5 ms·
I ran this on a Linux laptop - it looks like it's running qemu-user-static: root 9934 103 0.0 125444 6664 pts/0 Rl+ 12:25 0:12 /usr/bin/qem
by bmalehorn 6y ago
I ran this on a Linux laptop - it looks like it's running qemu-user-static:
root 9934 103 0.0 125444 6664 pts/0 Rl+ 12:25 0:12 /usr/bin/qemu-aarch64-static /usr/bin/gzip
So it might be that Docker already runs a native x86_64 Linux, then uses qemu-static binary translation.
- sirn 6y agoThat's strange, in my experience it shouldn't have 6x slowdown. Probably might be due to several factors, but here's your test, running on my system without Docker: Ryzen 3900X (host machine) $ dd if=/dev/urandom bs=4k count=10k | gzip >/dev/null 10240+0 records in 10240+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 1.02284 s, 41.0 MB/s qemu-aarch64-static $ dd if=/dev/urandom bs=4k count=10k | proot -R /tmp/aarch64-alpine -q qemu-aarch64-static sh -c 'gzip >/dev/null' 10240+0 records in 10240+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 3.33964 s, 12.6 MB/s