On 2020-01-09 06:22, Hamd wrote:
Joe, are you a joke? Please stop insulting me, this is not
my/your_personal_fancy_forum.

This will be my last post here in misc.

Default setups, no config. changes.
Just patches installed.
Same hardware.

FreeBSD:
freebsd@test:~ # time sh -c "dd if=/dev/zero of=test.tmp bs=4k count=50000
&& sync"
50000+0 records in
50000+0 records out
204800000 bytes transferred in 0.239590 secs (854792500 bytes/sec)
0.000u 0.195s 0:00.25 76.0%     22+198k 0+1568io 0pf+0w

Result: *854.79 MB/s disk speed*

freebsd@test:~ # uname -a
FreeBSD test.local 12.1-RELEASE-p1 FreeBSD 12.1-RELEASE-p1 GENERIC  amd64

OpenBSD:
test$ time sh -c "dd if=/dev/zero of=test.tmp bs=4k count=50000 && sync"
50000+0 records in
50000+0 records out
204800000 bytes transferred in 12.303 secs (16645247 bytes/sec)
     0m12.32s real     0m00.13s user     0m01.28s system

Result: *16.64 MB/s disk speed*


[snip]

probook$ dd if=/dev/zero of=test.tmp bs=4k count=50000 && sync
50000+0 records in
50000+0 records out
204800000 bytes transferred in 0.731 secs (280047607 bytes/sec)

I'm getting well over 250MB/s on my laptop.

Is your hard drive attached as an sd or wd device?


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