Help! Altos 5.3.1 fork is failing!

Brandon S. Allbery allbery at NCoast.ORG
Fri Oct 20 12:03:09 AEST 1989

As quoted from <506 at oglvee.UUCP> by jr at oglvee.UUCP (Jim Rosenberg):
| We just recently "upgraded" [sic] an Altos 2000 from Xenix 5.2c to UNIX 5.3d.
| per-user limit is 30, and we're getting fork failures where that's not exceeded
| either.  The system error reporting is filled with messages like this:

Ah, so someone else *is* getting those little buggers.

As far as I can tell, "fork failed"s happen when memory is mostly full and
something wants to fork and for some stupid reason Altos 5.3[a-d][DT][0-9]
doesn't want to page anything out to make more room in core even though it can
do so.  I have some "sar" output that corroborates this, "fork failed" happens
when a process tries to fork and there are < 100 free 512-byte (I think that's
the units sar uses, I need to check) chunks of memory.

I plan to ram this down Altos T/S's collective throat, since they haven't
fixed it in 5.3dT1 and I reported it in 5.3bT1 (3 upgrades have gone by so

++Brandon, for this message speaking as the tech guru of telotech, inc.
Brandon S. Allbery, moderator of comp.sources.misc	     allbery at NCoast.ORG
uunet!!ncoast!allbery ncoast!allbery at bsa at telotech.uucp
161-7070 (MCI), ALLBERY (Delphi), B.ALLBERY (GEnie), comp-sources-misc at backbone
[comp.sources.misc-related mail should go ONLY to comp-sources-misc@<backbone>]
*Third party vote-collection service: send mail to allbery at (ONLY)*

More information about the Comp.unix.i386 mailing list