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 > ext3.
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 memory anyway. 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 that would have improved the situation. -- David Kleikamp IBM Linux Technology Center _______________________________________________ Jfs-discussion mailing list [EMAIL PROTECTED] http://www-124.ibm.com/developerworks/oss/mailman/listinfo/jfs-discussion
