Re: Fix for GiST penalty

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От Alexander Korotkov
Тема Re: Fix for GiST penalty
Дата
Msg-id BANLkTi=JQtri6Lg1goVoWf82wCMX2eyeag@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Fix for GiST penalty  (Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>)
Ответы Re: Fix for GiST penalty
Список pgsql-hackers
On Tue, May 31, 2011 at 12:06 PM, Heikki Linnakangas <heikki.linnakangas@enterprisedb.com> wrote:
The documentation should be fixed too.
Patch with documentation fix is attached.

I tried to reproduce this problem on another computer with Windows, but problem doesn't occurs. So, seems that it can be OS, compiler, optimization level or CPU specific.
I provide some information about my laptop where I've encountered with problem. I hope this helps to reproduce this problem if needed.

$ uname -a
Linux smagen-notebook 2.6.38-8-generic-pae #42-Ubuntu SMP Mon Apr 11 05:17:09 UTC 2011 i686 i686 i386 GNU/Linux

$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=11.04
DISTRIB_CODENAME=natty
DISTRIB_DESCRIPTION="Ubuntu 11.04"

$ gcc --version
gcc (Ubuntu/Linaro 4.5.2-8ubuntu4) 4.5.2

$ cat /proc/cpuinfo 
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 Duo CPU     T7300  @ 2.00GHz
stepping : 10
cpu MHz : 800.000
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm ida dts tpr_shadow vnmi flexpriority
bogomips : 3990.66
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 Duo CPU     T7300  @ 2.00GHz
stepping : 10
cpu MHz : 800.000
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 1
initial apicid : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm ida dts tpr_shadow vnmi flexpriority
bogomips : 3989.97
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

------
With best regards,
Alexander Korotkov.
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