Dean S. Messing wrote: > > Thanks Rick. It's in "D" state only about 5-10% of the time. Yet > disk writes are occuring (according to the spikes and numbers in > gkrellm) for 1 second or so, every 2 seconds. So that either points > to random number computation or the wait needed to let the new > magnetic orientation 'set'. Not sure. > > Dean > I would expect it to be write buffering. It may be the time it takes to fill the write buffers, and then write them to disk, and/or write buffering on the drive.
I know how to turn off write buffering on a mounted partition, but not when writing directly to a drive. You can probably turn off drive write buffering using hdparm. You may be able to improve the time by tweaking the size of the writes to the drive. Take a look at the "USB I/O performance" thread. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!
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