Re: [PATCH 0/4] 8xx: Optimize TLB Miss code.

[Heiko Schocher <hs@denx.de>]

Hello Joakim,

Joakim Tjernlund wrote:
> Heiko Schocher <hs@denx.de> wrote on 2010/03/08 08:46:29:
>> Hello Joakim,
>>
>> Joakim Tjernlund wrote:
>> [...]
>>> What would be interesting is to skip patch 3 and turn off
>>> MODULES add PIN_TLB and compare that against your unpatched .33 but
>>> with MODULES off and PIN_TLB on
>> run     version
>>
>> 1-4   Linux2.6.33-rc without module support and PIN_TLB=on
>> 5-8   Linux2.6.33-rc without module support and PIN_TLB=on + patches 1,2,4
>>
>>                  L M B E N C H  3 . 0   S U M M A R Y
>>                  ------------------------------------
>>        (Alpha software, do not distribute)
> 
> hmm, these results varies a lot. The only stable result I can see is:
> 
>> Memory latencies in nanoseconds - smaller is better
>>     (WARNING - may not be correct, check graphs)
>> ------------------------------------------------------------------------------
>> Host                 OS   Mhz   L1 $   L2 $    Main mem    Rand mem    Guesses
>> --------- -------------   ---   ----   ----    --------    --------    -------
>> tqm8xx    Linux 2.6.33-    66   31.7  183.2       184.0      1163.0    No L2 cache?
>> tqm8xx    Linux 2.6.33-    66   31.7  183.2       184.0      1164.8    No L2 cache?
>> tqm8xx    Linux 2.6.33-    66   31.7  183.2       184.0      1163.2    No L2 cache?
>> tqm8xx    Linux 2.6.33-    66   31.7  183.2       183.8      1163.7    No L2 cache?
>> tqm8xx    Linux 2.6.33-    66   31.8  172.4       173.2      1147.3    No L2 cache?
>> tqm8xx    Linux 2.6.33-    66   31.8  172.5       173.2      1148.3    No L2 cache?
>> tqm8xx    Linux 2.6.33-    66   31.8  172.5       173.1      1146.9    No L2 cache?
>> tqm8xx    Linux 2.6.33-    66   31.8  172.5       173.2      1147.3    No L2 cache?
> 
> I don't see why the other results vary so much. Are you using NFS or having much network
> traffic?

I use NFS.

bye
Heiko
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