From mboxrd@z Thu Jan 1 00:00:00 1970 From: NucleoDyne Systems Subject: Re: Raw IO with High mem support. Date: Wed, 12 Nov 2003 07:26:05 -0800 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <3FB2510D.1010108@nucleodyne.com> References: Reply-To: nucleon@nucleodyne.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from sccrmhc12.comcast.net ([204.127.202.56]:1932 "EHLO sccrmhc12.comcast.net") by vger.kernel.org with ESMTP id S263639AbTKLPRQ (ORCPT ); Wed, 12 Nov 2003 10:17:16 -0500 List-Id: linux-scsi@vger.kernel.org To: "Nayak, Samdeep" Cc: linux-scsi@vger.kernel.org Hi, What kind of devices you have on the system? Kallol Nayak, Samdeep wrote: >Hi, > >I am running into a strange performance issue after I upgraded my system >ram to 2Gig. Earlier my system had 896MB and I was getting decent >performance with character raw IO. However after rebuilding the kernel >to support 4Gig Memory with 3Gig virtual memory on 2.4.X kernel, the >performance seems to drop drastically. Physically removing the RAM got >me back to the original performance. I am still trying to analyze this >and any pointers to High Memory support with raw device would be greatly >appreciated. > >Thanks in advance, >-Samdeep > > >- >To unsubscribe from this list: send the line "unsubscribe linux-scsi" in >the body of a message to majordomo@vger.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html > > > -- www.nucleodyne.com nucleon@nucleodyne.com Phone: 408-718-8164