Re: 2.4: mylex and > 2GB RAM

From: Per Andreas Buer
Date: Mon Dec 08 2003 - 15:16:26 EST


William Lee Irwin III <wli@xxxxxxxxxxxxxx> writes:

> If your memory ended at 2GB and the driver had 31-bit DMA, it may have
> decided to use unconstrained allocations. Then, when you added more RAM,
> it was forced to ask for <= 896MB, which made it copy to buffers that are
> actually below 896MB most of the time.

But this would reduce the throuput only a few percent, right? My system
slows down from writing ~ 100MB/s to maybe 50KB/s.

--
Per Andreas Buer
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