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On 1.6GHz Montectio Tiger4, the following performance data is measured with kernel built with defconfig which has NUMA configured: Fastest sys_getcpu: 502 itc counts. Fastest fsys_getcpu: 28 itc counts. fsys_getcpu performance is largly impacted by whether data (node_to_cpu_map etc) is in cache. It can take fsys_getcpu up to ~150 itc counts in cold cache case. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com> |
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.. | ||
configs | ||
dig | ||
hp | ||
ia32 | ||
kernel | ||
lib | ||
mm | ||
oprofile | ||
pci | ||
scripts | ||
sn | ||
defconfig | ||
install.sh | ||
Kconfig | ||
Kconfig.debug | ||
Makefile | ||
module.lds |