View Source: KernelCompilationTimes - Waikato Linux Users Group

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This page covers the Kernel Compilation Benchmark, which is often used to provide a rough comparison of system performance.  This page used to use a 2.4.19 default config to do this benchmark, this data still exists at KernelCompilationTimes2.4. The 2.4.19 kernel is a bit old now, and the 2.6 build process has changed a lot, so we've updated this to use 2.6.8 as the test [Kernel].

A few things have changed - there is no longer any need to run make dep or make modules, so there will only be one time output. You will need to run make defconfig first, otherwise it will try to build a host-specific config for your computer.

It's still important to perform the compile as soon as you untar the [Kernel] source, to ensure the source is still in disk cache.


(In /usr/src, with the 2.6.8 source downloaded already)

<pre>
 tar jxf linux-2.6.8.tar.bz2
 # or tar zxf linux-2.6.8.tar.gz
 cd linux-2.6.8
 # use the default config
 make defconfig
 /usr/bin/time -p -o /tmp/dep.time make
</pre>

If you have a machine with more than one processor, you can use make -j n .... where n is the number of cpus + 1

----
Name: deuterium
%%%OS: Gentoo 2004.2 Linux 2.6.8
%%%Hardware: P4 2.8C Northwood, 1024 MB DDR400 RAM, Intel D865GLC Motherboard
%%%Notes: SMP + SMT enabled
%%%/proc/cpuinfo:
<verbatim>
 processor       : 1
 vendor_id       : GenuineIntel
 cpu family      : 15
 model           : 2
 model name      : Intel(R) Pentium(R) 4 CPU 2.80GHz
 stepping        : 9
 cpu MHz         : 2793.238
 cache size      : 512 KB
</verbatim>
make
* real    7m26.87s
* user    7m00.68s
* sys     0m31.68s

make -j3
* real    7m25.23s
* user    7m01.32s
* sys     0m31.43s

----

Name: voodoo
%%%OS: Debian Woody 3.0 2.4.26
%%%Hardware: Dual Athlon 1800MP+ (1533MHz), 2048 MB RAM
%%%Notes:
%%%/proc/cpuinfo:
<verbatim>
 processor       : 1
 vendor_id       : AuthenticAMD
 cpu family      : 6
 model           : 6
 model name      : AMD Athlon(TM) MP 1800+
 stepping        : 2
 cpu MHz         : 1533.398
 cache size      : 256 KB
</verbatim>

make
* real    7m05.12s
* user    6m08.19s
* sys     0m43.02s

make -j3
* real    4m36.29s
* user    6m22.54s
* sys     0m45.22s

----

Name: Wildfire
%%%OS: Gentoo 2.6.7-gentoo-r11
%%%Hardware: Dual Opteron 244, 2048MB Ram
%%%/proc/cpuinfo
<verbatim>
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 5
model name      : AMD Opteron(tm) Processor 244
stepping        : 8
cpu MHz         : 1792.241
cache size      : 1024 KB
</verbatim>

make
* real    4m42.88s
* user    4m10.97s
* sys     0m34.17s

make -j 3
* real    2m30.92s
* user    4m12.54s
* sys     0m34.84s

----

Name: kiakaha
%%%OS: Debian Sarge 3.1 Linux 2.6.7
%%%Hardware: Dual P3 1GHz, 1.5 GB RAM
%%%Notes:
%%%/proc/cpuinfo:
<verbatim>
processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 8
model name      : Pentium III (Coppermine)
stepping        : 10
cpu MHz         : 999.703
cache size      : 256 KB
</verbatim>

make:
* real  13m22.91s
* user  12m06.51s
* sys    1m01.81s

make -j4  (make -j3, for some reason, didn't parallelise at all)
* real   7m16.06s
* user  12m46.04s
* sys    1m07.41s

----
Name: loki
%%%OS: Gentoo 2004.2 linux 2.6.7
%%%Hardware: AMD64 3000+ with 512MB RAM
%%%/proc/cpuinfo:
<verbatim>
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 12
model name      : AMD Athlon(tm) 64 Processor 3000+
stepping        : 0
cpu MHz         : 2009.804
cache size      : 512 KB
</verbatim>

make:
* real  6m58.06s
* user  6m17.01s
* sys   0m34.15s

----
Name:
%%%OS:
%%%Hardware:
%%%/proc/cpuinfo:
<verbatim>
processor       :
vendor_id       :
cpu family      :
model           :
model name      :
stepping        :
cpu MHz         :
cache size      :
</verbatim>

make:


----
CategoryKernel
3 pages link to KernelCompilationTimes:
Last edited on Wednesday, July 20, 2005 11:57:22 am by IanMcDonald
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