On Mon, Jan 3, 2022 at 5:49 AM Dirk Müller <dmueller@xxxxxxx> wrote: > > On Sonntag, 2. Januar 2022 00:49:17 CET Song Liu wrote: > > > > For x86_64, this removes 8 out of 18 benchmark loops which each take > > > 16 jiffies, so up to 160 jiffies saved on module load (640ms on a 250HZ > > > kernel). > > How critical is 160 (or 128?) jiffies saving here? > > For my usecase, this initialization codepath is just over 50% of the total > runtime of my initrd, so it is significant. this is small initrd for virtual > environments, using however the standard distribution kernel image (which has > benchmarking enabled per Kconfig recommendation). So this kernel has to use the default config? If this is the case, it doesn't make sense to add another config. Thanks, Song [...]
