If this is a different mainboard, then it will probably have different characteristics - you probably need to ask your supplier about it ... James Pearson Bruno Sousa wrote: > Hi there, > I did the question regarding multiple processors, because it seems like i > will be getting na HP ML 350 with 2 Intel Xeon with 4 or 8gb of memory. > But will I be able to use 4gb or more? > > Thanks, > Bruno Sousa > > -----Mensagem original----- > De: centos-bounces at centos.org [mailto:centos-bounces at centos.org] Em nome de > James Pearson > Enviada: quinta-feira, 22 de Junho de 2006 17:18 > Para: CentOS mailing list > Assunto: Re: [CentOS] x86 uniprocessor 4GB memory > > >>Hi there, >> >>It seems like the bios of this machine doesn't have any type of >>configuration regarding the memory mapping. >>I'm already using the kernel-hugemem , but the problem remains. >>What else can be done? >> >>By the way, if the machine had more than one cpu, the problem would > > remain? > >>Best regards, >>Bruno Sousa >> >>-----Mensagem original----- >>De: centos-bounces at centos.org [mailto:centos-bounces at centos.org] Em nome > > de > >>James Pearson >>Enviada: quinta-feira, 22 de Junho de 2006 15:54 >>Para: CentOS mailing list >>Assunto: Re: [CentOS] x86 uniprocessor 4GB memory >> >>Bruno Sousa wrote: >> >> >>>Hi there, >>> >>>I'm currently using CentOS 4.3 (Server edition) in a HP DC 5100 with the >>>IntelR 915GV chipset, powered by a PIV 3.0GHZ. >>> >>>Now I'm facing a problem, with memory. >>> >>>I got myself 4GB of memory, the system bios detects it correctly, but in >>>Linux can only see around 3.5gb memory. With the default kernel-smp (I use >>>hyperthread) or with kernel-hugemem , I have the same results. >>> >>>Is there any way to workaround this issue? >> >> >>It is probably the 4Gb memory hole issue - various 'things' reserve >>memory below 4GB so hiding the real memory from the OS. >> >>Your BIOS may have a mapping option to map some of this hidden real >>memory to above 4Gb - however, you need to use a hugemem kernel to >>access this memory. > > > Having multiple CPUs would make no difference. The hugemem kernel would > only see this memory if the BIOS could map it to above 4Gb - if the BIOS > can't, then there is nothing above 4Gb for the hugemem kernel to see. > > A newer version of the BIOS _might_ have added this support ... > > James Pearson > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > >