福原です． K.Moriyama wrote: > Vine 3.0 の 最大認識メモリサイズですが、上限は 900M になって > いるのでしょうか? 1024M 搭載しているのですが、 free での表示は > [ 902780 ]となります。古いFAQを見ると 2.6 のデフォルトカーネル > では 900M にリミットが有ると記述されているので 3.0 も同じかと > 思い確認したくお願いします。 > > 使用カーネル : kernel-smp-2.4.26-0vl16.athlon.rpm 一週間ほど前に同じ話がありました．2.4.26-0vl16 では i586-smp, i686, i686-smp 用のみ HIGHMEM が有効になっているようです． /usr/src/linux/Documentation/Configure.help より CONFIG_NOHIGHMEM Linux can use up to 64 Gigabytes of physical memory on x86 systems. However, the address space of 32-bit x86 processors is only 4 Gigabytes large. That means that, if you have a large amount of physical memory, not all of it can be "permanently mapped" by the kernel. The physical memory that's not permanently mapped is called "high memory". If you are compiling a kernel which will never run on a machine with more than 960 megabytes of total physical RAM, answer "off" here (default choice and suitable for most users). This will result in a "3GB/1GB" split: 3GB are mapped so that each process sees a 3GB virtual memory space and the remaining part of the 4GB virtual memory space is used by the kernel to permanently map as much physical memory as possible. If the machine has between 1 and 4 Gigabytes physical RAM, then answer "4GB" here. If more than 4 Gigabytes is used then answer "64GB" here. This selection turns Intel PAE (Physical Address Extension) mode on. PAE implements 3-level paging on IA32 processors. PAE is fully supported by Linux, PAE mode is implemented on all recent Intel processors (Pentium Pro and better). NOTE: If you say "64GB" here, then the kernel will not boot on CPUs that don't support PAE! The actual amount of total physical memory will either be auto detected or can be forced by using a kernel command line option such as "mem=256M". (Try "man bootparam" or see the documentation of your boot loader (grub, lilo or loadlin) about how to pass options to the kernel at boot time.) If unsure, say "off". /usr/src/linux/Documentation/Configure.help より：ここまで [vine-users:067758] Re: HIGHMEMがOFF > i686 用のカーネルを使う手はあります．動作はすると思います． > Athlon 用に最適化されていないので多少遅いかもしれませんが， > 多くの場合目で見える差は出ないと思います． Athlon 用にしたいのであれば，HIGHMEM を有効にしたカーネルを 自分でコンパイルする方法があります． -- 福原 <makoto@xxxxxxxxxxxxxxxxxx>