And USB 2.0 hard limit is 60MB/s.
i have never seen USB 2.0 exceeding 35MB/s write and 40MB/s read.
even when connecting SATA disk over USB-SATA bridge.
60MB/s is wire speed. USB have enormous protocol overhead.
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i have never seen USB 2.0 exceeding 35MB/s write and 40MB/s read.
That means I essentially got what I wanted- as
high read output as possible on USB 2.0. Thanks.
Indeed 35MB/s-40MB/s is common reported maximum
throughput.
dd if=/dev/zero of=/dev/da0 bs=64k count=1
newfs_msdosfs /dev/da0
On Mon, 23 Jul 2012 03:02:56 -0700 (PDT)
Jakub Lach articulated:
What I previously meant is that I had such pendrive, that
without former formatting in Windows, didn't even show
up as device in FreeBSD- was completely useless.
That does not mean I didn't newfs_msdosfsed it after
that in
However, after formatting it in Windows why duplicate it again in
FreeBSD?
Just to check if it works as should, also trim sectors and whatever.
Format without partition table?
But in this case, no 1 reason was probably most important.
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However, after formatting it in Windows why duplicate it again in
FreeBSD? It serves no purpose that I am aware of. By the way, it is too
bad that FreeBSD is not able to take advantage of the exFat format
fusefs-exfat in ports
still i don't really care, i would reformat in as FAT32 anyway.
Format without partition table?
yes. Windows recognizes it properly except Win98/95 (which doesn't work
with large USB drives anyway).
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To
What I previously meant is that I had such pendrive, that
without former formatting in Windows, didn't even show
up as device in FreeBSD- was completely useless.
the result of XXI century way of programming - flash translator firmware
in that case.
They don't even read specs about USB
Hi,
On Monday 23 July 2012 17:48:50 Jerry wrote:
On Mon, 23 Jul 2012 03:02:56 -0700 (PDT)
Jakub Lach articulated:
What I previously meant is that I had such pendrive, that
without former formatting in Windows, didn't even show
up as device in FreeBSD- was completely useless.
That
This could be deducted, but I will add for clarity, that I
bought USB 3.0 pendrive to use in 2.0 port, to take
advantage of 2.0 to the fullest (as 2.0 pendrives have
slow flashes inside).
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which actually works with FreeBSD just ripped from
package! (normal _empty_ FAT filesystem, no
garbageware added, no need to format).
zero difference. newfs_msdos take a moment.
It actually bounces from 40MB/s limit when reading
from it.
Writing is about 18MB/s.
Device is supposed to be
18MB/s write is figure from few
dd if=/dev/zero of=/dev/da0 bs=1 to 15M
runs, 13-14MB/s from actual files copied
in mc to flash and 36-39MB/s file copied
from flash to hdd in mc.
dd if=/dev/da0 of=/dev/zero bs=15m
gives 33MB/s read.
Speaking of advertisements, yes I know
but USB 3.0 drives
On Sun, Jul 22, 2012 at 4:20 PM, Jakub Lach jakub_l...@mailplus.pl wrote:
Hi,
I was fortunate enough to buy USB 3.0 pendrive,
which actually works with FreeBSD just ripped from
package! (normal _empty_ FAT filesystem, no
garbageware added, no need to format).
It actually bounces from
Speaking of misunderstanding, that's certainly
possible.
How much overhead is normal and alternatively,
why in FreeBSD USB 2.0 reports as 40MB/s and
not other arbitrary number.
I hope I didn't sound like PLEASE HELP I WANT
USB 3.0 SPEEDS ON USB 2.0...
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On Sun, Jul 22, 2012 at 6:05 PM, Jakub Lach jakub_l...@mailplus.pl wrote:
Speaking of misunderstanding, that's certainly
possible.
How much overhead is normal and alternatively,
why in FreeBSD USB 2.0 reports as 40MB/s and
not other arbitrary number.
The overhead includes many different
Apparently my speeds are pretty decent,
as this this advertised speed relates to
read speed, and write one is pretty weak.
People are reporting
62-70MB/s read and
17-31MB/s write.
Are you saying that disk clearly bumping
from 40MB/s read barrier (as I saw in midnight
commander is my
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