Jon Nelson wrote:
MCP55, built-in.
cat /proc/interrupts:
CPU0 CPU1
0: 67908 136036611 IO-APIC-edge timer
1: 0 10 IO-APIC-edge i8042
2: 0 0 XT-PIC-XT cascade
5: 8325169 15373702 IO-APIC-fasteoi sata_nv, ehci_hcd:usb1
7: 0 0 IO-APIC-fasteoi ohci_hcd:usb2
8: 0 0 IO-APIC-edge rtc
9: 0 0 IO-APIC-edge acpi
10: 3722699 7890387 IO-APIC-fasteoi sata_nv
11: 0 0 IO-APIC-fasteoi sata_nv
14: 1339948 1448257 IO-APIC-edge libata
15: 0 0 IO-APIC-edge libata
4345: 62529065 1494 PCI-MSI-edge eth1
4346: 8 60190576 PCI-MSI-edge eth0
NMI: 0 0
LOC: 136110735 136110816
ERR: 0
Do a test of "dd if=/dev/sdb4 of=/dev/null bs=64k" on 1 then 2 and the 3
disks while watching "vmstat 1" and see how it scales.
Start with 1, then 2, then 3. Then back to 2, then back to 1. Then done.
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
1 1 392 9760 704136 17656 0 0 67968 16 1985 2578 0 24 48 29
1 1 392 9384 704632 17636 0 0 74900 0 1704 2540 0 26 45 29
2 1 392 9992 703148 18036 0 0 74516 0 1750 2581 0 25 46 29
2 0 392 9156 704096 18100 0 0 153856 0 4193 8686 0 55 25 20
2 1 392 9240 704328 17892 0 0 147606 32 3990 8608 0 58 20 23
3 0 392 9136 704444 17704 0 0 143434 52 3596 8087 0 52 17 30
1 2 392 9492 703880 18068 0 0 136604 12 3438 7205 0 50 23 26
1 2 392 9552 704272 17588 0 0 153984 0 3837 8461 0 57 21 21
1 1 392 9812 704160 17368 0 0 149399 0 3760 8121 0 54 20 26
2 1 392 9296 704464 17376 0 0 133546 32 3377 7822 0 52 18 30
3 1 392 9240 704040 17796 0 0 152696 16 3811 7704 0 57 16 28
3 3 392 10020 703296 17428 0 0 196994 36 5028 6354 0 75 1 23
3 0 392 9152 704172 17332 0 0 197809 28 5030 5603 0 74 0 25
2 2 392 9232 704440 17324 0 0 203131 0 5141 6030 0 75 0 24
3 2 392 9680 704112 16988 0 0 201973 0 5105 5601 1 78 0 22
2 1 400 10216 703656 17032 0 8 189088 52 4634 5853 0 69 0 31
3 1 400 9112 704664 17004 0 0 188936 44 4721 5495 0 70 2 28
1 4 400 10080 704132 17008 0 0 200736 4 5000 6037 0 78 1 21
3 2 400 9212 705012 16800 0 0 146072 40 3724 6490 0 54 16 30
1 1 400 9724 705988 17328 0 0 108857 32 2707 6034 0 39 9 51
1 1 400 9164 706800 17436 0 0 144175 0 3580 8223 0 52 21 26
1 2 400 10044 707708 17500 0 0 73452 0 1662 2560 0 26 46 27
That is a good built-in controller then, the scaling is almost perfect,
predicted would be 74, 158, 222 vs. 74, 154, 205.
Roger
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