Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!zaphod.mps.ohio-state.edu!rpi!bu.edu!orc!inews!iwarp.intel.com!omepd!littlei!lint.intel.com!vrs
From: vrs@lint.intel.com (Vincent R. Slyngstad)
Newsgroups: comp.unix.wizards
Subject: Re: Process Status on Interactive 386/ix
Message-ID: <1215@gandalf.littlei.UUCP>
Date: 27 Jul 90 00:10:22 GMT
References: <23960@adm.BRL.MIL>
Sender: news@littlei.UUCP
Reply-To: vrs@lint.intel.com (Vincent R. Slyngstad)
Lines: 16

In article <23960@adm.BRL.MIL>, hsw@sparta.com (Howard Weiss) writes:
> Anyone have any idea why a 'ps -ef' or 'ps -el' on a 386 running Interactive
> 386/ix (SysV 3.2) would only give me listings of those processes that are
> in memory and nothing regarding those that have been swapped out?
This is probably because the SYSI86 system call to read the U-area calls the
disk driver (for swap) with a size that is not a multiple of a sector.  To my
knowledge this is the only place a V.3.2 kernel will issue a
non-sector-multiple
sized read.  If the driver returns an error (as it probably would), the SYSI86
system call fails, and ps does the best it can without a U-area (wich is not
very well).

-- 
Vincent R. Slyngstad, UNIX Development Engineering, Intel Corporation
vrs@littlei.intel.com
"*Talk* to me about Elvis!"