pt posesorii de Barton si P4

hkey_l.machinesystemcontrol•••.c.setsession managermem.management

-modificati second level data cache din default (256=0)
in 512 decimal.
xp-u e setat implicit sa mearga optim pe cache l2 de 256, dar Barthoanele si p4 au 512 cache l2.

Cand ajung acas' o sa incerc.

De fapt, cel putin la mine, calea este:

HKLMSystemCurrentControlSetControlSession ManagerMemory Management

scuze. nu aveam regeditu deschis

o sa descoperiti repede ca nu exista nici un spor de performanta

nici eu personal nu am simtit, dar multi sustin contrariul.

acea setare se refera la cache-ul level 2 de pe placa de baza, nu are legatura cu on-die cache-ul

SecondLevelDataCache records the size of the processor cache, also known as the secondary or L2 cache. If the value of this entry is 0, the system attempts to retrieve the L2 cache size from the Hardware Abstraction Layer (HAL) for the platform. If it fails, it uses a default L2 cache size of 256 KB. If the value of this entry is not 0, it uses this value as the L2 cache size. This entry is designed as a secondary source of cache size information for computers on which the HAL cannot detect the L2 cache.

This is not related to the hardware; it is only useful for computers with direct-mapped L2 caches. Pentium II and later processors do not have direct- mapped L2 caches. SecondLevelDataCache can increase performance by approximately 2 percent in certain cases for older computers with ample memory (more than 64 MB) by scattering physical pages better in the address space so there are not so many L2 cache collisions. Setting SecondLevelDataCache to 256 KB rather than 2 MB (when the computer has a 2 MB L2 cache) would probably have about a 0.4 percent performance penalty.

Source: http://support.micro...&NoWebContent=1

as I said ... none!

endless_point si daca mergea, cei 2% increase erau ceva fantastic. iti dai seama ce "zbura" un barton 2500+ ca un barton 2550+

cu aia 2 % compensa retransmiterile din ram catre restul

dar da il punem mai mult ce se intampla?

este ca atunci cand eu ma setez sa folosesc 100% din creier , dar de fapt tot aia 3% ii folosesc, ca asa este design-ul