Note the non-trivial execution time difference:
soekris:~/pinlab# egrep -e 'Locking|Good' dmesg-2.6.18-rc4-*
dmesg-2.6.18-rc4-mm1-sk:[ 16.044699] | Locking API testsuite:
dmesg-2.6.18-rc4-mm1-sk:[ 96.083576] Good, all 218 testcases passed! |
dmesg-2.6.18-rc4-sk:[ 18.563808] | Locking API testsuite:
dmesg-2.6.18-rc4-sk:[ 19.693692] Good, all 218 testcases passed! |
I diffed the respective configs, saw nothing obvious in the following,
some of them look like theyd favor -mm1, if anything.
<trimming the obvious irrelevants>
[jimc@harpo lxbuild]$ diff linux-2.6.18-rc4-sk/.config
linux-2.6.18-rc4-mm1-sk/.config
3,4c3,4
< # Linux kernel version: 2.6.18-rc4
< # Mon Aug 7 17:53:01 2006
---
> # Linux kernel version: 2.6.18-rc4-mm1
> # Sun Aug 13 09:19:25 2006
1451a1491
> CONFIG_ENABLE_MUST_CHECK=y
1454a1495
> CONFIG_DEBUG_SHIRQ=y
1482,1483c1525,1528
< CONFIG_FORCED_INLINING=y
< CONFIG_RCU_TORTURE_TEST=y
---
> # CONFIG_PROFILE_LIKELY is not set
> # CONFIG_FORCED_INLINING is not set
> # CONFIG_DEBUG_SYNCHRO_TEST is not set
> # CONFIG_RCU_TORTURE_TEST is not set
1486c1531
< CONFIG_DEBUG_STACK_USAGE=y
---
> # CONFIG_DEBUG_STACK_USAGE is not set
will send full configs if useful.
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