Re: scanning user space

["Pete Clifford \(@riadne software\)" <pete@xxxxxxxxxxxxxxxxxxxxx>]

The "simple data structure" was just this:

D Buffer          DS
D   saBuffer                 32767A


----- Original Message ----- 
From: "Richard B Baird" <rbaird@xxxxxxxxxxxxxxxxxxxxx>
To: "RPG programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx>
Sent: Wednesday, June 25, 2003 3:26 AM
Subject: Re: scanning user space


>
> Wow.
>
> thanks for doing my benchmark for me Pete.  you gotta love this list ;)
>
> could you elaborate a little on the 'simple data structure' bit for me?
>
> thanks again,
>
> Rick
>
> ----------original message------------
> <snip>
> C. Using a 32Kb buffer (just a simple data structure in the program). This
> needed about 500 reads.
>
> D. Using a 20-byte buffer. This needed over 800,000 reads.
>
> I ran 5 tests of each type and took the average elapsed time and CPU
> seconds
> used.
>
> The results were a surprise to me.
>
> A.    43.4 seconds elapsed 3.0 seconds CPU time.
> B.    20.4 seconds elapsed 2.6 seconds CPU time.
> C.    4 seconds elapsed 2 seconds CPU time.
>
>
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