On Sat, May 31, 2008 at 7:16 AM, David Mosberger-Tang <[EMAIL PROTECTED]> wrote: > Caching would improve performance greatly. The ia64 version of > libunwind has this implemented, but not the DWARF-based version (yet).
There is such a cache in dwarf/Gparser.c:get_rs_cache(). But I've tested it only on x86. Perhaps it's not getting enabled on ARM for some reason? On x86_64: $ tests/Lperf-simple unw_getcontext : cold avg= 259.876 nsec, warm avg= 209.808 nsec unw_init_local : cold avg= 309.944 nsec, warm avg= 169.277 nsec no cache : unw_step : 1st=10104.406 min= 1750.674 avg= 1812.264 nsec global cache : unw_step : 1st= 7665.725 min= 122.615 avg= 133.057 nsec per-thread cache: unw_step : 1st= 6103.516 min= 122.615 avg= 133.020 nsec -Arun _______________________________________________ Libunwind-devel mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/libunwind-devel
