This is crap:

avg-cpu:  %user   %nice    %sys %iowait   %idle

           0.00    0.00   27.45   72.55    0.00

Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn

sda               0.00         0.00         0.00          0          0

sdb               0.00         0.00         0.00          0          0

sdc               0.00         0.00         0.00          0          0

sdd               0.00         0.00         0.00          0          0

sde             670.14     42901.80         0.00     214080          0

sdf             662.12     42375.95         0.00     211456          0

sdg             266.73     17070.94         0.00      85184          0

sdh             268.74     17199.20         0.00      85824          0

Two bad things going on here. First, the Sil3114 that provides the four SATA-I ports on my new motherboard is a PCI device, giving a maximum throughput of 133MB/sec (theoretical). It's getting 119MB/sec here, which is actually very good for PCI.

Second, although I'm running the exact same test on all four drives, the first two are giving two-and-a-half times the performance, presumably due to some sort of interrupt or DMA prioritisation.

So far this time it hasn't actually crapped out on me with a flood of spurious errors. We'll see how long that lasts.

Oh yes. I now have eight SATA drives in my new computer, a total of 1.8 terabytes of storage. This wasn't the original plan, and in fact is making things rather difficult, but I couldn't get things to work reliably in the old system.

Meh.

Posted by: Pixy Misa at 12:21 PM | Comments (3) | Add Comment | Trackbacks (Suck)