stop cycles. It turns out that WD no longer publishes that spec, but Seagate does. I also mentioned that the load/unload spec that WD publishes will likely occur first, so that may be why they don't publish a start-stop cycle spec (and also because it would be extremely difficult to actually test it).

I don't understand what the warranty has to do with this discussion (you will have to explain that to me).

I said previously that start-stop cycles is not a practical limitation, since no one can turn off and turn on (cold boot) their computer 100,000 times (the Seagate rating for their consumer drives). But the Seagate drives are nonetheless rated for start-stop cycles.


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