CompuServe Messages

Larry, Unless they've changed something recently, the use of MaxTransfer appears to be a limiting parameter rather than a performance upgrade parameter. The reason I say this is that if you don't include that parameter in your mountlist for the FFS drive, you get no difference in performance (using diskperf) than if you had it set at a number above 32768. If you set it at a lower number, (such as 4096), then the diskperf figures are the same for buffer sizes of 4096, 8192 and 32767. Getting away from diskperf, and into the real world where program sizes are easily in the 100K category, I'm not so sure that MaxTransfer would do you much good there either since the loader seems to be the slow down. I do suspect that MaxTransfer can eat up memory, at least during disk i/o, since if you ask for 32K bytes at once…they have to be buffered somewhere. Perhaps a balance between the buffers, maxtransfer and priority parameters could be achieved to maximize performance. Don