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| author | Ed Cashin <ecashin@coraid.com> | 2012-12-18 01:03:49 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-18 02:15:24 +0100 |
| commit | 5f0c9c48e7265039c3f945aaf44a1c6ae8adbd01 (patch) | |
| tree | 2eb73358dc9ad58dce32dd40ceb0fbc938d915d4 /drivers/block/aoe/aoechr.c | |
| parent | aoe: manipulate aoedev network stats under lock (diff) | |
| download | linux-5f0c9c48e7265039c3f945aaf44a1c6ae8adbd01.tar.xz linux-5f0c9c48e7265039c3f945aaf44a1c6ae8adbd01.zip | |
aoe: use high-resolution RTTs with fallback to low-res
These changes improve the accuracy of the decision about whether it's time
to retransmit an AoE command by using the microsecond-resolution
gettimeofday instead of jiffies.
Because the system time can jump suddenly, the decision reverts to using
jiffies if the high-resolution time difference is relatively large.
Otherwise the AoE targets could be considered failed inappropriately.
Signed-off-by: Ed Cashin <ecashin@coraid.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block/aoe/aoechr.c')
0 files changed, 0 insertions, 0 deletions