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OpenZFS 6672 - arc_reclaim_thread() should use gethrtime() 

6672 arc_reclaim_thread() should use gethrtime() instead of ddi_get_lbolt()

Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Approved by: Dan McDonald <danmcd@omniti.com>
Ported-by: David Quigley <dpquigl@davequigley.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/6672
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/571be5c
Closes #4600
This commit is contained in:
David Quigley 2016-05-06 12:35:52 -04:00 committed by Brian Behlendorf
parent 4b2a3e0c9d
commit ae6d0c601e
2 changed files with 14 additions and 5 deletions
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9
lib/libspl/include/sys/time.h
View File

@ -58,6 +58,15 @@
#define NSEC2MSEC(n) ((n) / (NANOSEC / MILLISEC))
#endif
#ifndef NSEC2SEC
#define NSEC2SEC(n) ((n) / (NANOSEC / SEC))
#endif
#ifndef SEC2NSEC
#define SEC2NSEC(m) ((hrtime_t)(m) * (NANOSEC / SEC))
#endif
typedef long long hrtime_t;
typedef struct timespec timestruc_t;
typedef struct timespec timespec_t;

10
module/zfs/arc.c
View File

@ -3430,7 +3430,7 @@ static void
arc_reclaim_thread(void)
{
fstrans_cookie_t cookie = spl_fstrans_mark();
clock_t growtime = 0;
hrtime_t growtime = 0;
callb_cpr_t cpr;
CALLB_CPR_INIT(&cpr, &arc_reclaim_lock, callb_generic_cpr, FTAG);
@ -3454,7 +3454,7 @@ arc_reclaim_thread(void)
* Wait at least zfs_grow_retry (default 5) seconds
* before considering growing.
*/
growtime = ddi_get_lbolt() + (arc_grow_retry * hz);
growtime = gethrtime() + SEC2NSEC(arc_grow_retry);
arc_kmem_reap_now();
@ -3473,7 +3473,7 @@ arc_reclaim_thread(void)
}
} else if (free_memory < arc_c >> arc_no_grow_shift) {
arc_no_grow = B_TRUE;
} else if (ddi_get_lbolt() >= growtime) {
} else if (gethrtime() >= growtime) {
arc_no_grow = B_FALSE;
}
@ -3506,8 +3506,8 @@ arc_reclaim_thread(void)
* even if we aren't being signalled)
*/
CALLB_CPR_SAFE_BEGIN(&cpr);
(void) cv_timedwait_sig(&arc_reclaim_thread_cv,
&arc_reclaim_lock, ddi_get_lbolt() + hz);
(void) cv_timedwait_hires(&arc_reclaim_thread_cv,
&arc_reclaim_lock, SEC2NSEC(1), MSEC2NSEC(1), 0);
CALLB_CPR_SAFE_END(&cpr, &arc_reclaim_lock);
}
}