imported>ThorstenStaerk |
imported>ThorstenStaerk |
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| − | '''CPU''' ('''C'''entral '''P'''rocessing '''U'''nit)s consist of logic circuitry that interprets and executes the [[software]] instructions that drive a computer. For more information, see http://en.wikipedia.org/wiki/Cpu
| + | An alias is a string that stands for a command. For example you can define "greet" to be an alias for "echo 'hello world'" like this: |
| − | | + | # alias greet="echo 'hello world'" |
| − | = What CPUs do I have? =
| + | # greet |
| − | To find out what CPUs you have at what speed, [[open a console]] and call [[hwinfo]], e.g.:
| + | hello world |
| − | $ hwinfo --cpu
| |
| − | 01: None 00.0: 10103 CPU
| |
| − | [Created at cpu.301]
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| − | Unique ID: rdCR.j8NaKXDZtZ6
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| − | Hardware Class: cpu
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| − | Arch: X86-64
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| − | Vendor: "GenuineIntel"
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| − | '''Model: 6.15.11 "Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz"'''
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| − | Features: 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,syscall,nx,lm,constant_tsc,arch_perfmon,pebs,bts,rep_good,pni,monitor,ds_cpl,vmx,est,tm2,ssse3,cx16,xtpr,lahf_lm
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| − | '''Clock: 1600 MHz'''
| |
| − | BogoMips: 4791.54
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| − | Cache: 4096 kb
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| − | '''Units/Processor: 4'''
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| − | Config Status: cfg=new, avail=yes, need=no, active=unknown
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| − | The block in this example is repeated 4 times because there this is a quad-core processor (Units/Processor: 4). The "clock" value is different because this is a 2.40GHz processor, running at 1600 MHz.
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| − | | |
| − | To reduce complexity:
| |
| − | $ hwinfo --cpu --short
| |
| − | cpu:
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| − | Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 1600MHz
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| − | Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 1600MHz
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| − | Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 1600MHz
| |
| − | Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 1600MHz
| |
| − | tells me I have a quad-core processor and 4 processor cores, so one processor with 4 cores, 2.4GHz ones running at 1600MHz.
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| − | | |
| − | = Load average = | |
| − | '''load average''' is a measure to tell how busy the [[CPU]] is. load average shows the average number of [[process]]es waiting for [http://en.wikipedia.org/wiki/Execution execution]. Usually there are three numbers presented where the first show average last minute, second average for last five minutes and the third show average load for the last fifteen minutes. | |
| − | | |
| − | Show your computer's [http://en.wikipedia.org/wiki/Load_average load average] with the [[command]]s uptime or [[top]].
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| − | | |
| − | = See also =
| |
| − | * [[hardware]]
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| − | * [[top]] - what does your CPU do
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| − | * [[diagnostics]] - what is your hardware and what does it do
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| − | | |
| − | [[Category:Hardware]]
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