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| author | Karel Zak <kzak@redhat.com> | 2007-03-20 00:32:37 +0100 |
|---|---|---|
| committer | Karel Zak <kzak@redhat.com> | 2007-03-20 00:32:37 +0100 |
| commit | 99c392d8ba163e35b9d562dd4bcf7dd476ad3573 (patch) | |
| tree | 3f6a3aa7805518129638b39442d1e48538b1d78a /tests | |
| parent | 51bc94930b9986571a359a3501ad5926de2b4847 (diff) | |
| download | util-linux-old-99c392d8ba163e35b9d562dd4bcf7dd476ad3573.tar.gz | |
hwclock: fix --systohc sets clock 0.5 seconds slow
quote from rh150493:
The kernel code, when setting the BIOS clock notes that the clock time
ticks to the next second 0.5 seconds after adjusting it (see
linux/arch/i386/kernel/time.c).
hwclock --systohc sets the CMOS clock at the 1 second boundry and thus
causes the clock to be wrong by 500ms each time it is reset. If the
clock is set every shutdown then the clock will have a reboot-count
related drift as well as the natural drift problems of the clock. Note
that this also mucks up the drift calculations, of course.
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'tests')
| -rwxr-xr-x | tests/ts-hwclock-systohc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/ts-hwclock-systohc b/tests/ts-hwclock-systohc index 522b597f..6171ab30 100755 --- a/tests/ts-hwclock-systohc +++ b/tests/ts-hwclock-systohc @@ -72,5 +72,5 @@ if [ "$DIFF" == "1" ]; then ts_failed "offset is $OFFSET" fi -ts_ok +ts_ok "offset is $OFFSET" |