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- Restore dropping the priority of syncer down to PPAUSE when it is idle.

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This was lost when it was converted to using a condition variable instead
  of lbolt.
- Drop the priority of flowtable down to PPAUSE when it is idle as well
  since it is a similar background task.

MFC after:	2 weeks
This commit is contained in:
John Baldwin 2011-01-06 22:17:07 +00:00
parent 6226ec3ef8
commit a8f4344f08
2 changed files with 12 additions and 0 deletions
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7
sys/kern/vfs_subr.c
View File

@ -65,6 +65,7 @@ __FBSDID("$FreeBSD$");
#include <sys/namei.h>
#include <sys/priv.h>
#include <sys/reboot.h>
#include <sys/sched.h>
#include <sys/sleepqueue.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
@ -1880,6 +1881,12 @@ sched_sync(void)
* matter as we are just trying to generally pace the
* filesystem activity.
*/
if (syncer_state != SYNCER_RUNNING ||
time_uptime == starttime) {
thread_lock(td);
sched_prio(td, PPAUSE);
thread_unlock(td);
}
if (syncer_state != SYNCER_RUNNING)
cv_timedwait(&sync_wakeup, &sync_mtx,
hz / SYNCER_SHUTDOWN_SPEEDUP);

5
sys/net/flowtable.c
View File

@ -1549,9 +1549,11 @@ static void
flowtable_cleaner(void)
{
VNET_ITERATOR_DECL(vnet_iter);
struct thread *td;
if (bootverbose)
log(LOG_INFO, "flowtable cleaner started\n");
td = curthread;
while (1) {
VNET_LIST_RLOCK();
VNET_FOREACH(vnet_iter) {
@ -1566,6 +1568,9 @@ flowtable_cleaner(void)
* is arbitrary
*/
mtx_lock(&flowclean_lock);
thread_lock(td);
sched_prio(td, PPAUSE);
thread_unlock(td);
flowclean_cycles++;
cv_broadcast(&flowclean_f_cv);
cv_timedwait(&flowclean_c_cv, &flowclean_lock, flowclean_freq);