Messages in this thread | | | Date | Wed, 4 Jun 2008 23:23:14 +0300 | From | Adrian Bunk <> | Subject | Re: [PATCH] console - Add configurable support for console charset translation |
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On Wed, Jun 04, 2008 at 12:23:26PM -0700, Tim Bird wrote: > Sam Ravnborg wrote: > >> I can do a more controlled comparison if you're interested. > > > > What would be really useful would be to do some king of automated > > monitoring of the size of individual parts of the kernel in > > a few controlled configs. > > And then as son as somethings grows with > 1% for example then to > > bring this to lkml. > > Doing this based on linux-next would allow us to catch the bloaters > > while they are still or just have been doing certain changes. > > > > It would be nice to tell someone that just enabled som new gcc option > > that this had a cost of 163.432 bytes with a certain config. > > This would get attraction and be dealt with. > > This is something I've wanted to get done for the last few > years. We've crept towards it slowly with things like bloatwatch > and some of the automated testing CELF did for it's (currently > temporarily defunct) test lab. > > But we've never gotten to the last bit, which is to fully automate > the testing at the top of tree, and send notifications. I won't > make any promises, but this is something CELF is very interested in, > and we have parts of the required software already written.
I might be wrong, but although monitoring the size makes a lot of sense I don't believe "fully automate the testing ... and send notifications" will work.
Like the CONFIG_LOG_BUF_SHIFT example from my last email you can easily get huge differences in a defconfig that do not indicate any problem at all, and I'd expect you'll need frequent finetuning of the .config's used. And if there's a problem you'll have to identify what exactly causes the problem.
But if CELF has resources then doing this kind of stuff IMHO makes more sense than adding a config option for each 5kB of code (and also has better long-term effects).
> -- Tim
cu Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed
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