[syslinux] [Etherboot-developers] gPxe functionality in pxelinux

Michael Brown mbrown at fensystems.co.uk
Thu Dec 4 10:21:49 PST 2008


On Thursday 27 November 2008 09:26:20 Stefan Hajnoczi wrote:
> mcb30: I'm not sure why some code implements a settings_applicator and
> keeps a local copy of the setting value.  Is this a covenience to
> avoid going through the settings API every time we access the value or
> is there some other reason?

Yes; that's the reason.  Performing a settings lookup can be expensive 
(particularly if it involves e.g. scanning through i2c-accessible EEPROM or 
similar), so caching is worthwhile for frequently used data.

Michael




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