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bug#15578: Parameter -d or --direct to open files with flag O_DIRECT?
From: |
Kyle Sallee |
Subject: |
bug#15578: Parameter -d or --direct to open files with flag O_DIRECT? |
Date: |
Wed, 9 Oct 2013 21:49:21 -0700 |
Please forgive the inconvenience.
Attaching a gzipped patch file
ensures the integrity of patch file content.
I should have presented only the idea
rather than a patch for the implementation.
I concur dd is already suited to the task.
Please consider
| sed 's/^/if=/' | xargs -r --max-lines=1 dd iflag=direct # in contrast
with
| xargs -r --max-lines=4096 cat -d --
Invoking dd 466059 times costs only a slight performance decrease
as compared with invoking cat 114 times.
However, this example probably represents rare usage for cat.
Thanks for granting the time and consideration.