Very slow as

	Hello,

This week I tried to recompile current and noticed it took much longer
than usual. System accounting showed 'as' using up disproportionally large
amounts of time. ( up to 30 minutes for 200k of assembly on a 533 alpha
with sufficient memory;
ieee.s from /usr/src/gnu/usr.bin/binutils/binutils/ieee.c)

So i installed the sep 2 snapshot to eliminate local mishaps...
no change.

Therefore I compiled a profiled 'as' in the hope to see what was taking
all this time. So much to my amazement the profiled 'as' assembled the code 
in ieee.s in under one second. 
As the profiled libraries are static I build 'as' with -static (non
profiled) and this version also finishes the file in under 1 second. 

Finally in the hope it might give an indication I 'ktrace'ed the slow
dynamically linked 'as'. Again it finished in under 1 second. Still, without
ktrace it takes 36 minutes to assemble ieee.s.

Has anyone any idea as to either what is broken or what other tests I can
perform to find the issue at hand?

(dmesg appended)

	Janjaap van Velthooven
--  ________________________________________
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[ using 471312 bytes of bsd ELF symbol table ]
consinit: not using prom console
Copyright (c) 1982, 1986, 1989, 1991, 1993
	The Regents of the University of California.  All rights reserved.
Copyright (c) 1995-2005 OpenBSD. All rights reserved.  http://www.OpenBSD.org

OpenBSD 3.8 (GENERIC) #1: Mon Aug 29 21:01:58 CEST 2005
    janjaap@alf:/mnt/forest/trees/src/sys/arch/alpha/compile/GENERIC
Digital AlphaPC 164SX 533 MHz
8192 byte page size, 1 processor.
total memory = 268435456 (262144K)
(1966080 reserved for PROM, 266469376 used by OpenBSD)
avail memory = 226918400 (221600K)
using 3252 buffers containing 26640384 bytes (26016K) of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), PCA56-2 (unknown minor type 2)
cpu0: Architecture extensions: 1<BWX>
cia0 at mainbus0: DECchip 2117x Core Logic Chipset (Pyxis), pass 1
cia0: extended capabilities: 1<BWEN>
cia0: using BWX for PCI config and bus access
pci0 at cia0 bus 0
em0 at pci0 dev 5 function 0 "Intel PRO/1000MT (82541GI)" rev 0x00: eb164 irq 9, address: 00:0e:0c:51:3d:a0
siop0 at pci0 dev 6 function 0 "Symbios Logic 53c875" rev 0x26: eb164 irq 11, using 4K of on-board RAM
scsibus0 at siop0: 16 targets
ti0 at pci0 dev 7 function 0 "Netgear GA620" rev 0x01: eb164 irq 10 address 00:02:e3:00:25:82
sio0 at pci0 dev 8 function 0 "Contaq Microsystems CY82C693U ISA" rev 0x00
pciide0 at pci0 dev 8 function 1 "Contaq Microsystems CY82C693U ISA" rev 0x00: DMA, channel 0 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <ST36531A>
wd0: 32-sector PIO, LBA, 6204MB, 12706470 sectors
wd1 at pciide0 channel 0 drive 1: <Maxtor 6Y160P0>
wd1: 16-sector PIO, LBA48, 156334MB, 320173056 sectors
wd0(pciide0:0:0): using PIO mode 4, DMA mode 2
wd1(pciide0:0:1): using PIO mode 4, DMA mode 2
pciide1 at pci0 dev 8 function 2 "Contaq Microsystems CY82C693U ISA" rev 0x00: no DMA, channel 0 wired to compatibility
atapiscsi0 at pciide1 channel 0 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <LITEON, CD-ROM LTN301, MM11> SCSI0 5/cdrom removable
cd0(pciide1:0:0): using PIO mode 4
ohci0 at pci0 dev 8 function 3 "Contaq Microsystems CY82C693U ISA" rev 0x00: couldn't map interrupt
vga0 at pci0 dev 9 function 0 "Matrox MGA G200 PCI" rev 0x01
wsdisplay0 at vga0 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
isa0 at sio0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
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
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
isabeep0 at pcppi0
lpt0 at isa0 port 0x3bc/4 irq 7
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
mcclock0 at isa0 port 0x70/2: mc146818 or compatible
root on wd0a swap on wd0b
rootdev=0x0 rrootdev=0x2400 rawdev=0x2402
stray isa irq 4
stray isa irq 3
wsdisplay0: screen 8 added (80x25, vt100 emulation)
wsdisplay0: screen 9 added (80x25, vt100 emulation)
wsdisplay0: screen 4 deleted
wsdisplay0: screen 5 deleted
wsdisplay0: screen 4 added (80x40, vt100 emulation)
wsdisplay0: screen 5 added (80x40, vt100 emulation)
wsdisplay0: screen 6 added (80x40, vt100 emulation)
wsdisplay0: screen 7 added (80x40, vt100 emulation)
wsdisplay0: screen 10 added (80x50, vt100 emulation)
wsdisplay0: screen 11 added (80x50, vt100 emulation)