[dm-crypt] unusual writing speeds when benchmark speeds are high enough

Arno Wagner arno at wagner.name
Mon Mar 18 00:07:46 CET 2013


On Sun, Mar 17, 2013 at 05:36:19PM -0400, .. ink .. wrote:
> Sorry for my previous email without a title,resending the email with a
> title this time.
[...]
> A user of cryptsetup(through zuluCrypt) asked me a question i can not
> answer and asking it here.
> 
> [root <at> sheep 8] ~ > dd if=/dev/zero of=test.img bs=70M count=1
> 1+0 Datensätze ein
> 1+0 Datensätze aus
> 73400320 Bytes (73 MB) kopiert, 2,58497 s, 28,4 MB/s
[...]

Is this over USB or on an USB memory-stick? If this is a
regular HDD, something seems to be slowing it down already.

Arno
-- 
Arno Wagner,     Dr. sc. techn., Dipl. Inform.,    Email: arno at wagner.name
GnuPG: ID: CB5D9718  FP: 12D6 C03B 1B30 33BB 13CF  B774 E35C 5FA1 CB5D 9718
----
One of the painful things about our time is that those who feel certainty
are stupid, and those with any imagination and understanding are filled
with doubt and indecision. -- Bertrand Russell


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