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Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!mips!smsc.sony.com!tin
From: tin@smsc.sony.com (Le Tin)
Newsgroups: comp.unix.sysv386,comp.sys.att
Subject: Re: System Profiler, where is it?
Message-ID: <1991Jun18.205637.22965@smsc.sony.com>
Date: 18 Jun 91 20:56:37 GMT
References: <1991Jun18.163921.29837@bradley.bradley.edu>
Organization: Sony Microsystems Corp, San Jose, CA
Lines: 26

In article <1991Jun18.163921.29837@bradley.bradley.edu> guru@buhub.bradley.edu (Jerry Whelan) writes:
>
>	I am attempting to enable kernel profiling on an AT&T 6386e/33 WGS-S
>running SVR4 2.1.  It isn't working.  The Sys Admin's Guide refers to
>/usr/sbin/prfld which exists on my system.  However, when I run it, it
>comes back with "error: cannout open /dev/prf"  I don't have a /dev/prf.
>I checked on a 486 machine here and it does have a /dev/prf but it exhibits
>the same problem.  Just to see if it could be done, I mknod'ed a /dev/prf
>with the major and minor numebrs of the 486's /dev/prf.  Still no go, I
>get the same error message.
>	I don't see any mention of kernel profiling being a separate package
>for SVR4.  I have sar (& associates) running fine on the system.  Has anyone
>be able to turn get kernel profiling running on their machine?


   You need to add supports for the prf device to the kernel.  Go to
/etc/conf/sdevice.d and edit prf, change the 'N' to 'Y' and rebuild the
kernel.

-- Tin

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