diff options
| author | Henrik Rydberg <rydberg@euromail.se> | 2008-10-19 05:27:43 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 17:52:35 +0200 |
| commit | 8c9398d1e9766e3659e277acb2e8ca1c17684139 (patch) | |
| tree | 160520c76c2dfbe89398b6c53aa8813e212abed3 /net/dccp | |
| parent | hwmon: applesmc: Add support for Macbook Pro 3 (diff) | |
| download | linux-8c9398d1e9766e3659e277acb2e8ca1c17684139.tar.xz linux-8c9398d1e9766e3659e277acb2e8ca1c17684139.zip | |
hwmon: applesmc: lighter wait mechanism, drastic improvement
The read fail ratio is sensitive to the delay between the first byte
written and the first byte read; apparently the sensors cannot be rushed.
Increasing the minimum wait time, without changing the total wait time,
improves the fail ratio from a 8% chance that any of the sensors fails in
one read, down to 0.4%, on a Macbook Air. On a Macbook Pro 3,1, the
effect is even more apparent. By reducing the number of status polls, the
ratio is further improved to below 0.1%. Finally, increasing the total
wait time brings the fail ratio down to virtually zero.
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Tested-by: Bob McElrath <bob@mcelrath.org>
Cc: Nicolas Boichat <nicolas@boichat.ch>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/dccp')
0 files changed, 0 insertions, 0 deletions