L2 cache is enabled, no monitor connected USB interrupts are disabled (echo 1 > /sys/devices/platform/bcm2708_usb/bussuspend) ssvb-membench v0.1.9 (simple benchmark for memory throughput and latency) =================================================================== == Memory bandwidth tests (non-aliased buffers) == == == == Note 1: 1MB = 1000000 bytes == == Note 2: Results for 'copy' tests show how many bytes can be == == copied per second (adding together read and writen == == bytes would have provided twice higher numbers) == =================================================================== C copy backwards : 98.62 MB/s C copy : 102.65 MB/s C copy prefetched (32 bytes step) : 189.99 MB/s C copy prefetched (64 bytes step) : 189.94 MB/s C copy via tmp buffer : 92.72 MB/s C copy via tmp buffer prefetched (32 bytes step) : 134.62 MB/s C copy via tmp buffer prefetched (64 bytes step) : 134.62 MB/s C fill : 207.84 MB/s --- standard memcpy : 223.32 MB/s standard memset : 207.84 MB/s --- ARM fill (STRD) : 207.84 MB/s ARM fill (STM with 8 registers) : 1103.68 MB/s ARM fill (STM with 4 registers) : 1486.42 MB/s ARM copy prefetched : 379.81 MB/s ========================== == Memory latency test === ========================== block size : read access time (single random read / dual random read) 2 : 0.0 ns / 0.0 ns 4 : 0.0 ns / 0.0 ns 8 : 0.0 ns / 0.0 ns 16 : 0.0 ns / 0.0 ns 32 : 0.0 ns / 0.0 ns 64 : 0.0 ns / 0.0 ns 128 : 0.0 ns / 0.0 ns 256 : 0.0 ns / 0.0 ns 512 : 0.0 ns / 0.0 ns 1024 : 0.0 ns / 0.0 ns 2048 : 0.0 ns / 0.0 ns 4096 : 0.0 ns / 0.0 ns 8192 : 0.0 ns / 0.0 ns 16384 : 0.1 ns / 0.2 ns 32768 : 30.3 ns / 49.4 ns 65536 : 49.6 ns / 71.2 ns 131072 : 61.9 ns / 82.4 ns 262144 : 126.5 ns / 198.0 ns 524288 : 220.5 ns / 385.3 ns 1048576 : 267.9 ns / 483.3 ns 2097152 : 291.6 ns / 533.8 ns 4194304 : 303.6 ns / 559.3 ns 8388608 : 309.6 ns / 572.4 ns 16777216 : 317.0 ns / 587.8 ns 33554432 : 338.4 ns / 630.5 ns 67108864 : 371.9 ns / 697.7 ns --------------------------------------------------------------------- $ 7za b 7-Zip (A) 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18 p7zip Version 9.20 (locale=en_GB.UTF-8,Utf16=on,HugeFiles=on,1 CPU) RAM size: 208 MB, # CPU hardware threads: 1 RAM usage: 107 MB, # Benchmark threads: 1 Dict Compressing | Decompressing Speed Usage R/U Rating | Speed Usage R/U Rating KB/s % MIPS MIPS | KB/s % MIPS MIPS 22: 231 100 225 224 | 4880 100 440 440 23: 221 100 225 225 | 4804 100 440 439 ---------------------------------------------------------------- Avr: 100 225 225 100 440 440 Tot: 100 333 332