On Thu, 2001-12-27 at 12:25, cradeke wrote:
> Interesting thing... Some people (including me) have seen this
> myserious
> kupdated runnings on smp machines only. Maybe there is something wrong
> with
> filehandling.. something like that a deadlock occures. I can reproduce
> it when I
> write to a nearly full xfs. 1% left but only on one of my partitions...
> it is
> the last one. Another partition which is the first one at the same disc
> can be
> filled up to 100%. Some people wrote that the problem went away if they
> running
> a single cpu kernel. Your simple test shows that there is a real problem
> with
> xfs which should be solved quickly. After such a kupdated amok running
> opened
> files are filled with @'s and any change or creation of new files are
> lost. I
> saw this with 2.4.2 / 2.4.5 smp-kernels and with xfs-1.0 / 1.01.
Another (possibly unrelated) data point:
Personally, all my kupdated problems disappeared with the new VM. My
problems were non-fatal but annoying. Basically kupdated enjoyed hogging
the entire machine (using about 50% of the CPU). 'Big' graphical things
(screensavers, moving windows, etc.) were annoyingly slow. Starting
large apps like Mozilla, XEmacs, Star Office took forever...
Something like this happened: slocate causes the cache to swell to the
size of the remaining memory on the machine. kupdated spent it's entire
life looking for spare bits of memory. (Allocating and freeing a hundred
meg or so made the machine responsive again).
Now this no longer happens - the computer is fast and fun. Just like in
the 2.2 days. ;-)
2 things could now happen:
1. The new VM/other kernel work has cured this bug (can't remember what
kernel version others reported).
2. The new VM/other kernel work will only trigger this bug far less
often and it'll be a bugger to track down.
nic
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