Block Sizes
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Karen Shaeffer shaeffer at neuralscape.comThu Oct 31 10:11:26 PST 2002
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On Thu, Oct 31, 2002 at 09:11:03AM -0800, Greg Lindahl wrote: > On Thu, Oct 31, 2002 at 11:36:54AM -0500, Robert G. Brown wrote: > > > I think you'll want to create your partitions with -T largefile4, 4K > > blocksize (the maximum, which I recall is also the kernel page size > > which is probably WHY it is the maximum) which allocates one inode for > > every 4 MB of disk. > > The question was about making I/O faster. What you suggest wastes less > disk space on inodes, but won't speed up anything because ext2's usual > blocksize is 4K. Larger blocks doesn't necessarily improve things, it > really depends on whether their I/O is linear or random or whatever. Using a RAID 5 disk array with n disks will result in an (n-1)X I/O performance gain. With the price of disks today, it seems like a viable option for folks who need the speed. cheers, Karen -- Karen Shaeffer Neuralscape; Santa Cruz, Ca. 95060 shaeffer at neuralscape.com http://www.neuralscape.com
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