On Tue, 30 Sep 2014 02:53:05 +0530, Ssagarr Patil said:
Is there any benchmarking tool to test read/write speed on Linux and which works on ARM ?
This is always a hairy problem. Do you care about the memory speed of the DIMM, or the actual *effective* memory speed? They can be very different, due to the effects of L1/2/3 cache (both positive if there's a cache hit, and negative if you need a cache line load, or if you need a line load that requires a cache line writeback first), whether or not you have a TLB active, and whether *that* has a hit or miss (which varies considerably if you're walking an array and hitting a miss every 4K bytes, versus walking a nest of pointers where you get a TLB miss almost every reference), and a bunch of other issues I lack the caffeine to enumerate... And of course, the *effective* speed (which is what you should probably care about rather than the *rated* speed) will differ based on workload due to the factors listed above....