Re: [IPCop-devel] ccache-3 upgrade

[David W S. <avi...@ai...>]

On 1/22/2011 1:57 PM, Olaf Westrik wrote:
> Since the ccache changes building is considerably slower for me.
> I have not yet run comparing tests, but I estimate the build to take
> twice the time it used to.
> Has anyone else noticed the same?
>
>
> Olaf

I'll have to pay closer attention. I know on my usual build host IPCop 2 
takes longer than 1.4 but still can spit out a shiny iso in short order. 
Are you talking about just cleaning and not a new toolchain each time? 
Do you build locally? I just started a build on a QUAD core Phenom with 
my build partition as Reiser after cleaning first. Should take an hour 
or so. This is a 64 bit version of OpenSuSE.

One thing I can tell you is that the filesystem used on the building 
host for the partition you build IPCop on makes a rather dramatic 
difference. Reiser 3.7 allows me to build the fastest of the bunch due 
to the speed of small file writes and is fast in general, ccache is 
nothing for this filesystem. XFS likes big files and was a bit slow in 
the standard mount options for the rapid succession of tiny files 
created and deleted while building IPCop but could be tuned if anyone 
was forced to use it.

I use XFS for file serving over NFS via raid5 and for media storage on 
my MythTV box. EXT3 is a bit slower than I like for building IPCop but 
not downright awful. Hadn't tried with JFS. I had tried EXT4 and it was 
moderate in speed.

Further drifting OT: The main draw for ext3 as I understand it was that 
it is backward compatible with ext2 and reliable. It sure isn't the 
defacto filesystem for performance. OpenSuSE switch to EXT3 as default 
had nothing to do with the tragic events that took place four years ago, 
the default had been Reiser before that, it was purely a compatibility 
choice. Of course the advanced user is going to pick and choose how to 
format their hard drive. I see a lot of talk in forums and a lot of 
people are led to believe that EXT3 is always the logical choice. No 
matter how fast your hardware is, filesystems actually have a speed limit.
-- 
Dave Studeman
http:/www.raqcop.com