[rc5] RC5-64 v2.6401 client speed vs RC5-56 v2.004

Joey Sum jpsum1 at pop.uky.edu
Thu Oct 23 17:59:28 EDT 1997


>>Joey Sum <jpsum1 at pop.uky.edu> wrote:
>>1. The speed of the RC5-64 v2.6401 client (262 kk/s) is slower than the
RC5-56
>>v2.004 (280 kk/s) on my Cyrix 6x86-166+.  In both cases, I use the Cyrix
>>specific code.

>Date: Thu, 23 Oct 1997 06:36:50 -0500
>From: "Tim Charron" <tcharron at interlog.com>
>The benchmark timing is more accurate, so it is possible that the 
>reported "-benchmark" speed differs while the actual performance does 
>not.  Run a few normal blocks and see how long it takes relative 
>to rc5v2 2.004 for a more accurate test.  As well, nice settings 
>are slightly different in the win32 client...

Those were real block speeds that I reported above on "nice 2" with no
background
processes (Win32 command line client).

>>2. The nice settings seem to be different in the RC5-64 v2.6401 client.
I ran
>>the RC5-56 v2.004 client on nice 2 (normal) and never noticed any
slowdown or
>>lag.  Running the RC5-64 v2.6401 client on nice 2 shows a bit of lag and
>>slower performance when trying to run something else.  (Nice 1 is fine).

>As caspar pointed out, nice 0 is actually supernice in the win32 
>client.  In 2.004, nice 0 and nice 1 were the same.  In this version, 
>nice 1 remains the same, but nice 0 is actually an even lower 
>priority.  This was to address a couple of concerns that there are 
>(poorly written) apps that did not run when rc5v2 2.004 was running 
>at nice level 0 (video capture software and java garbage collection 
>are 2 examples that come to mind).  Nice level 2 has not changed -- 
>it will compete for cpu time with all other apps.

Hmmm, I am wondering why nice 2 didn't compete harder for more CPU in my
RC5-56 v2.004 (original release) client (Win95 command line).  The difference
between the 2 clients, both set to nice 2, is very noticable (but not
unbearable).

Joey

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