Hi, We have installed RHEL AS 3 on our new server (HP Proliant DL 760 G2 - 4 Xeon CPUs 2.7GHz/2MB and 24 GM RAM). I see 50% of CPU being used for "system" calls even though the server is doing nothing. I guess, it has to do with some kernel parameters. Can anybody tell me where should I start from to troubleshoot/tune this issue? A typical vmstat output looks like this.. procs memory swap io system cpu r b swpd free buff cache si so bi bo in cs us sy id wa 1 1 5156 51736 11956 23781184 0 0 50 80 27 65 3 43 46 7 1 2 5156 51744 11700 23781440 0 0 0 16 207 611 5 40 55 0 1 0 5156 51732 11700 23781440 0 0 0 0 123 383 2 47 51 0 1 0 5156 52504 11732 23781440 0 0 0 40 142 351 2 40 56 2 1 0 5156 52504 11732 23781440 0 0 0 0 120 266 2 45 53 0 thanks nagarjuna **************** CAUTION - Disclaimer ***************** This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system. ***INFOSYS******** End of Disclaimer ********INFOSYS*** -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subjecthttps://www.redhat.com/mailman/listinfo/redhat-list