performance testing of UNWIND kernel option

Gennady Kupava gb at
Tue Mar 8 15:01:42 CET 2011

Hi, list.

Today I noticed the following change in SHR: (by Denis 'GNUtoo' Carikli <GNUtoo at>) and decided to lmbench it.

Here are results:

You can see comparison of:

34def -> kernel with CONFIG_FRAME_POINTER
unwind -> kernel with CONFIG_ARM_UNWIND
default -> for reference, old debugging kernel

The unwind option provide clear benefit of 5%-10% in almost every area.

Nice spot Denis!


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