We have noticed the same problem on several systems. There is an open bugzilla issue about this, but to my knowledge the only fix at this point is to revert back to kernel-2.4.21-15.04.ELsmp. Here is the link to the bugzilla issue: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=133183 Hope this helps, Jim Webb, RHCE Administrative Office of the United States Courts IT Systems Deployment and Support Division, San Antonio, TX <table width=100%> <tr valign=top> <td width=40%>"Doctor Khumalo" <doctortechie@hotmail.com> Sent by: rhn-users-bounces@redhat.com 12/08/2004 02:59 PM <table border> <tr valign=top> <td bgcolor=white> <div align=center>Please respond to Red Hat Network Users List <rhn-users@redhat.com></div></table> <td width=59%> <table width=100%> <tr> <td> <div align=right>To</div> <td valign=top>rhn-users@redhat.com <tr> <td> <div align=right>cc</div> <td valign=top> <tr> <td> <div align=right>Subject</div> <td valign=top>[rhn-users] kswapd problems</table> <table> <tr valign=top> <td> <td></table> </table> <tt>I have two servers running RH Enterprise Linux (release) 3 with the latest up2date patches running on kernel 2.4.21-20.ELsmp. These are Dell PowerEdge 1750 server with external Powervault 220s RAID. Both servers are experiencing latency when running basic I/O commands such as scp or rsync. These appear to cause kswapd to rack up an enormous amount of processor resources. For example, yesterday morning, I began an scp session on each server, transferring a directory with a size of 300 GB. This morning I came in and found that the load average was over 500 on each server and that kswapd had a CPU percentage of 198. This has happened repeatedly over the past month. To replicate this, I log on to the first server and scp the files and directories from a file system on the second server. This is reciprocated by running an scp process for files and directories from a file system the first server. Both file systems are on /dev/sdb, an external RAID box, and are over 300 GB. Both servers are on the same Gigabit network. The files transfer at approximately 15 GB an hour until about eight hours into the job when it begins to slow down to about 4-5 GB an hour and the load average increases over 200. It is at this point that kswapd begins to go through the roof while ssh and scp use relatively little resources (according to top and ps wauxg). After I kill the scp job, about 20 hours into it, kswapd continues to use the same amount of resources. I have done this CPU hyper threading enabled and disabled with no improvement. Anyone ever experienced this before? _________________________________________________________________ Is your PC infected? Get a FREE online computer virus scan from McAfee® Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 _______________________________________________ rhn-users mailing list rhn-users@redhat.com https://www.redhat.com/mailman/listinfo/rhn-users </tt>