<s>
CrystalDiskMark	B-Language
is	O
an	O
open	B-License
source	I-License
disk	O
drive	O
benchmark	O
tool	O
for	O
Microsoft	B-Application
Windows	I-Application
from	O
Crystal	O
Dew	O
World	O
.	O
</s>
<s>
Based	O
on	O
Microsoft	O
's	O
MIT-licensed	O
Diskspd	B-Language
tool	O
,	O
this	O
graphical	O
benchmark	O
is	O
commonly	O
used	O
for	O
testing	O
the	O
performance	O
of	O
solid-state	B-Device
storage	I-Device
.	O
</s>
<s>
It	O
works	O
by	O
reading	O
and	O
writing	O
through	O
the	O
filesystem	B-Application
in	O
a	O
volume-dependent	O
way	O
.	O
</s>
<s>
It	O
generates	O
read/write	O
speeds	O
in	O
sequential	O
and	O
random	O
positions	O
with	O
varying	O
numbers	O
of	O
queues	O
and	O
threads	B-Operating_System
.	O
</s>
<s>
Solid-state	B-Device
drives	I-Device
tend	O
to	O
excel	O
at	O
random	O
IO	O
,	O
as	O
unlike	O
hard	B-Device
drives	I-Device
,	O
they	O
do	O
not	O
need	O
to	O
seek	O
for	O
the	O
specific	O
position	O
to	O
read	O
from	O
or	O
write	O
to	O
.	O
</s>
<s>
There	O
is	O
a	O
macOS	B-Operating_System
clone	O
version	O
of	O
it	O
called	O
AmorphousDiskMark	O
developed	O
by	O
Katsura	O
Shareware	O
,	O
named	O
after	O
the	O
non-crystalline	O
amorphous	O
state	O
of	O
solids	O
.	O
</s>
<s>
Like	O
CrystalDiskMark	B-Language
,	O
this	O
tool	O
is	O
designed	O
with	O
an	O
emphasis	O
around	O
solid	O
state	O
devices	O
,	O
supporting	O
NVMe	B-Application
connections	O
in	O
addition	O
to	O
the	O
usual	O
PATA	B-Protocol
and	O
SATA	O
.	O
</s>
<s>
It	O
is	O
a	O
port	O
of	O
CrystalDiskMark	B-Language
for	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
published	O
by	O
Katsura	O
Shareware	O
,	O
developed	O
by	O
Twitter	O
user	O
polydron	O
.	O
</s>
<s>
It	O
is	O
a	O
memory	O
benchmarking	O
programme	O
for	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
that	O
uses	O
CrystalDiskMark	B-Language
's	O
user	O
interface	O
.	O
</s>
<s>
Suisho	O
Shizuku	O
(	O
)	O
,	O
illustrated	O
by	O
Kirino	O
Kasumu	O
(	O
)	O
of	O
Hermit	O
Penguin	O
,	O
produced	O
by	O
Bellche	O
Tachibana	O
(	O
)	O
,	O
and	O
voiced	O
by	O
Hiromi	O
Igarashi	O
of	O
Mausu	O
Promotion.	O
,	O
is	O
Crystal	O
Dew	O
World'''s	O
first	O
mascot	O
,	O
introduced	O
in	O
CrystalDiskMark	B-Language
3.0.2	O
in	O
2012-10-26	O
as	O
separate	O
release.Software	O
>	O
CrystalDiskMark	B-Language
>	O
History	O
The	O
character	O
's	O
own	O
web	O
site	O
was	O
announced	O
in	O
2014-01-10.水晶雫.com	O
The	O
character	O
's	O
Twitter	O
account	O
was	O
opened	O
in	O
December	O
2013	O
Japan	O
time	O
,	O
but	O
was	O
only	O
announced	O
in	O
2014-08-28.公式	O
Twitter	O
開設	O
!!	O
</s>
<s>
Virtual	O
salesperson	O
android	O
Tsukumo	O
Tokka	O
(	O
)	O
,	O
a	O
Virtual	O
Cast	O
Shopping	O
(	O
)	O
(	O
Project	O
White	O
Co.	O
,	O
Ltd.	O
'	O
s	O
online	O
channel	O
)	O
mascot	O
designed	O
by	O
?,	O
was	O
the	O
third	O
mascot	O
used	O
in	O
Crystal	O
Dew	O
World	O
's	O
software	O
,	O
introduced	O
in	O
CrystalDiskMark	B-Language
8.0.2	O
(	O
2020-06-01	O
)	O
.	O
</s>
