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SubjectRe: Problem with ServerWorks CNB20LE and lost interrupts
Date
> Could you please try with kernel option "noapic", you don't have to
> recompile. I'd just like to know wether the problem persists. You might
> find the box sharing a lot of IRQs though.

Many blessings to you!
Adding 'noapic' to the boot command line makes the machines work correctly.
As far as my problem goes this is a fine solution. The afflicted machine
just holds a couple terabytes of nearline storage and has no performance
demands to speak of.

I will replace the ieee1394 hardware and verify that it works. I expect
sucess now.

I have six of these machines and am holding one out as a spare. I will
be happy to continue testing and prodding on that spare unit.

For reference I now have...

# cat /proc/interrupts (eth2 is the afflicted card on the second PCI bus)
CPU0
0: 32594 XT-PIC timer
1: 2 XT-PIC keyboard
2: 0 XT-PIC cascade
5: 1316 XT-PIC eth2
7: 892 XT-PIC aic7xxx
11: 2132 XT-PIC eth0
15: 4 XT-PIC ide1
NMI: 0
LOC: 32554
ERR: 0
MIS: 0

And from dmesg...

Linux version 2.4.17 (root@warehouse) (gcc version 2.95.4 20011006 (Debian prerelease)) #1 SMP Fri Jan 11 02:22:20 CST 2002
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009f400 (usable)
BIOS-e820: 000000000009f400 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e7400 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000000fff0000 (usable)
BIOS-e820: 000000000fff0000 - 000000000ffffc00 (ACPI data)
BIOS-e820: 000000000ffffc00 - 0000000010000000 (ACPI NVS)
BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
found SMP MP-table at 000f7ac0
hm, page 000f7000 reserved twice.
hm, page 000f8000 reserved twice.
hm, page 0009f000 reserved twice.
hm, page 000a0000 reserved twice.
On node 0 totalpages: 65520
zone(0): 4096 pages.
zone(1): 61424 pages.
zone(2): 0 pages.
Intel MultiProcessor Specification v1.4
Virtual Wire compatibility mode.
OEM ID: Gateway Product ID: 7450R APIC at: 0xFEE00000
Processor #1 Pentium(tm) Pro APIC version 17
I/O APIC #0 Version 17 at 0xFEC00000.
I/O APIC #2 Version 17 at 0xFEC01000.
Processors: 1
Kernel command line: auto BOOT_IMAGE=Linux ro root=801 noapic
Initializing CPU#0
Detected 930.434 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 1854.66 BogoMIPS
Memory: 255668k/262080k available (1013k kernel code, 6024k reserved, 307k data, 204k init, 0k highmem)
Dentry-cache hash table entries: 32768 (order: 6, 262144 bytes)
Inode-cache hash table entries: 16384 (order: 5, 131072 bytes)
Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
Buffer-cache hash table entries: 16384 (order: 4, 65536 bytes)
Page-cache hash table entries: 65536 (order: 6, 262144 bytes)
CPU: Before vendor init, caps: 0383fbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
CPU: After vendor init, caps: 0383fbff 00000000 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: After generic, caps: 0383fbff 00000000 00000000 00000000
CPU: Common caps: 0383fbff 00000000 00000000 00000000
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
CPU: Before vendor init, caps: 0383fbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
CPU: After vendor init, caps: 0383fbff 00000000 00000000 00000000
Intel machine check reporting enabled on CPU#0.
CPU: After generic, caps: 0383fbff 00000000 00000000 00000000
CPU: Common caps: 0383fbff 00000000 00000000 00000000
CPU0: Intel Pentium III (Coppermine) stepping 0a
per-CPU timeslice cutoff: 731.26 usecs.
enabled ExtINT on CPU#0
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Error: only one processor found.
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 930.4517 MHz.
..... host bus clock speed is 132.9216 MHz.
cpu: 0, clocks: 1329216, slice: 664608
CPU0<T0:1329216,T1:664608,D:0,S:664608,C:1329216>
Waiting on wait_init_idle (map = 0x0)
All processors have done init_idle
PCI: PCI BIOS revision 2.10 entry at 0xfda1f, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Discovered primary peer bus 01 [IRQ]
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd
pty: 256 Unix98 ptys configured
block: 128 slots per queue, batch=32
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ServerWorks OSB4: IDE controller on PCI bus 00 dev 79
ServerWorks OSB4: chipset revision 0
ServerWorks OSB4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0x1880-0x1887, BIOS settings: hda:pio, hdb:pio
ide1: BM-DMA at 0x1888-0x188f, BIOS settings: hdc:DMA, hdd:pio
hdc: MATSHITA CR-177, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hdc: ATAPI 24X CD-ROM drive, 128kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.12
Floppy drive(s): fd0 is 1.44M
FDC 0 is a National Semiconductor PC87306
loop: loaded (max 8 devices)
eepro100.c:v1.09j-t 9/29/99 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/eepro100.html
eepro100.c: $Revision: 1.36 $ 2000/11/17 Modified by Andrey V. Savochkin <saw@saw.sw.com.sg> and others
eth0: Intel Corp. 82557 [Ethernet Pro 100], 00:C0:9F:04:5E:15, IRQ 11.
Board assembly 000000-000, Physical connectors present: RJ45
Primary interface chip i82555 PHY #1.
General self-test: passed.
Serial sub-system self-test: passed.
Internal registers self-test: passed.
ROM checksum self-test: passed (0x04f4518b).
eth1: Intel Corp. 82557 [Ethernet Pro 100] (#2), 00:C0:9F:04:5E:14, IRQ 10.
Board assembly 000000-000, Physical connectors present: RJ45
Primary interface chip i82555 PHY #1.
General self-test: passed.
Serial sub-system self-test: passed.
Internal registers self-test: passed.
ROM checksum self-test: passed (0x04f4518b).
SCSI subsystem driver Revision: 1.00
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.4
<Adaptec aic7892 Ultra160 SCSI adapter>
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs

Vendor: IBM Model: DDYS-T18350M Rev: S96H
Type: Direct-Access ANSI SCSI revision: 03
(scsi0:A:0): 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
Vendor: SDR Model: GEM318 Rev: 0
Type: Processor ANSI SCSI revision: 02
scsi0:A:0:0: Tagged Queuing enabled. Depth 253
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
SCSI device sda: 35843670 512-byte hdwr sectors (18352 MB)
Partition check:
sda: sda1 sda2 sda3 sda4
Attached scsi generic sg1 at scsi0, channel 0, id 8, lun 0, type 3
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 2048 buckets, 16Kbytes
TCP: Hash tables configured (established 16384 bind 16384)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 204k freed
Adding Swap: 498004k swap-space (priority -1)
3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
01:0d.0: 3Com PCI 3c905 Boomerang 100baseTx at 0x18c0. Vers LK1.1.16
eth2: Setting promiscuous mode.
device eth2 entered promiscuous mode
device eth2 left promiscuous mode

--
Jim Studt, President
The Federated Software Group, Inc.
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