hello, I experimented with various block size for file I/O. I experimented with vfat and ext2 filesystem in the pen drive. i also experimented with file write within nand storage; like
date dd if=/dev/zero of=/testfile bs=6144 count=102400 date The maximum preformance of XO nand storage (alone) was ~1.8 mb/sec (jffs2) while the preformance of external usb drive is ~ 3-11 mb /sec (at various block size) i thought 100% cpu use is because direct memory access(DMA) for disk I/O has some problems (or disabled). Also, running XO OS[1] in virtual machine inside Parallels Workstation 2.2 with host OS xp sp2 shows the same problem of 100% cpu use during disk i/o i cant give you a detailed stats. right now as my B2 OS is dead and i'm downloading the latest build. (maybe tomorrow... if you want to hear it) with regards, -bipin [1]olpc-redhat-stream-development-build-239-20070118_1416-devel_ext _______________________________________________ Devel mailing list [email protected] http://mailman.laptop.org/mailman/listinfo/devel
