A Server that is using uniprocessor kernel will only recognize 4GB RAM This is how a server which was not using smp module showed # more /proc/meminfo MemTotal: 3107748 kB MemFree: 2550724 kB Buffers: 195056 kB Cached: 147660 kB SwapCached: 0 kB Active: 295124 kB Inactive: 199776 kB HighTotal: 2227872 kB HighFree: 1934336 kB LowTotal: 879876 kB LowFree: 616388 kB SwapTotal: 0 kB SwapFree: 0 kB Dirty: 732 kB Writeback: 0 kB Mapped: 221648 kB Slab: 40356 kB CommitLimit: 1553872 kB Committed_AS: 866636 kB PageTables: 2920 kB VmallocTotal: 106488 kB VmallocUsed: 5816 kB VmallocChunk: 99928 kB HugePages_Total: 0 HugePages_Free: 0 Hugepagesize: 4096 kB You will have to update the kernel. up2date-nox -uf kernel-smp Thx, Pankaj Govil -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Steve Phillips Sent: Tuesday, October 09, 2007 1:07 AM To: tony.delov@xxxxxxxxxxxxxxx; General Red Hat Linux discussion list Subject: Re: 8gb memory on Redhat AS 2.1 t wrote: > Hi All, > Im running Redhat AS 2.1 on an IBM HS20 Blade Server. > I have just upgraded the ram to 8Gb. > The 8Gb memory shows up in the bios but the linux system only shows 4gb? > > Is there any special way to get the extra memory recognized in Redhat > AS 2.1? > > I have a server that's running Redhat ES 2.1 that has 8gb of ram. > That system has a custom kernel and is running on different hardware, > I'm wondering if that would be the reason why? Its been a while since I compiled a kernel, but I believe there used to be a 'bigmem' option that needed to be enabled if you had more than 4Gig of RAM in the box. I dont recall which kernel version this was in - try pulling down a 2.4.x kernel and running the make xconfig (or whatever) on a box and seeing what options there are and comparing it possibly to your custom kernel's 'make xconfig' ? -- Steve. -- Steve. -- 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
