Messages in this thread | | | Date | Mon, 1 Mar 1999 18:41:28 -0700 (MST) | From | David Ford <> | Subject | Re: 2.2.2: Freeze (possible kb failure) |
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On Sun, 28 Feb 1999, Alan Cox wrote: > > On Sun, 28 Feb 1999, Tim Waugh wrote: > > >messages like "server not responding, still trying" and "task can't get a > > >request slot" were appearing. > > > > It's a reported nfs client bug AFIK. I don't know if somebody is going to > > fix it. > > Various people have been fixing the NFS client a lot. Notably Trond's > work makes it go a lot faster and Linus has been doing some fixes to > certain caching cases. > > The "server not responding" normally comes from true server congestion, > the "can't get a request slot" is the client then backing up requests and > is fine. > > The big problem one is with the VM - its quite possible to get a heavily > loaded 2.2.x box to the point where it has no 8K blocks and thus cannot > complete an NFS transaction. The existing VM layer fails to get out of this > problem (block size aggregation isnt yet in it - though there are some > patches for this too).
just to throw a little more weight onto the keyboard interaction, i can nearly duplicate this. i have a 486 machine that will flat out act like molasses in penguinland if you unplug the keyboard. pinging it will go from .2ms up to about 10-50,000ms. all processes running on the machine halt as well. a dozen seconds after plugging the keyboard back in, everything returns to normal. the first time this happened, i didn't realise the keyboard had become disconnected and very nearly rebooted it due to the excessive lag from my ssh connection. this is not a ps2 keyboard.
this one is most like the above network timeout/halt bug.
i'd wager there are some funky keyboard interactions that exist out here in userland. i have another story.
i have two ps2 keyboards from the same manufacturer. same brand, everything. i have a computer that is very finicky. one of the keyboards will -not- work when plugged into it. linux reports keyboard timeouts on bootup. it will -not- work even if you unplug and replug it to reset it.
this keyboard works perfectly everywhere else that i've tried.
and yet another keyboard story.
i have another server that requires a power down/reset button everytime you want to reboot it or the keyboard will not work. it'll act like the above keyboard.
...give me time and i'll find more keyboard issues =)
-d
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