2002-09-25 17:15:16

by Nathan Neulinger

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Subject: tons of "Warning - running *really* short on DMA buffers" messages - 2.4.19, aic7xxx

Is there anything that can be done about these? Running 2.4.19 on a
piii-800, 512MB, scsi hardware raid.

Seeing tons of these messages (flooding syslogs) whenever I do much I/O
to the drives.

Is there any vm tuning that can be done?

-- Nathan

------------------------------------------------------------
Nathan Neulinger EMail: [email protected]
University of Missouri - Rolla Phone: (573) 341-4841
Computing Services Fax: (573) 341-4216


2002-09-25 17:18:14

by Jens Axboe

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Subject: Re: tons of "Warning - running *really* short on DMA buffers" messages - 2.4.19, aic7xxx

On Wed, Sep 25 2002, Neulinger, Nathan wrote:
> Is there anything that can be done about these? Running 2.4.19 on a
> piii-800, 512MB, scsi hardware raid.
>
> Seeing tons of these messages (flooding syslogs) whenever I do much I/O
> to the drives.
>
> Is there any vm tuning that can be done?

These are "fixed" in 2.4.20-pre so you should try that, if for nothing
else than testing that it works well. The old setup is just fragile.

--
Jens Axboe