Just one more piece of information: a simple recompile isn't what has fixed the problem every time, the recompile has involved an upgrade to 2.6.16 as well On 21 Aug 2006, at 15:06, David King wrote: > I seem to be having a problem with CentOS releases 4.2 and 4.3. On > a fresh install (on two very different pieces of hardware, one Dell > PowerEdge server and one Compaq Presario), the system seems to be > extremely slow. It happens primarily during any hard disk I/O. > > It's slow enough that my mouse skips slowly instead of moving > smoothly, and I am unable to type. It seems to freeze for > milliseconds at a time, which makes typing difficult because while > it is frozen it seems to not accept keystrokes (that is, if I type > the letter 'f' twelve times, only four of them may appear, > depending on timing). It may be unrelated, but the clock seems to > go more slowly during I/O as well (i.e. during times of I/O the > clock runs behind more and more). If I were to extract a large > tarball, I would have to wait for the while thing to finish before > I could interact with the system at all > > A simple recompile of the kernel from kernel.org sources (which, as > you can imagine, takes quite a long time) fixes the problem > entirely, though. So is there something that differs wildly > regarding the I/O scheduler between the stock CentOS kernel and the > stock kernel from kernel.org? > > It would really be more convenient to be able to keep our kernel up- > to-date automatically using the built-in packaging tools, so I hope > that someone has seen the problem and has a work-around > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos -- David King Computer Programmer Ketralnis Systems