Interesting...

The ratio's aren't the same as on my machine, but it appears that substr() is pretty quick on both of our machines.

I don't know a Linux utility for this, but in the Windows world, CPU-Z http://www.cpuid.com/cpuz.php shows a lot of info about processors... It is hard for me to imagine that you don't have at least a multi-threaded processor given the raw speed of your machine for a single thread.

If I run two "number cruncher" apps at once, the performance is not 2x, but rather like 1.4x. I have old memory technology and my machine becomes memory bound. To Windows XP Pro, my machine looks pretty much like 2 CPU's except that 1+1 != 2, only about 1.4! And of course when I do that, my computer turns into a "space heater"!. When the winter gets colder, I run some BOINC project like seti@home, etc. on the theory that I might as well be doing something at least marginally useful while I am generating heat! Anyway this is what I have:(in the scheme of things, a Prescott is a wimp)

Processor 1 (ID = 0)
Number of cores        1 (max 1)
Number of threads    2 (max 2)
Name            Intel Pentium 4
Codename        Prescott
Specification        Intel(R) Pentium(R) 4 CPU 3.00GHz
Package            Socket 478 mPGA (platform ID = 2h)
CPUID            F.4.1
Extended CPUID        F.4
Core Stepping        E0
Technology        90 nm
Core Speed        3015.1 MHz (15.0 x 201.0 MHz)
Rated Bus speed        804.0 MHz
Stock frequency        3000 MHz
Instructions sets    MMX, SSE, SSE2, SSE3
L1 Data cache        16 KBytes, 8-way set associative, 64-byte line si
+ze
Trace cache        12 Kuops, 8-way set associative
L2 cache        1024 KBytes, 8-way set associative, 64-byte line size
FID/VID Control        no

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In reply to Re^6: better (faster) way of writing regexp by Marshall
in thread better (faster) way of writing regexp by jodaka

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