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I'm using a laptop with Gentoo 2.6.17 to play a game, but the harddrive won't stay spinning. The game constantly hangs while the hard drive spins down, only to spin up again a few seconds later. I've messed with everything I could in the very limited bios of the laptop with the hopes of turning off all 'power saving' features that might encourage it to kill the HD as fast as possible, but even on AC power, it doesn't seem to change. Googling this only returns people wanting to -turn off- their hard drive when not in use. My laptop is already very good at that.  Is there a clever way (maybe a program already exists) to keep the hard drive spinning while the game is going, or at least a manually toggleable solution?
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Apr 4, 2007 05:08
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Digital Drifter posted:hdparm -S0 /dev/hda should disable the drive spin down feature  Awesome, thank you. ( -B255 disables the power management entirely )
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Apr 4, 2007 07:45
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Is there a way to view or monitor individual core load in a Dual 3.6Ghz Xeon Gentoo environment? I would like to know if those four cores are actually being used at all.
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Jul 3, 2007 14:54
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dfn_doe posted:Go into 'top' then hit '1' to toggle 'SMP view'. Ooooooh, didn't know top could do that. I'm at work today so I haven't had a bunch of time to look into it, but the top's help didn't reveal anything: is it possible to also see individual process load on the individual cores? And a bonus question, are these statistics (just individual core load) available through snmp? I'll take some time to investigate this later myself, but it would be a timesaver if someone knew this off the top of their head!
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Jul 3, 2007 17:34
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I tried f and y, but as far as I can tell, displays a "Sleeping in Function" field which doesn't seem to be relevant. '[' does not seem to be a valid button anywhere, whether at the default view, or on the f screen for field selection.
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Jul 3, 2007 18:23
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I was in the shower and ended up thinking up something I keep wondering about. I have a persistant world gameserver that runs on dual processor, dual core server (4 effective processors) but the server process is not a multithreaded application. It pretty much only makes one processor loaded, jumping to a different processor every so often. I was wondering about designating a process to run on a certain processor. If I do only that, I would figure you get a very miniscule preformance increase associated with reduced overhead from switching processors. However, I am pretty sure I could get multiple instances of the server process running and have the in game 'world' spread across multiple server instances. There, I could assign 4 instances of the server each to it's own processor, and probably see a benefit there. My last idea is just to start up multiple server instances without assigning processors (if that can even be done), and just let the scheduler do it's magic. That is probably the best idea anyway. >_>
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Aug 12, 2007 04:25
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What would cause grub to *poof* in a power outage, and what can I do to prevent it? Reason I ask, is because I have a server collocated at a cheap but decent provider. Recently, their redundant power systems supposedly had a hiccup and caused every machine on that system to power cycle, including mine. However, mine did not come up, and according to their techs after a few hours of email tag, it appeared grub had to be reinstalled. They reinstalled it, and everything was back up and good. My grub.conf file was even still there. Fast forward to today, my server is unreachable. A few pings make it seem like it's just my machine once again leading me to believe it's back to the same grub problem. Going back in my mind, I think I may have mounted the boot partition to look at the grub.conf file back when it was last restored and I may not have unmounted it. Might that be the problem? If not, what else could be causing this? (The only thing on the machine is Gentoo. According to the tech last time, none of the drives in it were bootable until he reinstalled grub.)
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Jun 1, 2008 00:52
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Apparently it just needed a reboot. I can't figure out WHY it needed a reboot. Nothing weird in /var/log/messages when it stopped aside from the clock being off by two hours and nptd complaining about it (which is fixed now). /shrug
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Jun 1, 2008 02:01
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Some lightweight utility (or other way) to track the amount of bandwidth used. SMTP+MRTG is already running on this server, but I am currently not getting counts of bandwidth used, just a rate counter (I figure the solution is pretty close already). I'd like something that could break it down by month automatically too.
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Aug 11, 2008 03:00
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Oh boy, both of these give me just what I'm looking for, thanks! (I went with vnStat and it's rocking out)
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Aug 11, 2008 23:05
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Is there a way to "screen" something AFTER you started it? Normally I am pretty good about putting long running processes in screen sessions so I can kill my ssh client and do other things if I have to. However, awhile ago I started running badblocks without screen on a big partition, but now I have to make some network changes do the machine I have the ssh client running on. I don't want to have to start badblocks over. Can it be done?
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Aug 25, 2008 02:03
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I want to add a very specific command to sudoers:code:code:
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Sep 22, 2008 19:26
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Ah, thanks.
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Sep 22, 2008 21:17
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http://archive.ubuntu.com/ubuntu/dists/ What-in-hells. There is no /feisty/ directory. I'm trying to get a few simple packages like dhcp3-server installed on a soekris board and keep hitting snags. Intrepid Ibed would not install on it which is why I used feisty. Would it be safe to use a repository from before feisty (like Dapper) to get dhcp3-server? And in ubuntu, is editing /etc/apt/sources.list the 'proper' way to do that?
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Jan 11, 2009 08:21
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Ah thanks. I didn't know about old-releases. This is coming along swimmingly.
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Jan 11, 2009 22:48
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On using sed: I'm trying to reformat some lines in a text file. First thing I need to do is change a date format. A line looks like: code:code:code:code:
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Apr 13, 2010 00:04
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Oh. Good point. Is there a way to execute shell commands within the scope of sed? I saw some reference to using $([command]) but haven't had any luck with that either. I don't know perl well enough to whip up something like this, and with a bash script I'd probably embed sed and fall into the same trap.
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Apr 13, 2010 01:26
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| # ¿ Apr 24, 2024 08:46 |
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If nothing else crops up, I'll do that. I probably led you on to believe I know a lot less about bash scripting than I actually do by highlighting my stubbornness to try to do this with one line here. If I can't do it in a sed one-liner (which I was shooting for), yes, some simple loops will work out in the end. Anyway, thanks!
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Apr 13, 2010 02:17
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