Re: bad performance with SSD since kernel version 2.6.32

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On Sun, 21 Feb 2010 11:22:59 -0600
Robert Hancock <hancockrwd@xxxxxxxxx> wrote:

> My next suggestion would be to try changing this line in drivers/ata/ahci.c:
> 
>                pi.flags |= ATA_FLAG_NCQ | ATA_FLAG_FPDMA_AA;
> 
> to
> 
>                pi.flags |= ATA_FLAG_NCQ;

Same result than before:

# dd if=/dev/sda of=/dev/null bs=1M skip=600 count=300
300+0 records in
300+0 records out
314572800 bytes (315 MB) copied, 4.2124 s, 74.7 MB/s

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