I/O bound, what is it, and what can be done about it?
conathan at gmail.com
Sun Sep 11 17:51:49 PDT 2011
Something I have been thinking about, My computer can be near
unusable if I am doing too much I/O tasks at once (let's say writing
0's to one drive, while running a backup on another [using two hard
drives]). Programs that do not use hard drives at all are almost
[and if you are curious why I was doing that, Was recovering data
from a dying harddrive for a friend, and wanted to ensure the "new"
ancient harddrive (40GB) I salvaged was stable].
Compared to earlier systems, my machine feels like a powerhouse (AMD
890GX w/ Integrated Graphics, Phenom ][ 945 processor [X4, 3GHz], 4GB
1333mhz Ram, 60GB OCZ Vertex 2 SSD). Was surprised when I realized I
can slow it down without even using the processor.
although, i recall my AMD Duron 800Mhz system felt like a powerhouse
as well... but mycommon workload seems to consist of openbox,
firefox, urxvt, vim, and compiling software packages.
What am I seeing? What defines the limit of I/O Traffic on a system?
Nathan Coulson (conathan)
Location: British Columbia, Canada
Timezone: PST (-8)
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