High load - lost network

[Christer Solskogen]

Wojciech Puchar wrote:
> i don't think it's interrupt sharing problems.
> 
> anyway - turn on MSI interrupts if your hardware can.
> 

I dont seem so (unless i interpret the output of pciconf wrong:

[root at caius ~]# pciconf -lc
hostb0 at pci0:0:0:0:      class=0x060000 card=0x342f8086 chip=0x25788086
rev=0x02 hdr=0x00
    cap 09[e4] = vendor (length 6) Intel cap 3 version 1
pcib1 at pci0:0:3:0:       class=0x060400 card=0x00000000 chip=0x257b8086
rev=0x02 hdr=0x01
pcib2 at pci0:0:28:0:      class=0x060400 card=0x00000000 chip=0x25ae8086
rev=0x02 hdr=0x01
    cap 07[50] = PCI-X 64-bit bridge supports
uhci0 at pci0:0:29:0:      class=0x0c0300 card=0x342f8086 chip=0x25a98086
rev=0x02 hdr=0x00
uhci1 at pci0:0:29:1:      class=0x0c0300 card=0x342f8086 chip=0x25aa8086
rev=0x02 hdr=0x00
none0 at pci0:0:29:4:      class=0x088000 card=0x342f8086 chip=0x25ab8086
rev=0x02 hdr=0x00
ioapic0 at pci0:0:29:5:    class=0x080020 card=0x342f8086 chip=0x25ac8086
rev=0x02 hdr=0x00
    cap 07[50] = PCI-X 64-bit supports 512 burst read, 1 split transaction
ehci0 at pci0:0:29:7:      class=0x0c0320 card=0x342f8086 chip=0x25ad8086
rev=0x02 hdr=0x00
    cap 01[50] = powerspec 2  supports D0 D3  current D0
    cap 0a[58] = EHCI Debug Port at offset 0x80 in map 0x14
pcib3 at pci0:0:30:0:      class=0x060400 card=0x00000000 chip=0x244e8086
rev=0x0a hdr=0x01
isab0 at pci0:0:31:0:      class=0x060100 card=0x00000000 chip=0x25a18086
rev=0x02 hdr=0x00
atapci0 at pci0:0:31:1:    class=0x01018a card=0x342f8086 chip=0x25a28086
rev=0x02 hdr=0x00
atapci1 at pci0:0:31:2:    class=0x01048f card=0x34308086 chip=0x25b08086
rev=0x02 hdr=0x00
none1 at pci0:0:31:3:      class=0x0c0500 card=0x342f8086 chip=0x25a48086
rev=0x02 hdr=0x00
em0 at pci0:1:1:0: class=0x020000 card=0x342f8086 chip=0x10758086 rev=0x00
hdr=0x00
    cap 01[dc] = powerspec 2  supports D0 D3  current D0
vgapci0 at pci0:3:0:0:     class=0x030000 card=0x342f8086 chip=0x47521002
rev=0x27 hdr=0x00
    cap 01[5c] = powerspec 2  supports D0 D1 D2 D3  current D0
fxp0 at pci0:3:1:0:        class=0x020000 card=0x342f8086 chip=0x12298086
rev=0x10 hdr=0x00
    cap 01[dc] = powerspec 2  supports D0 D1 D2 D3  current D0


> check if producing high load on atapci1 make problem worse or not.
> 

During "dd if=/dev/random of=bigfile bs=500k count=50000" (about 200
seconds) made the network unresponsive again. Same symptom as I got when
running make buildworld.

-- 
chs