Re: 7.0BETA4 ../cc_tools/insn-attrtab.c compiles forever

Sorry for delay (travelling),
Answers to 1 private mail & 2 list posted replies further below,
first my original posting for reference:

Anyone else noticed on 7.0BETA4 (& hence Ive cc'd re@)

This runs forever:

===> cc_int (all)
Warning: Object directory not changed from original /usr/src/gnu/usr.bin/cc/cc_int
cc -O2 -fno-strict-aliasing -march=i586 -DIN_GCC -DHAVE_CONFIG_H -DPREFIX=\"/usr\" -I/usr/src/gnu/usr.bin/cc/cc_int/../cc_tools -I/usr/src/gnu/usr.bin/cc/cc_int/../cc_tools -I/usr/src/gnu/usr.bin/cc/cc_int/../../../../contrib/gcc -I/usr/src/gnu/usr.bin/cc/cc_int/../../../../contrib/gcc/config -I/usr/src/gnu/usr.bin/cc/cc_int/../../../../contrib/gcclibs/include -I/usr/src/gnu/usr.bin/cc/cc_int/../../../../contrib/gcclibs/libcpp/include -I/usr/src/gnu/usr.bin/cc/cc_int/../../../../contrib/gcclibs/libdecnumber -c ../cc_tools/insn-attrtab.c

With or without -pipe & with or without /usr/obj
All the rest of /usr/src compiles OK though.

FreeBSD lapn.js.berklix.net 7.0-BETA4 FreeBSD 7.0-BETA4 #0: Sun Dec 16 09:18:21 CET 2007 jhs@xxxxxxxxxxxxxxxxxxx:/usr/src/sys/i386/compile/GENERIC i386

----------

From: Michael Voorhis Wed, 19 Dec 2007 21:11:25 -0500 (Thu 03:11 CET):

What sort of machine do you have? I seem to recall that compile-line
taking an age, but not forever. It takes a while to finish on my
Thinkpad t42, which is a

Pentium(R) M processor 1.70GHz (1694.51-MHz 686-class CPU)

This an old laptop with small slow disc:
http://www.berklix.com/~jhs/hardware/laptops/dell_latitude_xpi_p133st/
CPU: Pentium/P54C (133.64-MHz 586-class CPU)
avail memory = 43507712 (41 MB)
/boot/loader.conf:
hw.ata.ata_dma=0
hw.ata.wc=0
swapinfo
Device 1K-blocks Used Avail Capacity
/dev/ad0s1b 102400 10156 92244 10%
/dev/md0 100000 10144 89856 10%

----------

From: Ivan Voras <ivoras@xxxxxxxxxxx> Thu, 20 Dec 2007 11:47:57 +0100

I did see some weird behaviour while compiling gcc, though I don't
remember if it's the same file (looks like it). They usually disappeared
after removing CPUTYPE and -O2 from compiler flags.

My /etc/make.conf just has CFLAGS += -march=i586
I assume -O2 is coming out of /usr/src/ gcc itself.

----------

From: Nikos Ntarmos <ntarmos@xxxxxxxxxxxxxxx> Thu, 20 Dec 2007 13:33:31 +0200

I'd bet you're seeing some serious thrashing there. I've come across at
least one other user having problems with that particular part of
buildworld and -O2/-Os optimization levels. Seems like gcc4 is quite the
memory hog so I don't know whether something can be done, other than
either adding more RAM, trying to tweak swappiness, or taking a break
while this thing compiles itself.

Yes, on return from travels, I powered up, left it running for day[s?]
looked again & finally it had finished.
Now trying from BETA4 to 7-Stable.

Seems your right about gcc4 & memory hog.
(-pipe by default makes it even worse, subject of another thread).

Thanks all.
--
Julian Stacey. Munich Computer Consultant, BSD Unix C Linux. http://berklix.com
Ihr Rauch = mein allergischer Kopfschmerz. Dump cigs 4 snuff.
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