ALI M15x3 chipset support (EXPERIMENTAL) Migration...

[Peter Steiner]

Andre Hedrick <andre en suse.com> wrote:

>IBM-DJNA-352030, 19470MB w/1966kB Cache, CHS=2482/255/63, (U)DMA
>
>This is an ATA-66 drive that has been cripped to ATA-2 and corrected to
>ATA-33.  This can be fixed like I fixed the cmd646 code.

What does "cripped to" mean? I bought it as an ATA-66 drive.

Anyway, 2.3.40 now shows:

|Uniform Multi-Platform E-IDE driver Revision: 6.30
|ALI15X3: IDE controller on PCI bus 00 dev 78
|ALI15X3: not 100% native mode: will probe irqs later
|    ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:pio
|ALI15X3: simplex device:  DMA disabled
|ide1: ALI15X3 Bus-Master DMA disabled (BIOS)
|hda: IBM-DJNA-352030, ATA DISK drive
|ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
|hda: IBM-DJNA-352030, 19470MB w/1966kB Cache, CHS=2482/255/63, UDMA(33)

|        -------Sequential Output-------- ---Sequential Input-- --Random--
|        -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
|    100  3200 99.5 13017 23.0  4715 11.0  2861 90.5 10019 10.0 125.7  2.9

|/dev/hda:
| Timing buffer-cache reads:   64 MB in  2.63 seconds =24.33 MB/sec
| Timing buffered disk reads:  32 MB in  2.23 seconds =14.35 MB/sec
|Hmm.. suspicious results: probably not enough free memory for a proper test.

This happens with latest 2.3.x kernels (I don't know exactly when it started).

|# free
|             total       used       free     shared    buffers     cached
|Mem:         62504      57340       5164          0      46640       2852
|-/+ buffers/cache:       7848      54656

I don't think there's not enough memory free. More probably the buffer-cache
hash table is too small (1024 buckets).

Peter 
-- 
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