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.
On 17/08/06, Jim Cromie <[email protected]> wrote:
>
> 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! |
>
Interresting. On my box it takes at most a few seconds (don't have
printk times enabled, so I can't give exact numbers). My best estimate
is 2-3 seconds to run the self tests.
I wonder what's so different about our machines. Mine is a Athlon64 X2
4400+ w/ 2GB RAM.
relevant config options look identical to yours... Strange..
--
Jesper Juhl <[email protected]>
Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
Plain text mails only, please http://www.expita.com/nomime.html
Jesper Juhl wrote:
> On 17/08/06, Jim Cromie <[email protected]> wrote:
>>
>> 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! |
>>
> Interresting. On my box it takes at most a few seconds (don't have
> printk times enabled, so I can't give exact numbers). My best estimate
> is 2-3 seconds to run the self tests.
>
> I wonder what's so different about our machines. Mine is a Athlon64 X2
> 4400+ w/ 2GB RAM.
>
> relevant config options look identical to yours... Strange..
>
Mines a toy in comparison :-( but has its uses )
# cat /proc/cpuinfo
processor : 0
vendor_id : Geode by NSC
cpu family : 5
model : 9
model name : Unknown
stepping : 1
cpu MHz : 266.670
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu tsc msr cx8 cmov mmx cxmmx up
bogomips : 535.83
these are my closest-fit cpu choices
# CONFIG_M586MMX is not set
CONFIG_MGEODEGX1=y
# CONFIG_MGEODE_LX is not set
On 8/17/06, Jim Cromie <[email protected]> wrote:
>
> 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! |
This is more than just a dmesg difference, I assume? As in, you can
actually tell the difference in time it takes?
Thanks,
Nish
Nish Aravamudan wrote:
> On 8/17/06, Jim Cromie <[email protected]> wrote:
>>
>> 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! |
>
> This is more than just a dmesg difference, I assume? As in, you can
> actually tell the difference in time it takes?
>
yes - I can actually see individual cells (the 'ok's) in the table being
rendered separately.
This is across a serial line, at 115 kbaud, if that matters..
[ 22.762505] A-B-C-A-B-C deadlock: ok | ok | ok |
ok | ok | ok |
[ 26.589133] A-B-B-C-C-D-D-A deadlock: ok | ok | ok |
ok | ok | ok |
[ 31.854688] A-B-C-D-B-D-D-A deadlock: ok | ok | ok |
ok | ok | ok |
> Thanks,
> Nish
>