Tester la vitesse de lecture de la mémoire RAM

hdparm -T /dev/sda [1]

/dev/sda:
Timing cached reads: 14480 MB in 2.00 seconds = 7257.39 MB/sec

man hdparm

Perform timings of cache reads for benchmark and comparison purposes. For meaningful results, this operation should be repeated 2-3 times on an otherwise inactive system (no other active processes) with at least a couple of megabytes of free memory. This displays the speed of reading directly from the Linux buffer cache without disk access. This measurement is essentially an indica‐ tion of the throughput of the processor, cache, and memory of the system under test.

Notes

[1] This command requires root priviledges