Re: IDE performance question

From: Kay Diederichs (Kay.Diederichs@uni-konstanz.de)
Date: Fri Feb 04 2000 - 05:59:56 EST

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Ray L wrote:
<... stuff deleted>
> here's my settings at the moment:
>
> root@stingray# cat /proc/ide/hda/settings
> name value min max mode
> ---- ----- --- --- ----
> bios_cyl 2495 0 65535 rw
> bios_head 255 0 255 rw
> bios_sect 63 0 63 rw
> breada_readahead 4 0 127 rw
> bswap 0 0 1 r
> file_readahead 124 0 2097151 rw
> io_32bit 1 0 3 rw
> keepsettings 1 0 1 rw
> max_kb_per_request 64 1 127 rw
> multcount 8 0 8 rw
> nice1 1 0 1 rw
> nowerr 0 0 1 rw
> pio_mode write-only 0 255 w
> slow 0 0 1 rw
> unmaskirq 1 0 1 rw
> using_dma 1 0 1 rw
>
> any clues appreciated, thanks
>
> --
> -----------------------------------------------------------------------------
> Ray Lehtiniemi (rayl@mail.com) (rayl@optitech.com)

Ray, just a question.

How did you get file_readahead to be 124? It's 0 for me (2.3.39), and
hdparm can
only change breada_readahead.
I've grepped thru the 2.3.39 kernel source, and that variable is
associated w/
BLKFRASET / BLKFRAGET .

Kay

-- Kay Diederichs http://strucbio.biologie.uni-konstanz.de/~kay email: Kay.Diederichs@uni-konstanz.de Tel +49 7531 88 4049 Fax 3183 Fakultaet fuer Biologie, Universitaet Konstanz Box M656, D-78457 Konstanz, Germany

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