Re: Starvation with find?
Dave Kleikamp <shaggy <at> austin.ibm.com>
2004-07-02 18:04:59 GMT
On Fri, 2004-07-02 at 09:58, John Goerzen wrote:
> On Fri, Jul 02, 2004 at 03:54:57PM +0100, Antonio P. P. Almeida wrote:
> > > CPU usage usually remains low but occasionally spends a couple of
> > > seconds at 100%.
> > >
> > > Any thoughts?
> > This is just to say that when I installed 2.6.4 in my laptop it
> > presented similar symptoms. IIRC, there was *heavy*, really *heavy*
> > I/O activity, ditto for the CPU -- basically the machine was less than
> Glad to know I am not alone
> > sluggish when doing the daily updatedb. That's when I decided to stay
> > with 2.4 until the 2.6 problems -- or what seems to be problems -- get
> > sorted out.
> I should also add: I have not seen this problem in reiser, ext2, or
updatedb is notorious for causing everything else to swap out of memory,
but I don't know why this would affect jfs more than any other file
system. jfs does have a larger in-memory inode, but I would expect the
result to be that fewer jfs inode would be cached. I would think that
with updatedb running, you'd eventually push everything useful out of
Anyway, I ran updatedb against my jfs volumes on 2.6.7 and 2.4.27-rc2,
both with and without noatime, and neither brought the system anywhere
near a crawl. I don't know of any changes in jfs between 2.6.4 & 2.6.7