Test disk read and write speed?

Installation Home Assistant OS
1

Hi there,

Does anyone know how to test read and write speeds?

I just migrated to SSD and would like to know if it made any difference?

I tested with: sync; dd if=/dev/zero of=~/test.tmp bs=500K count=1024 but all I got was this:

~ $  sync; dd if=/dev/zero of=~/test.tmp bs=500K count=1024
1024+0 records in
1024+0 records out
~ $

Any thought on how to rest it?

2

I would be interested to make that measure as well.
So far I have found this benchmark: https://storage.jamesachambers.com/ with simple command to run. Unfortunately I think it will not run from HassOS. For test to make RPi needs to be booted up with “normal” linux OS.

3

At least one way is to use the dd command

From the host os:

dd if=/dev/sda of=/mnt/data/supervisor/tmp/temp.img bs=8k count=256k
rm /mnt/data/supervisor/tmp/temp.img

The output for my ssd is

2147483648 bytes (2.0GB) copied, 20.917460 seconds, 97.9MB/s
4

dd command from HA OS does not display the speed sadly…

I am also searching for a solution ot measure disk speed from HA OS.

5

Same here unfortunatelly. I haven’t found a correct way to test this

# dd if=/dev/zero of=/tmp/output bs=8k count=10k; rm -f /tmp/output
10240+0 records in
10240+0 records out
6
7

This is how I tested:

# dd if=/dev/zero of=/mnt/data/temp.img bs=8k count=256k
262144+0 records in
262144+0 records out
2147483648 bytes (2.0GB) copied, 2.226857 seconds, 919.7MB/s
8

I upgraded to Gen 3 PCIe NMVE and get about 100Mb/s write and 220MB/s read one a RPi4. You have great values/results. Any idea why or how you got these values?

9

if its Gen 3 then your read and write shouldn’t be that low. I didn’t do anything extra. I hope your SSD supports up to that speed.