On Mon, Oct 27, 2008 at 10:25:49AM -0400, Lennart Sorensen wrote: > On Sun, Oct 26, 2008 at 09:05:42PM +0530, Vikram Vincent wrote: > > The following messages keep repeating at regular intervals and I am not sure > > how to deal with them or to ignore them. > > Any suggestions will be useful. > > Thanks. > > Vikram Vincent > > I have seen similar multi minute "hangs" on my Q6600 running amd64 with > 2.6.26 kernel. I have no idea what caused it to start happening in > 2.6.26. I am now running with nohz=off highres=off which seems to have > made the problem go away. 2.6.25 and earlier never do it. It also > seems to always be related to disk IO. > [snip] I have seen it start to happen when my md's resync, a 10 disk raid6 take a while to resync and I get lots of these messages. In fact any reshaping/resync'ing activity brings these up. I have re written the monthly resync to turn off the warning whilst it is running and turn it back on when it is finished. I also use the deadline io schedular Alex > > -- > Len Sorensen > > > -- > To UNSUBSCRIBE, email to debian-amd64-REQUEST@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org > > -- A manager went to the master programmer and showed him the requirements document for a new application. The manager asked the master: "How long will it take to design this system if I assign five programmers to it?" "It will take one year," said the master promptly. "But we need this system immediately or even sooner! How long will it take it I assign ten programmers to it?" The master programmer frowned. "In that case, it will take two years." "And what if I assign a hundred programmers to it?" The master programmer shrugged. "Then the design will never be completed," he said. -- Geoffrey James, "The Tao of Programming"
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