task manager like tool for linux?
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From: Nasser M. Abbasi on 1 Jun 2010 18:22 On 06/01/2010 02:56 PM, Keith Keller wrote: > On 2010-06-01, The Natural Philosopher<tnp(a)invalid.invalid> wrote: >> Keith Keller wrote: >>> >>> Again, a task manager won't help you with this. Have you tried kill -9? >>> This should be considered a last resort, but if you've already tried >>> kill (which by defaults sends SIGTERM, or kill -15) then you basically >>> have no other real options anyway. >>> >> Reload the GUI. >> Or reboot the machine. > > Real men don't reboot! ;-) > > Killing X may end up simply orphaning the rogue process, making it a > child of init. It's worth a shot, of course, but the inevitable > question will be "what happens when the process doesn't die after I kill > X?" At that point you consider kill -9, or if frustrated enough a > reboot. > > --keith > humm... I had fedora 13 desktop now freeze on me. The whole gnome desktop froze. ctrl-alt-del does nothing like on windows? What else am i suppose to do? Had to reboot the machine. I think the problem is coming from a USB external disk I am using. It seems to be causing hangups. This is may be why xsane hangs sometimes, and when I did fdisk -l before the reboot, the command hanged up at this device also. I also had an rsync running copying stuff to this USB disk, and that seems to be frozen as well. So, I had to reboot the PC. On windows, I would have done ctrl-alt-del and found the process and killed it. Humm.... may be I should take this disk back and get a new one (it is a new disk, just bought it few days ago). I am not sure it is the USB disk, but I think it is. What does one do on linux when the desktop freezes like this? is there a way to avoid re powering the machine? --Nasser
From: Nasser M. Abbasi on 1 Jun 2010 18:31 On 06/01/2010 02:59 PM, Frank Steinmetzger wrote: > Nasser M. Abbasi wrote: > >> coming from windows to linux, I find that I miss the task-manager tool >> on windows. >> >> I am running fedora 13, and I like the linux tools below the desktop >> (shell commands) and all the other command line development tools, and >> that is the main reason I am moving to linux. >> >> But I am finding that sometimes some desktop applications hangs and >> something goes wrong. On windows, when this happens, I start the >> task-manager, find the process or the application, and kill it. > > In KDE, press Ctrl+Esc, in Gnome, you can add your own shortcut via > settings->Shortcuts to open gnome-monitor. Thanks Frank. I looked, called "system monitor" under system tools, in fedora 13. When the desktop froze on me earlier, I could not use it, as everything froze, had to reboot. But good to know now that such a tool exist. Will use the gnome system monitor again when something hangs up again, which I am sure will happen, to see if I can kill the process using it. --Nasser
From: David W. Hodgins on 1 Jun 2010 18:52 On Tue, 01 Jun 2010 18:22:45 -0400, Nasser M. Abbasi <nma(a)12000.org> wrote: > What does one do on linux when the desktop freezes like this? is there > a way to avoid re powering the machine? On my Mandriva 2010.0 system, the following works ... Hold down alt+ctrl and press the backspace key twice to kill the X server, and any gui applications. The X server should then restart, if you are using run level 5, or you can use startx, if using run level 3. If that fails, you should be able to force a clean reboot by holding down alt+ctrl+sysrq and pressing each of the keys RSEISUB, with a second or two wait between each key. This will kill all tasks, sync the file systems, and then reboot. See http://en.wikipedia.org/wiki/Magic_SysRq_key#.22Raising_Elephants.22_mnemonic_device I add an extra S just before the unmount (i.e. Still Utterly Boring). Regards, Dave Hodgins -- Change nomail.afraid.org to ody.ca to reply by email. (nomail.afraid.org has been set up specifically for use in usenet. Feel free to use it yourself.)
From: Keith Keller on 1 Jun 2010 18:56 On 2010-06-01, Nasser M. Abbasi <nma(a)12000.org> wrote: > > The whole gnome desktop froze. ctrl-alt-del does nothing like on > windows? What else am i suppose to do? Had to reboot the machine. IIRC X can be configured to capture ctrl-alt-del. I don't use GNOME so I don't know if it is configured that way by default. If your X freezes, your first step should be ctrl-alt-F1 (or, for most distros I know, F1 through F6 will all work) to switch to a different virtual console. It'll be a text-only console, but you can log in, try to find the offending process and kill it, or if not kill off X. To switch back to your X session (if you don't kill it) is (usually) alt-F7, but you can try any of the virtual consoles to look for it. Note that plain alt-Fn will work from a text console, but you need ctrl-alt-Fn to switch from a console running X. (It won't hurt to switch to a console that has nothing running on it, so you can try all the Fn keys.) Note that on most distros, from a text console ctrl-alt-del *will* cause a (clean) reboot! (i.e., tell init to switch to runlevel 6) In your hung X session, if you don't care about it you could try ctrl-alt-backspace first, which is the keystroke to kill X. If that doesn't work you can still try switching consoles. If *that* doesn't work, you can try to ssh in from another computer, if you have one available and your frozen machine is on the network. If none of those work, I don't know any other option than to kill the power. --keith -- kkeller-usenet(a)wombat.san-francisco.ca.us (try just my userid to email me) AOLSFAQ=http://www.therockgarden.ca/aolsfaq.txt see X- headers for PGP signature information
From: Keith Keller on 1 Jun 2010 19:04
On 2010-06-01, David W. Hodgins <dwhodgins(a)nomail.afraid.org> wrote: > > On my Mandriva 2010.0 system, the following works ... > Hold down alt+ctrl and press the backspace key twice to kill > the X server, and any gui applications. > The X server should then restart, if you are using run level > 5, or you can use startx, if using run level 3. > > If that fails, you should be able to force a clean reboot by > holding down alt+ctrl+sysrq and pressing each of the keys > RSEISUB, with a second or two wait between each key. I think it's better to try to switch to a virtual console before resorting to SysRq. (Some kernels may not support SysRq, as well? Though the running kernels I have right now do have it.) SysRq is definitely better than a hard poweroff though. --keith -- kkeller-usenet(a)wombat.san-francisco.ca.us (try just my userid to email me) AOLSFAQ=http://www.therockgarden.ca/aolsfaq.txt see X- headers for PGP signature information |