name=4kQD32read -bs=4k -iodepth=32 -rw=randread \ because the filesystems being compared might not be the same).Īn example based on replicating the output in the screenshot above supplemented by information from the CrystalDiskMark manual (this isn't complete but should give the general idea): fio -loops=5 -size=1000m -filename=/mnt/fs/fiotest.tmp -stonewall -ioengine=libaio -direct=1 \ As such it will always have filesystem overhead in it (not necessarily a bad thing but something to be aware of e.g. Note that despite its name CrystalDiskMark is actually a benchmark of a filesysystem on a particular disk - it can't do I/O raw to the disk alone.
I'd say fio would have no trouble producing those workloads. For my particular benchmarking see my other question. So this is the only motivation for the question. While surfing in the web about ssd's and benchmarking I have often seen users posting their CrystelDiskMark results in forums. But that's another question ( Best way to benchmark different encryption solutions on my system).
LC_ALL=C dd if=tempfile of=/dev/null bs=1M count=1024īut I am not sure about the dd parameters.įor the random 512KB, 4KB, 4KB (Queue Depth=32) reads/writes speed-tests I don't have any idea how to reproduce the measurements in linux? So how can I do this?įor testing reading speeds something like sudo hdparm -Tt /dev/sda doesn't seem to make sense for me since I want for example benchmark something like encfs I should write something about the motivation about this question: I am trying to benchmark my ssd and compare some encryption solutions. Sudo su -c "echo 3 > /proc/sys/vm/drop_caches"
So how can I measure approximately the same things as crystaldiskmark does?įor the first row (Seq) I think I could do something like LC_ALL=C dd if=/dev/zero of=tempfile bs=1M count=1024 conv=fdatasync,notrunc I want to benchmark a ssd (possibly with encrypted filesystems) and compare it to benchmarks done by crystaldiskmark on windows.
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