Alessandro Suardi wrote:
> Alessandro Suardi wrote:
> >
> > Seems we're not moving from the 8.6 MB/s marker :(
> >
> > 2.3.99pre3 idebus=33 36.99 8.60
> > multcount=0
> > 2.3.99pre3 idebus=33 36.89 8.56
> > multcount=8
> >
> [section removed]
hdparm no longer gives drive performance numbers that are equivalent
to 2.2.X kernels on the more recent 2.3.X kernels. hdparm uses disk raw
I/O calls to measure performance and the 2.3.X kernels have had the disk
code re-worked to improve overall system response while heavy disk
I/O is occurring. You need to create your own test say by using the "time"
command and "dd" to read a file of a known size then, calculte the
transfer rate from the time report.
Other recent threads on this mailing list have discussed the reasons for the
changes in the way disk I/O is managed.
Cliff King
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This archive was generated by hypermail 2b29 : Fri Apr 07 2000 - 21:00:09 EST