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nfs problem, might be deep, but more likely i'm a bonehead

To: tech@openbsd.org
Subject: nfs problem, might be deep, but more likely i'm a bonehead
From: simonlok@mac.com
Date: Wed, 2 Jan 2002 10:56:03 -0500

The machine is a Pentium III, 1.0 GHz, SuperMicro 370SSE
motherboard (815E), Crucial PC133, 2x256MB RAM.  I'm
using onboard ethernet ports.  I've got obsd 3.0 -stable running
on it.  I've put the dmesg inline into this email at the bottom.

So, here is the output of mount:

/dev/wd0a on / type ffs (local, softdep)
/dev/wd0d on /usr type ffs (local, noatime, softdep)
/dev/wd0e on /var type ffs (local, noatime, softdep)
/dev/wd0f on /tmp type ffs (local, noatime, softdep)
/dev/sd0a on /export type ffs (NFS exported, local, noatime, with 
quotas, softdep)
amd:11258 on /home type nfs (v2, udp, intr, timeo=100, retrans=100)
localhost:/export on /mnt type nfs (v3, udp, timeo=100)

I download a copy of bonnie++ from http://www.coker.com.au/bonnie++/

I change directory in /export (the local mount) and run bonnie, 
spectacular
results:

Version 1.02a       ------Sequential Output------ --Sequential Input- 
--Random-
                     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- 
--Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  
/sec %CP
localhost      300M 18860  99 36062  34  8183   3 26431  97 39553  12 
109.6   0
                     ------Sequential Create------ --------Random 
Create--------
                     -Create-- --Read--- -Delete-- -Create-- --Read--- 
-Delete--
               files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  
/sec %CP
                  16   497  99 +++++ +++ 10410  89   490  99   489  99  
1276  97
localhost,300M,18860,99,36062,34,8183,3,26431,97,39553,12,109.6,0,16,497,99,
+++++,+++,10410,89,490,99,489,99,1276,97

I change directory into /mnt to see how the loopback NFS performance 
looks like
and run bonnie++... the machine just hangs.  The console doesn't drop to 
debug
mode, if you hit enter, the command prompt returns, but if you type a 
command
hit enter (like cd /tmp) and hit enter, the command prompt hangs and 
doesn't
come back.  Same behavior with remote consoles on a different machine.

So I figured, got to be a hardware problem, right?  I ran some torture 
testing
programs that I wrote along with some others that I found on freshmeat
that test CPU and memory, the machine checks out okay.  No crash, no 
stalls.
Bonnie, which is a heavy disk testing program runs fine on locally 
mounted
volumes, but over NFS, it blows it up.  I tried mounting the NFS volume 
from
a different obsd machine, it mounts, I can read and write, and 
everything is
normal, but if I run bonnie, same results, hang.  So then I tried the 
same thing
with new hardware, this time a P4, Intel 850GB motherboard 512MB 
(4x128MB)
of RIMMs... same result.  Hang.

What am I doing wrong?  Any advice would be greatly appreciated.  Thanks
in advance.


OpenBSD 3.0-stable (LOKTEK) #0: Sun Dec 30 11:04:10 GMT 2001
     scl@noname:/home/scl/src/sys/arch/i386/compile/LOKTEK
cpu0: Intel Pentium III (Coppermine) ("GenuineIntel" 686-class) 1.01 GHz
cpu0: 
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SYS,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,
FXSR,SIMD
real mem  = 535408640 (522860K)
avail mem = 492568576 (481024K)
using 5689 buffers containing 26873856 bytes (26244K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 11/13/01, BIOS32 rev. 0 @ 
0xfdb80
apm0 at bios0: Power Management spec V1.2
apm0: AC on, battery charge unknown
pcibios0 at bios0: rev. 2.1 @ 0xf0000/0x10000
pcibios0: PCI IRQ Routing Table rev. 1.0 @ 0xf37c0/224 (12 entries)
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82801AA LPC" rev 0x00)
pcibios0: PCI bus #1 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1000
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82815 Hub" rev 0x02: rng active, 
8Kb/sec
vga1 at pci0 dev 2 function 0 "Intel 82815 Graphics" rev 0x02
wsdisplay0 at vga1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
ppb0 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0x11
pci1 at ppb0 bus 1
twe0 at pci1 dev 0 function 0 "3ware Escalade IDE RAID" rev 0x12: irq 11
twe0: Escalade V5.7
scsibus0 at twe0: 16 targets
sd0 at scsibus0 targ 0 lun 0: <3WARE, Host drive  #00, > SCSI2 0/direct 
fixed
sd0: 95395MB, 12161 cyl, 255 head, 63 sec, 512 bytes/sec, 195369520 sec 
total
stray interrupt 7
fxp0 at pci1 dev 4 function 0 "Intel 82557" rev 0x08: irq 11, address 
00:30:48:41:0d:5c
inphy0 at fxp0 phy 1: i82555 10/100 media interface, rev. 4
fxp1 at pci1 dev 8 function 0 "Intel 82562" rev 0x03: irq 11, address 
00:30:48:41:0d:5d
inphy1 at fxp1 phy 1: i82562EM 10/100 media interface, rev. 0
pcib0 at pci0 dev 31 function 0 "Intel 82801BA LPC" rev 0x11
pciide0 at pci0 dev 31 function 1 "Intel 82801BA IDE" rev 0x11: DMA, 
channel 0 wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 1: <QUANTUM FIREBALL1080A>
wd0: 8-sector PIO, LBA, 1039MB, 2112 cyl, 16 head, 63 sec, 2128896 
sectors
wd0(pciide0:0:1): using PIO mode 4, DMA mode 2
atapiscsi0 at pciide0 channel 1 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <MATSHITA, CD-ROM CR-177, 7T03> SCSI0 
5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
uhci0 at pci0 dev 31 function 2 "Intel 82801BA USB" rev 0x11: irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: vendor 0x0000 UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
"Intel 82801BA SMBus" rev 0x11 at pci0 dev 31 function 3 not configured
uhci1 at pci0 dev 31 function 4 "Intel 82801BA USB2" rev 0x11: irq 10
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: vendor 0x0000 UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pmsi0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pmsi0 mux 0
pcppi0 at isa0 port 0x61
sysbeep0 at pcppi0
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask cc40 netmask cc40 ttymask dc42
pctr: 686-class user-level performance counters enabled
mtrr: Pentium Pro MTRR support
dkcsum: sd0 matched BIOS disk 81
dkcsum: wd0 matched BIOS disk 80
root on wd0a
rootdev=0x0 rrootdev=0x300 rawdev=0x302

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  - From: bks10@cornell.edu

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