Hi, Thanks for your responses. Yes my system is connected to the emc storage . I use emulex HBA . I have checked the messages file , there exists following messages: Nov 13 20:39:47 tanidw1 kernel: !lpfc0:0410:INe:Cannot find virtual addr for mapped buf on ring 0 Data x411ACC00 x x Nov 13 20:48:19 tanidw1 kernel: !lpfc0:0410:INe:Cannot find virtual addr for mapped buf on ring 0 Data x411AC800 x x Nov 13 20:57:11 tanidw1 kernel: !lpfc0:0410:INe:Cannot find virtual addr for mapped buf on ring 0 Data x411AC400 x x Nov 13 21:04:54 tanidw1 kernel: !lpfc0:0410:INe:Cannot find virtual addr for mapped buf on ring 0 Data x411AC000 x x Do these messages indicate a problem? Kind Regards, Tolga Evren -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Ed Wilts Sent: Friday, November 11, 2005 2:34 AM To: General Red Hat Linux discussion list Subject: Re: what is lpfc_do_dpc_0? On Thu, Nov 10, 2005 at 05:47:50PM +0200, Tolga Evren wrote: > This is redhat 2.1 . > > I see this process in top consuming cpu. What does this do? lpfc might be related to an Emulex LP fibre adapter. Are you SAN connected? RHEL 2.1 is fairly old but you might see if your fibre drivers and firmware are current. Also, check for any lpfc-related events in /var/log/messages .../Ed -- Ed Wilts, RHCE Mounds View, MN, USA mailto:ewilts@xxxxxxxxxx Member #1, Red Hat Community Ambassador Program -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list