Messages in this thread | | | From | (Jens-Uwe Mager) | Subject | Re: Performance problems with Linux file serving. in recent 2.4 kernels | Date | 21 Jul 2000 20:09:01 GMT |
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On Fri, 21 Jul 2000 09:12:07 GMT, J. Robert von Behren <jrvb@cs.berkeley.edu> wrote:
>Since the clients are reading and writing the same 30MB area of the disk >over and over, clients whose files are in the middle of the disk arm >sweep will be favored by the elevator scheduling, b/c they can be >serviced both coming and going. The clients with slightly slower server >response times (due to the placement of files on disk) will have to wait >longer before sending a subsequent request. In the mean time, the other >clients will have been able to issue more reuqests, so by the time the >slower client gets its next request in, it is likely that it will be at >the end of the elevator loop, and hence be delayed further...
The LanTest application does set up one test file per client - so there are multiple 20MB areas.
-- Jens-Uwe Mager <pgp-mailto:62CFDB25>
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