From: Kenneth Parrish <Kenneth.Parrish@family-bbs.org>
To: linux-kernel@vger.kernel.org
Subject: Re: [patch 2.6.13-rc3a] i386: inline restore_fpu
Date: 25 Jul 2005 02:34:58 GMT [thread overview]
Message-ID: <603f59.f8ac5d@family-bbs.org> (raw)
-=> 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
next reply other threads:[~2005-07-25 2:44 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-25 2:34 Kenneth Parrish [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-07-27 1:40 [patch 2.6.13-rc3a] i386: inline restore_fpu linux
2005-07-26 21:23 Chuck Ebbert
2005-07-26 21:47 ` Linus Torvalds
2005-07-26 21:23 Chuck Ebbert
2005-07-24 12:56 Kenneth Parrish
[not found] <200507212309_MC3-1-A534-95EF@compuserve.com.suse.lists.linux.kernel>
[not found] ` <20050722132756.578acca7.akpm@osdl.org.suse.lists.linux.kernel>
2005-07-23 15:35 ` Andi Kleen
2005-07-23 7:09 Chuck Ebbert
2005-07-23 17:33 ` Linus Torvalds
2005-07-23 7:09 Chuck Ebbert
2005-07-23 17:38 ` Linus Torvalds
2005-07-23 17:46 ` Arjan van de Ven
2005-07-23 18:02 ` Linus Torvalds
2005-07-22 9:58 Chuck Ebbert
2005-07-22 3:06 Chuck Ebbert
2005-07-22 3:27 ` Andrew Morton
2005-07-22 5:22 ` Linus Torvalds
2005-07-22 11:23 ` Arjan van de Ven
2005-07-22 8:14 ` Adrian Bunk
2005-07-22 18:13 ` Linus Torvalds
2005-07-25 19:26 ` Bill Davidsen
2005-07-22 23:19 ` Linus Torvalds
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