01-07-2008
Solaris and Linux system information.
Hey,
I have a program that takes more time on a solaris machine than on a linux machine. So I guess the best way to know whats going on is to compare the two systems ? CPU and Memory ? Is there any other parameter that I should look at ?
So on the
linux box I ran:
Quote:
1) cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Xeon(TM) CPU 2.80GHz
stepping : 7
cpu MHz : 2786.202
cache size : 512 KB
processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Xeon(TM) CPU 2.80GHz
stepping : 7
cpu MHz : 2786.202
cache size : 512 KB
% cat /proc/meminfo
MemTotal: 4003500 kB
And on the
Solaris:
Quote:
$ psrinfo -v
Status of processor 0 as of: 01/07/08 17:10:57
Processor has been on-line since 11/15/07 03:46:00.
The sparcv9 processor operates at 900 MHz,
and has a sparcv9 floating point processor.
Status of processor 2 as of: 01/07/08 17:10:57
Processor has been on-line since 11/15/07 03:45:59.
The sparcv9 processor operates at 900 MHz,
and has a sparcv9 floating point processor.
$ prtconf | grep Memory
Memory size: 4096 Megabytes
So I guess the fact that the CPU on linux box is
2.80GHz and on solaris box is
900 MHz made the difference ? lets assume that the system load on both the machines was the same.
What other commands can I use to get system information to diagnose these kind of problems.
Ive heard of intel processors but what is that sparcv9 processor on my solaris box? Is it only used on solaris machines ?
Also, on my linux box:
Quote:
$ uname --help
-m, --machine print the machine hardware name
-p, --processor print the processor type
-i, --hardware-platform print the hardware platform
$ uname -p
i686
$ uname -m
i686
$ uname -i
i386
Processor and Machine is i686, but hardware platform is i386. Whats the difference ?
Thanks in advance for any kind of input
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LEARN ABOUT CENTOS
x86_energy_perf_policy
X86_ENERGY_PERF_POLICY(8) System Manager's Manual X86_ENERGY_PERF_POLICY(8)
NAME
x86_energy_perf_policy - read or write MSR_IA32_ENERGY_PERF_BIAS
SYNOPSIS
x86_energy_perf_policy [-c cpu] [-v] -r
x86_energy_perf_policy [-c cpu] [-v] 'performance'
x86_energy_perf_policy [-c cpu] [-v] 'normal'
x86_energy_perf_policy [-c cpu] [-v] 'powersave'
x86_energy_perf_policy [-c cpu] [-v] n
DESCRIPTION
x86_energy_perf_policy allows software to convey its policy for the relative importance of performance versus energy savings to the proces-
sor.
The processor uses this information in model-specific ways when it must select trade-offs between performance and energy efficiency.
This policy hint does not supersede Processor Performance states (P-states) or CPU Idle power states (C-states), but allows software to
have influence where it would otherwise be unable to express a preference.
For example, this setting may tell the hardware how aggressively or conservatively to control frequency in the "turbo range" above the
explicitly OS-controlled P-state frequency range. It may also tell the hardware how aggressively is should enter the OS requested C-
states.
Support for this feature is indicated by CPUID.06H.ECX.bit3 per the Intel Architectures Software Developer's Manual.
Options
-c limits operation to a single CPU. The default is to operate on all CPUs. Note that MSR_IA32_ENERGY_PERF_BIAS is defined per logical
processor, but that the initial implementations of the MSR were shared among all processors in each package.
-v increases verbosity. By default x86_energy_perf_policy is silent.
-r is for "read-only" mode - the unchanged state is read and displayed.
performance Set a policy where performance is paramount. The processor will be unwilling to sacrifice any performance for the sake of
energy saving. This is the hardware default.
normal Set a policy with a normal balance between performance and energy efficiency. The processor will tolerate minor performance compro-
mise for potentially significant energy savings. This reasonable default for most desktops and servers.
powersave Set a policy where the processor can accept a measurable performance hit to maximize energy efficiency.
n Set MSR_IA32_ENERGY_PERF_BIAS to the specified number. The range of valid numbers is 0-15, where 0 is maximum performance and 15 is max-
imum energy efficiency.
NOTES
x86_energy_perf_policy runs only as root.
FILES
/dev/cpu/*/msr
SEE ALSO
msr(4)
AUTHORS
Written by Len Brown <len.brown@intel.com>
X86_ENERGY_PERF_POLICY(8)