Thomas Bogendoerfer wrote:
I'm not really buying into hdparm cached time numbers (-T). -t is at least usefull to see, that the speed between disk drive and controller/driver is ok. There could be a regression, but I'd like to see numbers from more meaningfull benchmarks or even better real applications. Thomas.
What would you suggest? fio? bonnie++? If you are aware of any benchmarks that illustrate cache performance specifically, I can try them out.
Another problem that I see, which looks more serious, is that the SCSI subsystem has turned off write cache for the hdd, I have no idea why. I tried using the older Adaptec SCSI driver in the kernel but it made no difference.
Cheers, Jimmy