Callers of txg_wait_open() which set should_quiesce=B_TRUE should be
accounted for as iowait time. Otherwise, the caller is understood
to be idle and cv_wait_sig() is used to prevent incorrectly inflating
the system load average.
Similarly txg_wait_wait() has been updated to use cv_wait_io() to
be accounted against iowait.
Reviewed-by: Tim Chase <tim@chase2k.com>
Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-by: Matt Ahrens <mahrens@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#8550Closes#8558
f4e35b165c