Hello everybody,
based on the thread "[RFC] Migration to MariaDB" in arch-dev-public by
Bartłomiej Piotrowski I started playing with MySQL and MariaDB. I noticed
both were polling every second:
<... futex resumed> ) = -1 ETIMEDOUT (Connection timed out)
futex(0x1d48050, FUTEX_WAKE_PRIVATE, 1) = 0
gettimeofday({1361806174, 246573}, NULL) = 0
futex(0x1d4808c, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME,
2849, {1361806175, 246573000}, ffffffff
Searching Google I found that the problem may be caused by the leap second,
though the load is not as high as some articles describe. (Continues polling
vs. one poll a second.)
However the polling stops as soon as I manually set the time with date -s and
it start again if I run ntpdate to sync the time. As this is a notebook I
rebooted more than once since the leap second happened. ;)
What is going on? This is a mobile system, so it would be great to get rid of
mysqld eating my battery power.
--
main(a){char*c=/* Schoene Gruesse */"B?IJj;MEH"
"CX:;",b;for(a/* Chris get my mail address: */=0;b=c[a++];)
putchar(b-1/(/* gcc -o sig sig.c && ./sig */b/42*2-3)*42);}