Apple Xserve - Apple Xserve Diagnostics (Version 3X103) Instrukcja Użytkownika Pobierz pdf (Strona 34)

34 Appendix AXD Tools Test Reference

Memory (Multicore) Tests

Multicore memory tests test the first 2.5 GB of memory using all available CPU cores.

In AXD EFI tools, all memory tests (simple, multicore, and extended) are grouped under

Memory tests.

Note: The time required to complete memory tests correlates to the size of memory

being tested. These estimates are based on testing 1 GB of memory.

Memory (Extended) Tests

Extended memory tests test all available memory.

In AXD EFI tools, all memory tests (simple, multicore, and extended) are grouped under

Memory tests.

Note: The time required to complete memory tests correlates to the size of memory

being tested. These estimates are based on testing 1 GB of memory

Walking Spread Bit 32 5 minutes Walks 0b01 up and then walks 0b10

down memory

Walking Bit Flip 32 5 minutes Alternates words with walking 1 and

walking 0, and then alternates with

walking 0 and walking 1

Test Estimated completion time Description

MP Block Checkerboard 32 5 seconds Alternates 32-bit words with all 1s and

all 0s, and then with all 0s and all 1s

MP Bit Checkerboard 32 5 seconds Alternates bits with all 1s and all 0s,

and then with all 0s and all 1s

MP Sequential Byte Block 32 8 minutes Fills all bytes sequentially with

patterns starting at 0x00 and ending

at 0xFF

MP Walking One 32 2 minutes Walks 1s up and down memory

MP Walking Zero 32 2 minutes Walks 0s up and down memory

MP Walking Spread Bit 32 2 minutes Walks 0b01 up and then walks 0b10

down memory

MP Walking Bit Flip 32 2 minutes Alternates words with walking 1 and

walking 0, and then alternates words

with walking 0 and walking 1

Test Estimated completion time Description

Extended Memory Test P00F 5 seconds Tests memory using pattern 0. This

fails if an error occurs.

Extended Memory Test P01F 5 seconds Tests memory using pattern 1. This

fails if an error occurs.

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