IBM REDP-4285-00 User Manual

4285ax01.fm

Draft Document for Review May 4, 2007 11:35 am

140

Linux Performance and Tuning Guidelines

Hardware and software configurations

The tests, tuning modifications, benchmark runs, and monitoring performed for this redpaper
were executed with Linux installed on two different hardware platforms:

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Guest on IBM z/VM systems

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Native on IBM System x servers

Linux installed on guest IBM z/VM systems

IBM z/VM V5.2.0 was installed on an LPAR on an IBM z9 processor. Installed z/VM
components were tcpip, dirmaint, rscs, pvm, and vswitch.

The various Linux guest VM systems were configured as shown in Table A-1.

Table A-1 Linux installed on guest z/VM systems

Linux installed on IBM System x servers

Three IBM System x x236 servers were configured as shown in Table A-2.

Table A-2 Linux installed on System x servers

System name

LNXSU1

LNXSU2

LNXRH1

Linux distribution

SUSE Linux
Enterprise Server 10

Red Hat Enterprise
Linux 5

Install

default with sysstat
6.0.2-16.4

default with sysstat
7.0.0-3.el5

Memory

512 MB

swap (2105 Shark
DASD)

710 MB

/root (2105 Shark
DASD)

6.1 GB

/perf (2107 DS8000
DASD)

ReiserFS 6.8 GB

Ext3 6.8 GB

System name

LNXSU3

LNXSU4

LNXSU5

Linux distribution

SUSE Linux
Enterprise Server 10
(runlevel 3)

Red Hat Enterprise
Linux 4
(runlevel 5)

Red Hat Enterprise
Linux 5
(runlevel 5)

Install

default with sysstat
6.0.2-16.4 and
powertweak

default with sysstat

Memory

4096 MB

swap (RAID 1,
2*74GB)

2 GB

/root (RAID 1, 2*74GB)

70 GB