Introduction

As we have seen in Chapter 9 the agent needs some information from the SeD to make an optimal scheduling. This information is a performance prediction of the SeD. The agent will ask the SeD to fill the data structure defined in Chapter 9 with the information it needs. The SeD returns the information and the agent can make the scheduling.
Performance prediction can be based on hardware information, the load of the SeD (the CPU load, the memory availability, etc.) or an advanced performance prediction can combine a set of basic performance predictions. Completely custom data can even be used for performance prediction, when using plugin schedulers. A performance prediction scheduler module named CoRI is available.
CoRI is described in Section 10.2.
In table 10.1 you can see which information is available by default with CoRI.

Table 10.1: Dependencies of the available information on the compiling options

always available:

TCOMP

FREECPU

FREEMEM

NBCPU

CPUSPEED

TOTALMEM

AVGFREECPU

BOGOMIPS

CACHECPU

TOTALSIZEDISK

FREESIZEDISK

DISKACCESREAD

DISKACCESWRITE

ALLINFOS

when compiled with -DDIET_USE_BATCH=ON

PARAL_NB_FREE_RESOURCES_IN_DEFAULT_QUEUE