kib 2008-09-23 11:56:07 UTC
FreeBSD src repository
Modified files:(Branch: RELENG_7)
sys/kern sched_ule.c
Log:
SVN rev 183294 on 2008-09-23 11:56:07Z by kib
MFC r180607 (by jeff):
Check whether we've recorded this tick in ts_ticks on another cpu in
jeff2008-07-19 05:13:47 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
SVN rev 180607 on 2008-07-19 05:13:47Z by jeff
- Check whether we've recorded this tick in ts_ticks on another cpu in
sched_tick() to prevent multiple increment
jeff2008-04-19 04:50:29 UTC
FreeBSD src repository
Modified files:(Branch: RELENG_7)
sys/kern sched_ule.c
Log:
MFC 1.220, 1.221, parts of 1.222
- Improve performance with heavy interrupt loads
- Fix compile with gcc3
- Fix timeslicing code for non
jeff2008-04-17 09:56:01 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Add a metric to describe how busy a processor has been over the last
two ticks by counting the number of switches and the load when
sched_clock() is called.
On Thursday 03 April 2008 09:04:43 pm Jeff Roberson wrote:
> jeff2008-04-04 01:04:43 UTC
>
> FreeBSD src repository
>
> Modified files:
> sys/kern sched_ule.c
> Log:
>- Don't check for the ITHD pri class in tdq_load_add and rem. 4BSD
> doesn't do this either. Sim
On Fri, 4 Apr 2008, Jeff Roberson wrote:
jeff2008-04-04 01:16:18 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Allow static_boost to specify no boost with '0', traditional kernel
fixed pri boost with '1' or any priority less than the cu
jeff2008-04-04 01:16:18 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Allow static_boost to specify no boost with '0', traditional kernel
fixed pri boost with '1' or any priority less than the current thread's
priority with a va
jeff2008-04-04 01:04:43 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Don't check for the ITHD pri class in tdq_load_add and rem. 4BSD doesn't
do this either. Simply check P_NOLOAD. It'd be nice if this was
in a thread flag s
jeff2008-03-19 07:36:37 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Remove some dead code and comments related to KSE.
- Don't set tdq_lowpri on every switch, it should be precisely maintained
now.
- Add some comments to sched_th
jhb 2008-03-14 15:22:38 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
Make the function prototype for cpu_search() match the declaration so that
this still compiles with gcc3.
Revision ChangesPath
1.233 +2 -2 src/sys/k
Jeff Roberson wrote:
On Mon, 10 Mar 2008, Aryeh M. Friedman wrote:
Jeff Roberson wrote:
jeff2008-03-10 22:48:27 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c Log:
- Fix the invalid priority panics people are seeing by forcing
tdq_runq_a
On Mon, 10 Mar 2008, Aryeh M. Friedman wrote:
Jeff Roberson wrote:
jeff2008-03-10 22:48:27 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c Log:
- Fix the invalid priority panics people are seeing by forcing
tdq_runq_add to select the runq
Jeff Roberson wrote:
jeff2008-03-10 22:48:27 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Fix the invalid priority panics people are seeing by forcing
tdq_runq_add to select the runq rather than hoping we set it properly
whe
jeff2008-03-10 22:48:27 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Fix the invalid priority panics people are seeing by forcing
tdq_runq_add to select the runq rather than hoping we set it properly
when we adjusted the priori
jeff2008-03-10 09:50:30 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Don't rely on a side effect of sched_prio() to set the initial ts_runq
for thread0. Set it directly in sched_setup(). This fixes traps on boot
seen on some
jeff2008-03-10 03:15:19 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
Reduce ULE context switch time by over 25%.
- Only calculate timeshare priorities once per tick or when a thread is woken
from sleeping.
- Keep the ts_runq p
jeff2008-03-10 01:32:01 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Add an implementation of sched_preempt() that avoids excessive IPIs.
- Normalize the preemption/ipi setting code by introducing
sched_shouldpreempt()
so the lo
On Sun, 2 Mar 2008, Julian Elischer wrote:
Peter Jeremy wrote:
Kris has done some excellent benchmarking as usual. Here you can see the
improvement in postgres depending on various scheduler debug settings:
http://people.freebsd.org/~kris/scaling/pgsql-16cpu.png
The improvement is quit
Peter Jeremy wrote:
Kris has done some excellent benchmarking as usual. Here you can see the
improvement in postgres depending on various scheduler debug settings:
http://people.freebsd.org/~kris/scaling/pgsql-16cpu.png
The improvement is quite substantial. Congratulations Jeff.
the dr
On Sat, Mar 01, 2008 at 10:29:50PM -1000, Jeff Roberson wrote:
>With these changes ULE is the only scheduler that supports the new cpuset
>api.
Excellent work. I didn't expect it to be implemented so quickly.
> It succeeds on 4BSD but the scheduler doesn't obey the masks. I don't
>presently h
On Sun, 2 Mar 2008, Jeff Roberson wrote:
jeff2008-03-02 08:20:59 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
Add support for the new cpu topology api:
- When searching for affinity search backwards in the tree from the last
cpu we ran o
jeff2008-03-02 08:20:59 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
Add support for the new cpu topology api:
- When searching for affinity search backwards in the tree from the last
cpu we ran on while the thread still has affinit
jeff2008-01-23 03:10:18 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- sched_prio() should only adjust tdq_lowpri if the thread is running or on
a run-queue. If the priority is numerically raised only change lowpri
if we're cert
jeff2008-01-15 09:03:09 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- When executing the 'tryself' branch in sched_pickcpu() look at the
lowest priority on the queue for the current cpu vs curthread's
priority. In the case that
jeff2008-01-05 04:47:31 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Restore timeslicing code for all bit SCHED_FIFO priority classes.
Reported by:Peter Jeremy <[EMAIL PROTECTED]>
Revision ChangesPath
1.221 +9 -1
wkoszek 2007-12-21 23:30:18 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
Make SCHED_ULE buildable with gcc3.
Reviewed by:cognet (mentor), jeffr
Approved by:cognet (mentor), jeffr
Revision ChangesPath
1.220 +17 -17
sam 2007-10-28 21:09:46 UTC
FreeBSD src repository
Modified files:(Branch: RELENG_7)
sys/kern sched_ule.c
Log:
MFC 1.215: enable use of ULE on arm
Approved by:re (kensmith)
Revision ChangesPath
1.214.2.1 +1 -1 src/sys/kern/sched
grehan 2007-10-23 00:52:25 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
sys/powerpc/conf GENERIC
sys/powerpc/powerpc genassym.c swtch.S vm_machdep.c
Log:
Cut over to ULE on PowerPC
kern/sched_ule.c - Add __powerpc__ to the list
sam 2007-10-16 19:25:27 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
ULE works fine on arm; allow it to be used
Reviewed by:jeff, cognet, imp
MFC after: 1 week
Revision ChangesPath
1.215 +1 -1 src/sys/ke
jeff2007-10-08 23:50:40 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Bail out of tdq_idled if !smp_started or idle stealing is disabled. This
fixes a bug on UP machines with SMP kernels where the idle thread
constantly switche
On Tue, 2 Oct 2007, Jeff Roberson wrote:
On Tue, 2 Oct 2007, Bruce Evans wrote:
Sorry I don't have time for a point by point on this one. Thank you for your
interesting analysis. From this I'm taking away a couple of things:
1) I've noticed that ULE relied on PREEMPTION for a long time a
On Tue, 2 Oct 2007, John Baldwin wrote:
On Tuesday 02 October 2007 09:49:34 am Bruce Evans wrote:
Apparently, there is a scaling bug for hz or extra interrupts for
the larger hz help, and the default preempt_thresh is not best.
-current on i386 and amd64 does a very poor job of scaling stathz
On Tue, 2 Oct 2007, Bruce Evans wrote:
On Mon, 1 Oct 2007, Jeff Roberson wrote:
On Tue, 2 Oct 2007, Bruce Evans wrote:
Further testing of my ~4BSD scheduler in ~5.2 indicates that when a
process wants less than about 1/loadavg of the CPU on average, it
usually just gets it, with no scheduli
On Tuesday 02 October 2007 09:49:34 am Bruce Evans wrote:
> Apparently, there is a scaling bug for hz or extra interrupts for
> the larger hz help, and the default preempt_thresh is not best.
-current on i386 and amd64 does a very poor job of scaling stathz and profhz
with hz, so this may explain
On Mon, 1 Oct 2007, Jeff Roberson wrote:
On Tue, 2 Oct 2007, Bruce Evans wrote:
Further testing of my ~4BSD scheduler in ~5.2 indicates that when a
process wants less than about 1/loadavg of the CPU on average, it
usually just gets it, with no scheduling delays, since it usually has
higher pr
On Mon, 1 Oct 2007, Bruce Evans wrote:
On Sun, 30 Sep 2007, Jeff Roberson wrote:
On Sat, 29 Sep 2007, Kevin Oberman wrote:
YMMV, but ULE seems to generally work better then 4BSD for interactive
uniprocessor systems. The preferred scheduler for uniprocessor servers
is less clear, but many te
On Tue, 2 Oct 2007, Bruce Evans wrote:
On Mon, 1 Oct 2007, Kevin Oberman wrote:
Date: Mon, 1 Oct 2007 21:26:39 +1000 (EST)
From: Bruce Evans <[EMAIL PROTECTED]>
On Mon, 1 Oct 2007, Jeff Roberson wrote:
Given that the overwhelming amount of feedback by qualified poeple, I
think
it's fair t
On Mon, 1 Oct 2007, Kevin Oberman wrote:
Date: Mon, 1 Oct 2007 21:26:39 +1000 (EST)
From: Bruce Evans <[EMAIL PROTECTED]>
On Mon, 1 Oct 2007, Jeff Roberson wrote:
Given that the overwhelming amount of feedback by qualified poeple, I think
it's fair to say that ULE gives a more responsive sys
On Mon, 1 Oct 2007, Bruce Evans wrote:
On Mon, 1 Oct 2007, Jeff Roberson wrote:
On Mon, 1 Oct 2007, Bruce Evans wrote:
On Sun, 30 Sep 2007, Jeff Roberson wrote:
On Sat, 29 Sep 2007, Kevin Oberman wrote:
YMMV, but ULE seems to generally work better then 4BSD for interactive
uniprocessor
jeff2007-10-02 01:30:18 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Reassign the thread queue lock to newtd prior to switching. Assigning
after the switch leads to a race where the outgoing thread still owns
the local queue l
jeff2007-10-02 00:36:06 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Move the rebalancer back into hardclock to prevent potential softclock
starvation caused by unbalanced interrupt loads.
- Change the rebalancer to work on stath
> Date: Mon, 1 Oct 2007 21:26:39 +1000 (EST)
> From: Bruce Evans <[EMAIL PROTECTED]>
>
> On Mon, 1 Oct 2007, Jeff Roberson wrote:
>
> > On Mon, 1 Oct 2007, Bruce Evans wrote:
> >
> >> On Sun, 30 Sep 2007, Jeff Roberson wrote:
> >>
> >>> On Sat, 29 Sep 2007, Kevin Oberman wrote:
> >>
> YMMV
On Mon, 1 Oct 2007, Jeff Roberson wrote:
On Mon, 1 Oct 2007, Bruce Evans wrote:
On Sun, 30 Sep 2007, Jeff Roberson wrote:
On Sat, 29 Sep 2007, Kevin Oberman wrote:
YMMV, but ULE seems to generally work better then 4BSD for interactive
uniprocessor systems. The preferred scheduler for unip
On Mon, 1 Oct 2007, Bruce Evans wrote:
On Sun, 30 Sep 2007, Jeff Roberson wrote:
On Sat, 29 Sep 2007, Kevin Oberman wrote:
YMMV, but ULE seems to generally work better then 4BSD for interactive
uniprocessor systems. The preferred scheduler for uniprocessor servers
is less clear, but many te
On Sun, 30 Sep 2007, Jeff Roberson wrote:
On Sat, 29 Sep 2007, Kevin Oberman wrote:
YMMV, but ULE seems to generally work better then 4BSD for interactive
uniprocessor systems. The preferred scheduler for uniprocessor servers
is less clear, but many test have shown ULE does better for those
s
On Sun, 30 Sep 2007, Peter Grehan wrote:
Hi Jeff,
ARM has it:
..
Did you verify that it works?
No. Olivier would be able to answer though.
If you can test ULE on UP arm/powerpc I'd appreciate it. Then we could
add them to the set of supported architectures in ULE.
Does arm support
Hi Jeff,
ARM has it:
..
Did you verify that it works?
No. Olivier would be able to answer though.
Does arm support SMP? It looks like it does not?
Don't think so.
For UP it doesn't need to wait for blocked lock to clear but it does
need to set td_lock. On UP there are no special s
On 9/30/07, Jeff Roberson <[EMAIL PROTECTED]> wrote:
> On Sat, 29 Sep 2007, Kevin Oberman wrote:
>
> >> Date: Sat, 29 Sep 2007 23:25:08 -0400
> >> From: "Ben Kaduk" <[EMAIL PROTECTED]>
> >> Sender: [EMAIL PROTECTED]
> >>
> >> On 9/29/07, Garance A Drosehn <[EMAIL PROTECTED]> wrote:
[snip]
> >>>
> >
On Sat, 29 Sep 2007, Kevin Oberman wrote:
Date: Sat, 29 Sep 2007 23:25:08 -0400
From: "Ben Kaduk" <[EMAIL PROTECTED]>
Sender: [EMAIL PROTECTED]
On 9/29/07, Garance A Drosehn <[EMAIL PROTECTED]> wrote:
At 4:39 PM + 9/27/07, Jeff Roberson wrote:
Modified files:
sys/kern s
On Thu, 27 Sep 2007, Peter Grehan wrote:
- Assert that we're not trying to compile ULE on an unsupported
architecture. To date, I believe only i386 and amd64 have implemented
the third cpu switch argument required.
ARM has it:
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/arm/ar
> Date: Sat, 29 Sep 2007 23:25:08 -0400
> From: "Ben Kaduk" <[EMAIL PROTECTED]>
> Sender: [EMAIL PROTECTED]
>
> On 9/29/07, Garance A Drosehn <[EMAIL PROTECTED]> wrote:
> > At 4:39 PM + 9/27/07, Jeff Roberson wrote:
> > >
> > > Modified files:
> > > sys/kern sched_ule.c
> > >
On 9/29/07, Garance A Drosehn <[EMAIL PROTECTED]> wrote:
> At 4:39 PM + 9/27/07, Jeff Roberson wrote:
> >
> > Modified files:
> > sys/kern sched_ule.c
> > Log:
> >- ...
> >- Assert that we're not trying to compile ULE on an unsupported
> > architecture. To date
At 4:39 PM + 9/27/07, Jeff Roberson wrote:
Modified files:
sys/kern sched_ule.c
Log:
- ...
- Assert that we're not trying to compile ULE on an unsupported
architecture. To date, I believe only i386 and amd64 have
implemented the third cpu switch argument
- Assert that we're not trying to compile ULE on an unsupported
architecture. To date, I believe only i386 and amd64 have implemented
the third cpu switch argument required.
ARM has it:
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/arm/arm/swtch.S?r1=1.20#rev1.20
PPC doesn't, t
jeff2007-09-27 16:39:27 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Honor the PREEMPTION and FULL_PREEMPTION flags by setting the default
value for kern.sched.preempt_thresh appropriately. It can still by
adjusted at runtime.
On Sat, Sep 22, 2007 at 02:20:14AM +, Jeff Roberson wrote:
> We may also want to consider never allowing positively niced
> processes to become interactive at all.
net-p2p/linuxdcpp AFAIK renices itself up to 1 yet still being,
naturally, an interactive app.
./danfe
__
jeff2007-09-24 00:28:55 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Bound the interactivity score so that it cannot become negative.
Approved by:re
Revision ChangesPath
1.209 +1 -1 src/sys/kern/sched_ule.c
jeff2007-09-22 02:20:14 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Improve grammar. s/it's/its/.
- Improve load long-term load balancer by always IPIing exactly once.
Previously the delay after rebalancing could cause problems
jeff2007-08-20 06:34:20 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Set steal_thresh to log2(ncpus). This improves idle-time load balancing
on 2cpu machines by reducing it to 1 by default. This improves loaded
operation on 8
jeff2007-08-04 01:21:29 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Fix one line that erroneously crept in my last commit.
Approved by:re
Revision ChangesPath
1.204 +0 -1 src/sys/kern/sched_ule.c
__
jeff2007-08-03 23:38:46 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Share scheduler locks between hyper-threaded cores to protect the
tdq_group structure. Hyper-threaded cores won't really benefit from
seperate locks anyway.
jeff2007-07-19 20:03:15 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Refine the load balancer to improve buildkernel times on dual core
machines.
- Leave the long-term load balancer running by default once per second.
- Enable
jeff2007-07-19 19:51:45 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- When newtd is specified to sched_switch() it was not being initialized
properly. We have to temporarily unlock the TDQ lock so we can lock
the thread and add
On 7/17/07, Jeff Roberson <[EMAIL PROTECTED]> wrote:
jeff2007-07-17 22:53:24 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
ULE 3.0: Fine grain scheduler locking and affinity improvements. This has
been in development for over 6 months a
jeff2007-07-17 22:53:24 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
ULE 3.0: Fine grain scheduler locking and affinity improvements. This has
been in development for over 6 months as SCHED_SMP.
- Implement one spin lock per thread-q
jeff2007-06-15 19:33:58 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Fix an off by one error in sched_pri_range.
- In tdq_choose() only assert that a thread does not have too high a
priority (low value) for the queue we removed i
jeff2007-06-05 02:53:51 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Define TDQ_ID() for the !SMP case.
- Default pick_pri to off. It is not faster in most cases.
Revision ChangesPath
1.194 +2 -1 src/sys/kern/sch
kmacy 2007-04-20 05:45:47 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
Schedule the ithread on the same cpu as the interrupt
Tested by: kmacy
Submitted by: jeffr
Revision ChangesPath
1.192 +1 -2 src/sys/kern/sched_
In message: <[EMAIL PROTECTED]>
Jeff Roberson <[EMAIL PROTECTED]> writes:
:
: On Sat, 17 Mar 2007, Max Laier wrote:
:
: > On Saturday 17 March 2007 20:09, Jeff Roberson wrote:
: >> Any language lawyers care to comment on this?
: >
: > I find this strange. According to the spec "(Decr
jeff2007-03-17 23:32:48 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Handle the case where slptime == runtime.
Submitted by: Atoine Brodin
Revision ChangesPath
1.191 +5 -1 src/sys/kern/sched_ule.c
On Sat, 17 Mar 2007, Jeff Roberson wrote:
Any language lawyers care to comment on this?
Don't all C programmers know this? :)
On Sat, 17 Mar 2007, Jeff Roberson wrote:
jeff2007-03-17 18:13:33 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
Max Laier schrieb:
On Saturday 17 March 2007 20:09, Jeff Roberson wrote:
Any language lawyers care to comment on this?
I find this strange. According to the spec "(Decrementing is equivalent
to subtracting 1.)", but "pri = --pri % RQ_NQS;" will behave like you
expect, while "pri = (pri - 1)
On Sat, 17 Mar 2007, Max Laier wrote:
On Saturday 17 March 2007 20:09, Jeff Roberson wrote:
Any language lawyers care to comment on this?
I find this strange. According to the spec "(Decrementing is equivalent
to subtracting 1.)", but "pri = --pri % RQ_NQS;" will behave like you
expect, whi
On Saturday 17 March 2007 20:09, Jeff Roberson wrote:
> Any language lawyers care to comment on this?
I find this strange. According to the spec "(Decrementing is equivalent
to subtracting 1.)", but "pri = --pri % RQ_NQS;" will behave like you
expect, while "pri = (pri - 1) % RQ_NQS;" clearly d
Any language lawyers care to comment on this?
On Sat, 17 Mar 2007, Jeff Roberson wrote:
jeff2007-03-17 18:13:33 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Cast the intermediate value in priority computtion back down to
unsigned char.
jeff2007-03-17 18:13:33 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Cast the intermediate value in priority computtion back down to
unsigned char. Weirdly, casting the 1 constant to u_char still produces
a signed integer resu
* Alfred Perlstein <[EMAIL PROTECTED]> [070126 14:34] wrote:
> * Jeff Roberson <[EMAIL PROTECTED]> [070125 19:47] wrote:
> >
> > On Thu, 25 Jan 2007, Jeff Roberson wrote:
> >
> > >jeff2007-01-25 23:52:00 UTC
> > >
> > > FreeBSD src repository
> > >
> > > Modified files:
> > > sys/kern
* Jeff Roberson <[EMAIL PROTECTED]> [070125 19:47] wrote:
>
> On Thu, 25 Jan 2007, Jeff Roberson wrote:
>
> >jeff2007-01-25 23:52:00 UTC
> >
> > FreeBSD src repository
> >
> > Modified files:
> > sys/kern sched_ule.c
> > Log:
> > - Implement much more intelligent ipi sendin
On Thu, 25 Jan 2007, Jeff Roberson wrote:
jeff2007-01-25 23:52:00 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Implement much more intelligent ipi sending. This algorithm tries to
minimize IPIs and rescheduling when scheduling like ta
jeff2007-01-25 23:52:00 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Implement much more intelligent ipi sending. This algorithm tries to
minimize IPIs and rescheduling when scheduling like tasks while keeping
latency low for
jeff2007-01-25 19:14:12 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Get rid of the unused DIDRUN flag. This was really only present to
support sched_4bsd.
- Rename the KTR level for non schedgraph parsed events. They take even
jeff2007-01-24 18:18:43 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- With a sleep time over 2097 seconds hzticks and slptime could end up
negative. Use unsigned integers for sleep and run time so this doesn't
disturb sched_int
On Wed, 24 Jan 2007, David Xu wrote:
Jeff Roberson wrote:
On Wed, 24 Jan 2007, David Xu wrote:
Jeff Roberson wrote:
if idlethread is preempted, who will clear its idle bit in
idle_cpus_mask ?
idle_cpus_mask was broken before for all schedulers. This commit didn't
change that. ULE doe
Jeff Roberson wrote:
On Wed, 24 Jan 2007, David Xu wrote:
Jeff Roberson wrote:
if idlethread is preempted, who will clear its idle bit in
idle_cpus_mask ?
idle_cpus_mask was broken before for all schedulers. This commit
didn't change that. ULE doesn't use idle_cpus_mask and it's
idlet
On Wed, 24 Jan 2007, David Xu wrote:
Jeff Roberson wrote:
if idlethread is preempted, who will clear its idle bit in idle_cpus_mask
?
idle_cpus_mask was broken before for all schedulers. This commit didn't
change that. ULE doesn't use idle_cpus_mask and it's idlethread doesn't
set or cl
Jeff Roberson wrote:
if idlethread is preempted, who will clear its idle bit in
idle_cpus_mask ?
idle_cpus_mask was broken before for all schedulers. This commit didn't
change that. ULE doesn't use idle_cpus_mask and it's idlethread doesn't
set or clear it. The idle thread for the other
On Wed, 24 Jan 2007, David Xu wrote:
On Tuesday 23 January 2007 16:50, Jeff Roberson wrote:
jeff2007-01-23 08:50:34 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Catch up to setrunqueue/choosethread/etc. api changes.
- Define our
On Tuesday 23 January 2007 16:50, Jeff Roberson wrote:
> jeff2007-01-23 08:50:34 UTC
>
> FreeBSD src repository
>
> Modified files:
> sys/kern sched_ule.c
> Log:
>- Catch up to setrunqueue/choosethread/etc. api changes.
>- Define our own maybe_preempt() as sche
jeff2007-01-23 08:50:34 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Catch up to setrunqueue/choosethread/etc. api changes.
- Define our own maybe_preempt() as sched_preempt(). We want to be able
to preempt idlethread in all cas
jeff2007-01-20 21:24:05 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Disable the long-term load balancer. I believe that steal_busy works
better and gives more predictable results.
Revision ChangesPath
1.182 +1 -1
jeff2007-01-20 17:03:33 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- We do need to IPI the idlethread on some systems. It may be stuck in
a power saving mode otherwise.
- If the thread is already bound in sched_bind() unbind it
On Sat, 20 Jan 2007, Jeff Roberson wrote:
jeff2007-01-20 09:03:43 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- In tdq_transfer() always set NEEDRESCHED when necessary regardless of
the ipi settings. If NEEDRESCHED is set and an ipi is
jeff2007-01-20 09:03:43 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- In tdq_transfer() always set NEEDRESCHED when necessary regardless of
the ipi settings. If NEEDRESCHED is set and an ipi is later delivered
it will clear it
jeff2007-01-19 21:56:08 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
Major revamp of ULE's cpu load balancing:
- Switch back to direct modification of remote CPU run queues. This added
a lot of complexity with questionable gain. I
jeff2007-01-06 12:33:43 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Don't let SCHED_TICK_TOTAL() return less than hz. This can cause integer
divide faults in roundup() later if it is able to return 0. For some
reason this bu
jeff2007-01-06 08:44:13 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Fix the sched_priority() invalid priority bugs. Use roundup() instead
of max() when computing the divisor in SCHED_TICK_PRI(). This prevents
cases where rou
jeff2007-01-06 02:34:23 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Don't IPI unless we're going to interrupt something exiting in the kernel.
otherwise we can afford the latency. This makes a significant performance
improvem
jeff2007-01-05 23:45:38 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Fix a comparison in sched_choose() that caused cpus to be constantly
marked idle, thus breaking cpu load balancing.
- Change sched_interact_update() to fix case
jeff2007-01-05 08:50:38 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- ftick was initialized to -1 for init and any of it's children. Fix this by
setting ftick = ltick = ticks in schedinit().
- Update the priority when we are pull
jeff2007-01-04 12:16:19 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Only allow the tdq_idx to increase by one each tick rather than up to
the most recently chosen index. This significantly improves nice
behavior. This allows
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