Messages in this thread | | | Date | 25 Jul 2005 02:34:58 GMT | From | Kenneth Parrish <> | Subject | Re: [patch 2.6.13-rc3a] i386: inline restore_fpu |
| |
-=> Kenneth Parrish wrote to All <=-
KP> 2.6.13-rc3-git5 lags -git4 on nbench's bitfield test, a part of its KP> memory index, eg typical runs KP> -git5 KP> BITFIELD : 1.1589e+07 : 1.99 : 0.42 KP> -git4 KP> BITFIELD : 2.1892e+07 : 3.76 : 0.78
KP> lmbench has slower context switch numbers for -git5.
i've been experimentally adding -funswitch-loops and -fpeel loops to the default -march=i586 in the ../arch/i386/Makefile
cflags-$(CONFIG_M586) += -march=i586 -funswitch-loops -fpeel-loops
based on some tests with gcc 3.4.3,4 and the cyrix mii cpu, but with v2.6.13-rc3-git5 carelessly put these flags on the next, cflags-$(CONFIG_M586TSC) line, and so they would not have been used. i shall retest after recompiling to confirm. [..] yeah, a couple nbench runs show similar overall results as -git4 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |