how to speed up port make??

Polytropon freebsd at edvax.de
Wed Jul 25 22:53:52 UTC 2012


On Wed, 25 Jul 2012 08:02:37 -0700 (PDT), Mr U wrote:
> 
> hi
> 
> is it possible to speed up port make ??
> i want to install openbox and xorg on a Pentium 4 and 2gb ram,
> compiling xorg takes about 2 hours

That's a fully normal make time on such a system. I've been
experiencing it on FreeBSD 5 and 7 (with ATA disks and 768 MB
SDR-SDRAM).

There is no real way to speed it up, except to replace the hard
disk with a SSD. But that's only for I/O, not for compiling itself.
You also won't benefit from using the -j parameter (maximum number
of jobs), because the P4 does not seem to support it.

There's not much you can do to improve the system performance.
You _can_ few things to streamline the system, but that won't
be a _significant_ change.

Plan your builds to take place when you don't use the system
interactively, or use the "nice" command to give building a lower
priority. It will last longer, but can be run in the background
without noticing it.

Don't complain about build times until you compile world and
kernel on a 150 MHz Pentium 1 with 64 MB RAM. :-)


To give you some impressions of real-work build times, see those
examples:

FreeBSD 5, 500 MHz P2 system:
# make buildkernel KERNCONF
1:11
# make buildworld
3:54

FreeBSD 5, 2 GHz P4 system:
# make buildworld buildkernel
2:13
# make buildworld
1:58
# make buildkernel KERNCONF=*
0:25
# make installkernel KERNCONF=*
30s

On the same system:

A portupgrade of XFree86 server:
2:12
And mplayer including nearly all options:
1:19

FreeBSD 7, 2 GHz P4 system:
# make buildkernel KERNCONF=*
1:05
# make buildworld
3:54


Even worse:

# time make buildkernel KERNCONF=* -D USBDEBUG
18232.967u 2427.404s 7:19:49.24 78.2%   391+379k 47250+5754io 3049pf+0w

# time make buildworld buildkernel KERNCONF=*
18992.839u 2569.146s 9:12:00.28 65.1%   927+762k 25593+6358io 2506pf+0w

(No idea how I got _that_ time!)

# time make buildworld buildkernel KERNCONF=*
17272.243u 2294.595s 6:01:33.44 90.1%   24+204k 34888+6367io 2911pf+0w
18541.285u 2596.192s 6:19:33.55 92.8%   498+327k 31247+7302io 3034pf+0w
19725.009u 2882.355s 7:39:11.57 82.0%   -875+548k 44987+6963io 2950pf+0w



-- 
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...


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