07-22-2005
Linux Benchmarks Makes No Sense
I created two computers with identical hardware, and run the benchmark programs in both starting at the same exact time.
What makes no sense is that the computer that has the lower average index (121) finished the race a good 30 minutes ahead of the computer wich showed the higher avg index (167). The only difference here were the operating systems, which I am not naming yet because it may have commercial implications, and frankly I need to understand the results before jumping to conclusions. Maybe lower index means better system? That would be absurd.
Anybody has any idea about what is happenning?
TEST BASELINE RESULT INDEX
Arithmetic Test (type = double) 2541.7 1062680.6 418.1
Dhrystone 2 without register variables 22366.3 5043054.8 225.5
Execl Throughput Test 16.5 132.0 8.0
File Copy (30 seconds) 179.0 10549.0 58.9
Pipe-based Context Switching Test 1318.5 2091.5 1.6
Shell scripts (8 concurrent) 4.0 63.3 15.8
=========
SUM of 6 items 727.9
AVERAGE 121.3
TEST BASELINE RESULT INDEX
Arithmetic Test (type = double) 2541.7 1156065.7 454.8
Dhrystone 2 without register variables 22366.3 7300029.6 326.4
Execl Throughput Test 16.5 63.1 3.8
File Copy (30 seconds) 179.0 38201.0 213.4
Pipe-based Context Switching Test 1318.5 3060.1 2.3
Shell scripts (8 concurrent) 4.0 24.0 6.0
=========
SUM of 6 items 1006.8
AVERAGE 167.8
This User Gave Thanks to philip_38 For This Post:
9 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hello everyone.
Does anyone know where to I could find published benchmarks for how a Linux box performs. It would be nice if I could find a comparison to the Windows OS.
Thanks,
Lance (2 Replies)
Discussion started by: lcstephens
2 Replies
2. Linux Benchmarks
STEP 1: Get the source here:
https://www.unix.com/source/bm.zip
or
https://www.unix.com/source/unix_linux_bench.tar.gz
STEP 2: unzip or untar and cd into the bm directory
STEP 3: make
(Note: there is a pre-compiled Linux binary in the distro, so Linux users don't have to make a... (0 Replies)
Discussion started by: Neo
0 Replies
3. UNIX for Dummies Questions & Answers
I have 3 files in directory mydir named as follows, I run the sequence of commands shown below and I have questions at the result.
File names are:
ABC_GP0
ABC_GP0.ctl
ABC_GPX
Commands and results:
$ ls /mydir/ | grep *
<-- (q1) I get nothing - OK
$ ls /mydir/ | grep... (5 Replies)
Discussion started by: GNMIKE
5 Replies
4. Linux Benchmarks
Hi,
I was trying to build Linux Benchmarks with latest Intel C++ Compiler.
When I used -ipo (inter-procedural optimization) option, arithmetic test (arith.c) failed on execution.
The problem is Intel compiler's advanced optimization option (-ipo) optimizes much more than expected and this... (50 Replies)
Discussion started by: cpjain
50 Replies
5. Linux Benchmarks
FYI:
Here is the archive site for the original Linux benchmarks (1994 - 1996)
http://linux.silkroad.com/
Neo (3 Replies)
Discussion started by: Neo
3 Replies
6. Shell Programming and Scripting
Hi, I've been running code which very frequently calls books.csv. e.g:
grep -i horror books.csv > tempExcept, I'm trying to move away from using temporary files or frequently calling books.csv to improve efficiency. So I tried something like
bookfile=$(cat books.csv)
grep -i horror... (4 Replies)
Discussion started by: Quan
4 Replies
7. Shell Programming and Scripting
Hi,
I have written a small shellscript
Imagine dbalt.txt already existed...
"
....
touch report.txt
lynx -dump "http://site.com/index.htm" > site1.txt
lynx -dump "http://site.com/index2.htm" > site2.txt
grep -E 'Nummer: |EUR' site1.txt > preis1.txt
grep -E 'Nummer: |EUR' site2.txt >... (2 Replies)
Discussion started by: Blackbox
2 Replies
8. Programming
Okay so I'm making a simple text based game that branches into different scenarios. By branching I mean branching off into whole different files with that part of the game in it. I got tired of working on scenario 1 so I'm working on scenario 2. As I get started and try to test it, I get an error... (1 Reply)
Discussion started by: lemonoid
1 Replies
9. Shell Programming and Scripting
Okay so I'm making a simple text based game that branches into different scenarios. By branching I mean branching off into whole different files with that part of the game in it. I got tired of working on scenario 1 so I'm working on scenario 2. As I get started and try to test it, I get an... (3 Replies)
Discussion started by: lemonoid
3 Replies
LEARN ABOUT DEBIAN
chrony
CHRONY(1) User's Manual CHRONY(1)
NAME
chrony - programs for keeping computer clocks accurate
SYNOPSIS
chronyc [OPTIONS]
chronyd [OPTIONS]
DESCRIPTION
chrony is a pair of programs for keeping computer clocks accurate. chronyd is a background (daemon) program and chronyc is a command-line
interface to it. Time reference sources for chronyd can be RFC1305 NTP servers, human (via keyboard and chronyc), or the computer's real-
time clock at boot time (Linux only). chronyd can determine the rate at which the computer gains or loses time and compensate for it while
no external reference is present. Its use of NTP servers can be switched on and off (through chronyc) to support computers with dial-
up/intermittent access to the Internet, and it can also act as an RFC1305-compatible NTP server.
USAGE
chronyc is a command-line interface program which can be used to monitor chronyd's performance and to change various operating parameters
whilst it is running.
chronyd's main function is to obtain measurements of the true (UTC) time from one of several sources, and correct the system clock accord-
ingly. It also works out the rate at which the system clock gains or loses time and uses this information to keep it accurate between mea-
surements from the reference.
The reference time can be derived from either Network Time Protocol (NTP) servers, reference clocks, or wristwatch-and-keyboard (via
chronyc). The main source of information about the Network Time Protocol is http://www.eecis.udel.edu/~ntp.
It is designed so that it can work on computers which only have intermittent access to reference sources, for example computers which use a
dial-up account to access the Internet. Of course, it will work on computers with permanent connections too.
In addition, for Linux 2.0.x (for x >= 32) or 2.2 onwards, chronyd can monitor the system's real time clock performance, so the system can
maintain accurate time even across reboots.
Typical accuracies available between 2 machines are
On an ethernet LAN : 100-200 microseconds, often much better On a V32bis dial-up modem connection : 10's of milliseconds (from one session
to the next)
With a good reference clock the accuracy can reach one microsecond.
chronyd can also operate as an RFC1305-compatible NTP server and peer.
SEE ALSO
chronyc(1), chrony(1)
http://chrony.tuxfamily.org/
AUTHOR
Richard Curnow <rc@rc0.org.uk>
This man-page was written by Jan Schaumann <jschauma@netmeister.org> as part of "The Missing Man Pages Project". Please see
http://www.netmeister.org/misc/m2p2/index.html for details.
The complete chrony documentation is supplied in texinfo format.
chrony December 04, 2009 CHRONY(1)