svn commit: r196904 - head/sys/geom
Alexander Motin
mav at FreeBSD.org
Sun Sep 6 19:33:13 UTC 2009
Author: mav
Date: Sun Sep 6 19:33:13 2009
New Revision: 196904
URL: http://svn.freebsd.org/changeset/base/196904
Log:
MFp4:
Remove msleep() timeout from g_io_schedule_up/down(). It works fine
without it, saving few percents of CPU on high request rates without
need to rearm callout twice per request.
Modified:
head/sys/geom/geom_io.c
Modified: head/sys/geom/geom_io.c
==============================================================================
--- head/sys/geom/geom_io.c Sun Sep 6 19:06:50 2009 (r196903)
+++ head/sys/geom/geom_io.c Sun Sep 6 19:33:13 2009 (r196904)
@@ -567,7 +567,7 @@ g_io_schedule_down(struct thread *tp __u
if (bp == NULL) {
CTR0(KTR_GEOM, "g_down going to sleep");
msleep(&g_wait_down, &g_bio_run_down.bio_queue_lock,
- PRIBIO | PDROP, "-", hz/10);
+ PRIBIO | PDROP, "-", 0);
continue;
}
CTR0(KTR_GEOM, "g_down has work to do");
@@ -672,7 +672,7 @@ g_io_schedule_up(struct thread *tp __unu
}
CTR0(KTR_GEOM, "g_up going to sleep");
msleep(&g_wait_up, &g_bio_run_up.bio_queue_lock,
- PRIBIO | PDROP, "-", hz/10);
+ PRIBIO | PDROP, "-", 0);
}
}
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