elvtune with 2.6 kernels (under FC3)

2005-07-25 Thread Gaspar Bakos
Hi, I am cc-ing this to the kernel list, a i have the suspicion that it may be a kernel related feature. -- I noticed that elvtune does not work on FC3 with a 2.6.12.3 (self-compiled, pristine) kernel. I also tried it with other 2.6.* kernels. elvtune /dev/sde ioctl get: Invalid argu

Re: kernel page size explanation

2005-07-23 Thread Gaspar Bakos
Hi, Jesper, RE: > > 2. how can one tune it (for 2.6.*)? > > For some archs the page size can be set at compile-time with > CONFIG_PAGE_SIZE_4KB, CONFIG_PAGE_SIZE_8KB etc - mips is an example of > such an arch (also take a look at CONFIG_HUGETLB_PAGE and friends). OK, now i figured it out. On AMD

kernel page size explanation

2005-07-21 Thread Gaspar Bakos
Hi, Sorry for this nursery-school question. Could someone briefly explain me : 1. what is the kernel page size (any _useful_ pointer on the web is fine), 2. how can one tune it (for 2.6.*)? 3. what kind of effect does it have on system performance, if it is tuneable, and if it worth changing this