Anders Widman <[EMAIL PROTECTED]> writes: > Even with 'heavy' fragmentation this is quite low. A quick benchmark > of my 5400rpm 80GB disk gave me an average on 30MB/s. However, when > simulating large fragmentation (10 000+ fragments on a 1GB file) I get > about 2MB/s. > > Is DMA, unmask IRQ, read ahead and similar activated?
SCSI here, with aic7xxx 5.x and 6.x driver, no particular tuning in place except that I told the AHA2940 to negotiate Ultra-Wide, it has braindead default settings (negotiates 10 MXfers/s only, no Ultra), so we can safely assume it did DMA. -- Matthias Andree GPG encrypted mail welcome, unless it's unsolicited commercial email.
