From owner-freebsd-smp  Fri Jun 11  8:28:21 1999
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To: chris@calldei.com
Cc: "David E. Cross" <crossd@cs.rpi.edu>,
	freebsd-hackers@FreeBSD.ORG, freebsd-smp@FreeBSD.ORG,
	crossd@cs.rpi.edu
Subject: Re: High syscall overhead? 
In-Reply-To: Message from Chris Costello <chris@calldei.com> 
   of "Fri, 11 Jun 1999 09:59:25 CDT." <19990611095925.V57174@holly.dyndns.org> 
Date: Fri, 11 Jun 1999 11:28:09 -0400
From: "David E. Cross" <crossd@cs.rpi.edu>
Sender: owner-freebsd-smp@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org

Oops, here is some additional information from my system:

bash-2.02$ cat sc.c
int main (void)
{
int count=0;
        for(count=0;count <10000000;++count)
                getppid();

        return 0;
}
bash-2.02$ cc -o sc sc.c
bash-2.02$ uptime
11:19AM  up 3 hrs, 4 users, load averages: 0.01, 0.01, 0.00
bash-2.02$ time ./sc

real    0m18.523s
user    0m0.000s
sys     0m18.521s
bash-2.02$ (date;time ./sc;date) & (date;time ./sc;date) &
[3] 516
[4] 517
Fri Jun 11 11:21:51 EDT 1999
[1]   Done                    time ./sc
Fri Jun 11 11:21:51 EDT 1999
[2]   Done                    time ./sc
bash-2.02$ 
real    0m52.058s
user    0m0.000s
sys     0m52.056s

real    0m52.056s
user    0m0.000s
sys     0m52.053s
Fri Jun 11 11:22:43 EDT 1999
Fri Jun 11 11:22:43 EDT 1999

bash-2.02$ dmesg | head
Copyright (c) 1992-1999 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
        The Regents of the University of California. All rights reserved.
FreeBSD 3.2-STABLE #0: Fri Jun 11 08:18:12 EDT 1999
    root@phoenix.home:/usr/src/sys/compile/PHOENIX_DUAL
Timecounter "i8254"  frequency 1193182 Hz
CPU: Pentium II/Xeon/Celeron (686-class CPU)
  Origin = "GenuineIntel"  Id = 0x652  Stepping=2
  Features=0x183fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,<b24>>
real memory  = 268435456 (262144K bytes)
avail memory = 257925120 (251880K bytes)
Programming 24 pins in IOAPIC #0
FreeBSD/SMP: Multiprocessor motherboard
 cpu0 (BSP): apic id:  1, version: 0x00040011, at 0xfee00000
 cpu1 (AP):  apic id:  0, version: 0x00040011, at 0xfee00000
 io0 (APIC): apic id:  2, version: 0x00170011, at 0xfec00000
Preloaded elf kernel "kernel" at 0xc02df000.
Probing for devices on PCI bus 0:
chip0: <Intel 82443BX host to PCI bridge> rev 0x03 on pci0.0.0
chip1: <Intel 82443BX host to AGP bridge> rev 0x03 on pci0.1.0

It is -STABLE from June 7th, mid-day.

--
David Cross                               | email: crossd@cs.rpi.edu 
Systems Administrator/Research Programmer | Web: http://www.cs.rpi.edu/~crossd 
Rensselaer Polytechnic Institute,         | Ph: 518.276.2860            
Department of Computer Science            | Fax: 518.276.4033
I speak only for myself.                  | WinNT:Linux::Linux:FreeBSD


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