Re: 2.4.9-ac10 IDE access slows as uptime increases

Alan Cox (
Sat, 29 Sep 2001 15:33:17 +0100 (BST)

> I've been noticing this for months, and thought I was crazy. But I
> just verified it.
> I ran a program that's a GUI app/front-end to a data base, on the
> local drives. It took seconds to access a record.

Is the data base doing I/O directly to a block device and not using
O_DIRECT for one question

Second question is what is in your IDE logs. The IDE layer will change
down speeds when it hits a repeated problem (eg a DMA timeout) so if
need be will switch back to PIO or to MWDMA.

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