1, strace on gdm-binary
exec strace -e futex -fttT -o /tmp/gdm.trace gdm-binary $CONFIG_FILE
2, many tests show long time delay found in futex() syscall, such as
before:
1486 00:48:26.075713 futex(0x1baa75c, FUTEX_WAIT_PRIVATE, 1, {14, 999571869}
<unfinished ...>
1486 00:49:07.075534 <... futex resumed> ) = -1 ETIMEDOUT (Connection timed
out) <40.999668>
1557 00:49:07.927275 futex(0x85ff64, FUTEX_WAIT_PRIVATE, 1, {14, 999938584}
<unfinished ...>
1557 00:49:22.927398 <... futex resumed> ) = -1 ETIMEDOUT (Connection timed
out) <15.000000>
2122 00:49:22.095977 futex(0xa70804, FUTEX_WAIT_PRIVATE, 1, {14, 999908364}
<unfinished ...>
2122 00:49:37.096099 <... futex resumed> ) = -1 ETIMEDOUT (Connection timed
out) <15.000000>
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https://bugs.launchpad.net/bugs/784421
Title:
natty slow boot on pandaboard(rev A1)
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