Cheers, Andreas On 2011-04-03, at 8:56 AM, Eric Sandeen <sandeen@xxxxxxxxxx> wrote: > On 4/3/11 11:52 AM, Zeev Tarantov wrote: >> On Sun, Apr 3, 2011 at 21:40, Eric Sandeen <sandeen@xxxxxxxxxx> wrote: > > ... > >>> What does >>> >>> # blockdev --getiomin --getioopt /dev/<yourdevice> >>> >>> say for your device? >> >> get logical block (sector) size: 4096 >> get physical block (sector) size: 4096 >> get minimum I/O size: 4096 >> get optimal I/O size: 4096 >> get alignment offset in bytes: 0 >> get max sectors per request: 255 >> get blocksize: 4096 >> get readahead: 256 >> >>> The device may be reporting odd values, but mke2fs probably >>> should be smart enough not to set block-sized stripe unit and width... >> >> If the filesystem created with the default options is slow or has >> higher cpu usage, it should be changed. > > I agree. For actual striped storage, this makes it faster, but this > case is a problem; block-sized stripe width is never going to be good. > What device is this, exactly? > > -Eric (losing my free airport wifi in about 8 minutes, so I may have > to continue this later...!) > >>> -Eric >> >> -Z.T. > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
