DragonFlyBSD

:Hi all,
:
:i'm currently porting conky (a nice system monitor utility) to dfly, and
:when running the binary i'm constantly incurring in following livelock:
:
:lwkt_setcpu_remote: td->td_flags 00800621
:lwkt_setcpu_remote: td->td_flags 00800621
:lwkt_setcpu_remote: td->td_flags 00800621
:...

Shoot, I had hoped those were fixed.  At this point I think I'm going
    to have to rewrite the mechanism entirely by adding some assembly to
    deal with the case in the thread switch code.

-Matt

On Thu, 24 Mar 2011 09:45:01 -0700 (PDT)
Matthew Dillon <dillon@apollo.backplane.com> wrote:

Shoot, I had hoped those were fixed. At this point I think I'm going
to have to rewrite the mechanism entirely by adding some assembly to
deal with the case in the thread switch code.

Is there any likelihood that this is related to my LWKT_WAIT_IPIQ
panic http://bugs.dragonflybsd.org/issue2004 ?

Hi Steve,

i get too on boot sporadically 'M_NOWAIT kmalloc failed, trying
M_WAITOK', but just under VirtualBox environment. Didn't mentioned it,
as i saw no link with livelock problem.

On 3/24/2011, "Steve O'Hara-Smith" <steve@sohara.org> wrote:

On Thu, 24 Mar 2011 09:45:01 -0700 (PDT)
Matthew Dillon <dillon@apollo.backplane.com> wrote:

Shoot, I had hoped those were fixed. At this point I think I'm going
to have to rewrite the mechanism entirely by adding some assembly to
deal with the case in the thread switch code.

Is there any likelihood that this is related to my LWKT_WAIT_IPIQ
panic http://bugs.dragonflybsd.org/issue2004 ?

--
Steve O'Hara-Smith | Directable Mirror Arrays
C:>WIN | A better way to focus the sun
The computer obeys and wins. | licences available see
You lose and Bill collects. | http://www.sohara.org/

I have pushed work to master that should hopefully fix the problem,
please test!

-Matt
                    Matthew Dillon 
                    <dillon@backplane.com>

: Is there any likelihood that this is related to my LWKT_WAIT_IPIQ
:panic http://bugs.dragonflybsd.org/issue2004 ?
:
:--
:Steve O'Hara-Smith | Directable Mirror Arrays

Possibly, but that code is another pool of mud that could have its
    own issues still.

-Matt
                    Matthew Dillon 
                    <dillon@backplane.com>

:Hi Steve,
:
:i get too on boot sporadically 'M_NOWAIT kmalloc failed, trying
:M_WAITOK', but just under VirtualBox environment. Didn't mentioned it,
:as i saw no link with livelock problem.

This is unrelated to the livelocks and probably harmless.  It's another
    area (the tty clist buffer code) which needs revamping to remove the
    memory allocation requirements.

-Matt
                    Matthew Dillon 
                    <dillon@backplane.com>

I've been seeing this too but didn't report it because it didn't seem to be
hurting anything.

Tim

On Thu, Mar 24, 2011 at 2:49 PM, Matthew Dillon <dillon@apollo.backplane.com

wrote:

:Hi Steve,
:
:i get too on boot sporadically 'M_NOWAIT kmalloc failed, trying
:M_WAITOK', but just under VirtualBox environment. Didn't mentioned it,
:as i saw no link with livelock problem.

This is unrelated to the livelocks and probably harmless. It's another
area (the tty clist buffer code) which needs revamping to remove the
memory allocation requirements.

-Matt
Matthew Dillon
<dillon@backplane.com>

Hi Matt,

Thanks for the fast fix! Unfortunately following hunk breaks buildworld:

index 91ccb23..180dadf 100644
--- a/sys/vm/vm_map.h
++ b/sys/vm/vm_map.h
@ -75,6 +75,9 @
#ifndef SYS_TYPES_H
#include <sys/types.h>
#endif
#ifndef SYS_KERNEL_H
#include <sys/kernel.h>
#endif
#ifndef SYS_TREE_H
#include <sys/tree.h>
#endif

as in sys/kernel.h:

#ifndef _KERNEL
#error "This file should not be included by userland programs."
#else

I'm not familiar with build infrastucture, so i have to stop here.

On Thu, 24 Mar 2011 14:45:36 -0700 (PDT)
Matthew Dillon <dillon@apollo.backplane.com> wrote:

I have pushed work to master that should hopefully fix the problem,
please test!

-Matt
Matthew Dillon
<dillon@backplane.com>

:Hi Matt,
:
:Thanks for the fast fix! Unfortunately following hunk breaks buildworld:

All right, I think I've fixed it in master.  It looks like one of the
   userland libraries also wanted to use the inlines in vm_map.h.

-Matt

On Thu, 24 Mar 2011 14:47:37 -0700 (PDT)
Matthew Dillon <dillon@apollo.backplane.com> wrote:

: Is there any likelihood that this is related to my LWKT_WAIT_IPIQ
:panic http://bugs.dragonflybsd.org/issue2004 ?
:
:--
:Steve O'Hara-Smith | Directable Mirror Arrays

Possibly, but that code is another pool of mud that could have its
own issues still.

Now confirmed not to be related, I'm still getting the panics and
the ssh freezes.

Hi Matt,

running stable with VKERNEL :) (please note uptime below)
I will make tomorrow evening more extensive 'real world' testing with
atom D510 mobo.

Again, many thanks for the quick fix!!

And so looks conky like with ncurses interface (some values are still not
correct...)

DragonFly v2.9.1.974.g7dc51-DEVELOPMENT on i386

Uptime: 7h 24m 47s
RAM Usage: 34.6MiB/61.5MiB - 56% ######____
Swap Usage: 0B/0B - No swap% ___
CPU: 52% #####____
CPU 0: 52% #####_____
CPU 1: 100% #####_____
Processes: 19 Running: 0

File systems:
/ 272MiB/1.97GiB #_________
Networking:
Up: 0B - Down: 0B

Name PID CPU% MEM%
conky 990 0.54 3.94
sendmail 653 0.00 3.37
sendmail 657 0.00 3.34
csh 735 0.00 2.89

On 3/25/2011, "Matthew Dillon" <dillon@apollo.backplane.com> wrote:

:Hi Matt,
:
:Thanks for the fast fix! Unfortunately following hunk breaks buildworld:

All right, I think I've fixed it in master. It looks like one of the
userland libraries also wanted to use the inlines in vm_map.h.

-Matt

Hi Matt,

application causing livelock ran stable the whole night and still on :)
It's solved (for me), many thanks again!

On Fri, 25 Mar 2011 21:45:26 +0000
"Matthew Dillon \(via DragonFly issue tracker\)" <bugs@crater.dragonflybsd.org> wrote:

Matthew Dillon <dillon@apollo.backplane.com> added the comment:

:Hi Matt,
:
:Thanks for the fast fix! Unfortunately following hunk breaks buildworld:

All right, I think I've fixed it in master. It looks like one of the
userland libraries also wanted to use the inlines in vm_map.h.

-Matt

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<http://bugs.dragonflybsd.org/issue2035>
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