Re: khubd and ent:sda1 sucking CPU with reiser4 + USB HD
Alan Stern <[email protected]>
| Newsgroups | gmane.linux.usb.devel,gmane.linux.kernel |
|---|---|
| Message-ID | <[email protected]> |
On Wed, 7 Mar 2007, Pete Zaitcev wrote: > On Wed, 7 Mar 2007 17:18:29 -0500 (EST), Alan Stern <[email protected]> wrote: > > > I've never heard of a process failing to show up in a SysRq-t listing. It > > suggests something is wrong with the process management in the kernel you > > were using. That leads me to think a non -mm kernel might give more > > informative results. > > I think, if a process is looping, it's not shown in SysRq-t. So maybe > khubd is on a CPU. You mean, if it is currently running? I don't believe that. A simple test comparison shows every process listed in "ps -A" also listed in SysRq-t. > In RHEL we have a patch for SysRq-w, which showed all CPU states by > the way of a special IPI (unless looping with closed interrups, of course). > But this capability seems a bit degraded in stock SysRq-w. It might not > catch this (does not seem for me in 2.6.20). > > Another possibility is, something killed khubd. It's only a process > after all. Remember how we had grief with it being killed by "telinit 1". If it was killed then it wouldn't show up in "ps" or as a directory under /proc. Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel