On Friday 19 October 2007 03:21, Paul Mackerras wrote: > Have you measured the performance using a 64kB page size? If so, how > does it compare with the 256kB page size?
I measured the performance of the sequential full-stripe write operations to a RAID-5 array (P values below are in MB per second) using the h/w accelerated RAID-5 driver. Here are the comparative results for the different PAGE_SIZE values: PAGE_SIZE = 4K: P = 66 MBps; PAGE_SIZE = 16K: P = 145 MBps; PAGE_SIZE = 64K: P = 196 MBps; PAGE_SIZE = 256K: P = 217 MBps. > The 64kB page size has the attraction that no binutils changes are > required. That's true, but the additional performance is an attractive thing too. > > Paul. > -- Yuri Tikhonov, Senior Software Engineer Emcraft Systems, www.emcraft.com _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
