Disk speeds

posted on 09:47 AM on Monday 20 March 2023

Decided to updated on the disk speeds that were reported in 20200128 2143 Disk speeds.

This time, this is a MacBook Pro 14”, 2021 which is using the M1 Max chip.

> time sh -c "dd if=/dev/zero of=test bs=1G count=10 oflag=sync && sync"
10+0 records in
10+0 records out
10737418240 bytes transferred in 3.684017 secs (2914595193 bytes/sec)
sh -c "dd if=/dev/zero of=test bs=1G count=10 oflag=sync && sync"  0.00s user 2.74s system 59% cpu 4.575 total

This is a whopping 2,780 MB/s write speed which is quite insane. Nearly double of the 2019 MacBook Pro 15”.

Did it again on the server which has 8 x 6TB ZFS.

time sh -c "dd if=/dev/zero of=test bs=1G count=10 oflag=dsync && sync"
10+0 records in
10+0 records out
10737418240 bytes (11 GB, 10 GiB) copied, 24.8699 s, 432 MB/s

real    0m25.055s
user    0m0.006s
sys     0m4.820s

Slightly better than the last time which is 312MB probably due to some optimisation in ZFS. The hardware is the same.