Matthias Schuendehuette <[EMAIL PROTECTED]> writes:
> I consider it unnecessary to use WriteCache if TaggedQueuing is enabled
> and working.
> (The performace gain of WriteCache and TaggedQueuing is more or less the
> same, the combination of both adds less than 10% of performance and you
> shouldn't use Soft Updates any more)
Write cacheing is automatically enabled if tagged queueing is enabled
and supported by the disk, so I doubt you're seeing any improvement at
all.
/* enable write caching if allowed and not default on device */
if (ata_wc || (ata_tags && ad_tagsupported(adp))) {
if (ata_command(atadev, ATA_C_SETFEATURES,
0, 0, ATA_C_F_ENAB_WCACHE, ATA_WAIT_INTR))
ata_prtdev(atadev, "enabling write cache failed\n");
}
DES
--
Dag-Erling Smorgrav - [EMAIL PROTECTED]
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