)
causes target to reboot.
Device /dev/cuau0 is used for the serial port. On the host it goes
through the local socket /tmp/com_1
All with FreeBSD 10 (trunk) amd64, virtualbox 4.2.16
Yuri
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.
sysctl debug.kdb.enter=1 also causes the above behavior as if panic has
occurred.
Is it possible to make DDB kick in while running as VM?
Yuri
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of ZFS lacks zones.
Yuri
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On 08/07/2013 01:56, Wojciech Puchar wrote:
not possible in FreeBSD with UFS.
but if you run virtualbox under linux i cannot say much...
This happened with FreeBSD guest with UFS (journaled soft-updates) and
FreeBSD host.
What is out of normal, it rolled back for many hours (~20).
Yuri
Xorg, I had to kill it and
reboot. VirtualBox processes got killed in the process.
Yuri
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sys_select(struct thread *td, struct select_args *uap)
arg1 in DTrace script should correspond to uap argument of sys_select,
and dereferencing should always produce an int.
Yuri
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. But when it reads
/compat/linux/dev/mounts in order to find /dev/shm (linux shm_open(3)
function), it sees the wrong paths there and fails. It can't statfs the
mount point.
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and host app reads through
symbolic links. It might also be assuming that it runs on the same host
and maybe is unable to connect to X server other than through the shared
memory.
Such functionality can be made optional through some sysctl variable.
Yuri
'~'}
Yuri
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' and 'power_resume'.
But it is possible that memory gets damaged somewhere else after
power_resume happens.
Do you have any thought/suggestions?
Yuri
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On 07/16/2013 08:07, John Baldwin wrote:
Can you go to frame 8 and do 'l' in kgdb?
(kgdb) up 8
#8 0x80baea78 in vm_pageout () at /usr/src/sys/vm/vm_pageout.c:829
829 if (!VM_OBJECT_TRYLOCK(object)
(kgdb) l
824 if (!vm_pageout_page_lock(m,
) p *m
No symbol m in current context.
even though kernel was built with makeoptions DEBUG=-g, same for
other symbols there.
Is there a way to identify when and by whom the page has been allocated?
Yuri
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On 07/18/2013 13:52, John Baldwin wrote:
Are you in frame 8?
Yes.
Yuri
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On 07/18/2013 13:52, John Baldwin wrote:
Are you in frame 8?
For some reason the debug info is missing in frame 8, but is present in
surrounding frames 7 and 9.
The might be a bug in makefiles that debug flag isn't passed into
sys/vm/ directory.
Yuri
: pagedaemon) doadump (textdump=value
optimized out) at pcpu.h:234
How to find the cause of the crash?
Yuri
--- kgdb log ---
# kgdb /boot/kernel/kernel vmcore.0
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License
On 07/15/2013 00:22, Yuri wrote:
How to find the cause of the crash?
I added WITNESS and related options and next crash produced such messages:
Jul 15 03:25:53 satellite kernel: panic: Bad link elm 0xfe00b780d000
next-prev != elm
Jul 15 03:25:53 satellite kernel: cpuid = 1
Jul 15 03:25
clarify the issue.
Yuri
--- error log ---
1072726016/8061945856 (13.3%) @0.0x, remaining 86:00 RBU 100.0% UBU 100.0%
1072726016/8061945856 (13.3%) @0.0x, remaining 86:19 RBU 100.0% UBU 100.0%
1072726016/8061945856 (13.3%) @0.0x, remaining 86:45 RBU 100.0% UBU 100.0%
1072726016/8061945856 (13.3
(my_curbrk_ptr)
:: %rax, %rdx);
...
}
I get a warning:
/usr/bin/ld: warning: type and size of dynamic symbol
`.curbrk@@FBSDprivate_1.0' are not defined
What is the correct way to declare .curbrk in in-place assembly?
Yuri
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__sbrk, and they just use it to conenct
to the original sbrk. But there is no such thing of FreeBSD.
Yuri
static inline void* do_sbrk(intptr_t increment) {
void* curbrk = 0;
#if defined(__x86_64__) || defined(__amd64__)
# ifdef PIC
__asm__ __volatile__(
movq .curbrk@GOTPCREL(%%rip
should be ignored?
9.1-STABLE amd64
valgrind-3.8.0_1,1
Yuri
---helgrind log---
==6736== Thread #1: lock order 0x282B150 before 0x282B190 violated
==6736==
==6736== Observed (incorrect) order is: acquisition of lock at 0x282B190
==6736==at 0x155AA4F: pthread_mutex_trylock (hg_intercepts.c:550
values around 3400% and then it goes down to
the values below 1% for the rest of the run:
50619 yuri 206 200 621M 555M uwait 7 0:31 0.68% myapp
In the end, after all threads have quit, process measures its resources
with getrusage(RUSAGE_SELF, u); and it shows that CPU time
like /dev/dtrace/io don't exist?
Maybe some extra-options are required for ustack() to work? If this is
the case this should be mentioned in wiki.
Yuri
# kldstat
Id Refs AddressSize Name
3 16 0x81861000 84c0 opensolaris.ko
44 0x8186a000 53a00
that static empty
functions with 'noinline' attributes get eliminated by the optimizer.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56099
Yuri
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::xxx_my_trace:entry
{
printf(xxx_my_trace);
}
It does print the following, but nothing else:
dtrace: script './dt.d' matched 1 probe
Adding __attribute__((noinline)) doesn't help.
What is the problem? Why dtrace sensors aren't invoked?
Yuri
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, _IOWR do validation based on the size
of structure supplied to them. So that the handler procedures don't have
to do that.
I was expecting to find among them some macro that would work for such
variable size structure, but it isn't there. (Not sure if this is
possible language-wise).
Yuri
this.
Yuri
Index: sys/kern/sys_generic.c
===
--- sys/kern/sys_generic.c (revision 245654)
+++ sys/kern/sys_generic.c (working copy)
@@ -640,6 +640,7 @@
int arg, error;
u_int size;
caddr_t data
is set, so all 3 bits would mean _IORWE.
And arbitrarily high parameter size can be explicitly limited in
sys_generic.c to IOCPARM_MAX.
Yuri
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disk
priority won't affect the other processes at all.
Yuri
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to overload the system call like this would be in linux?:
extern C void* __sbrk(ptrdiff_t increment);
extern C void* sbrk(intptr_t increment) {
return__sbrk(increment);
}
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. It looks like in their test FreeBSD behaved in
somewhat impaired way.
Any ideas what can I try to tune?
Yuri
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On 11/06/2012 11:10, Samuel J. Greear wrote:
Single and multi-socket hardware are not really directly comparable in
PostgreSQL tests.
So if the CPUs are split between sockets, would such system generally
perform better or worse with PostgeSQL vs. non-split situation?
Yuri
to the level of ~88% of linux with 80 clients.
Yuri
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load in case such older disks are
in use? If yes, why there is such dependency?
Yuri
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On 10/29/2012 00:27, Yuri wrote:
Unfortunately the root disk on this machine is attached to ata3 and
isn't visible when 'device ATA_CAM' is commented out. (mountroot
prompt shows up on boot only listing ahci-compatible disks).
Actually BIOS has the option to present SATA as AHCI, so
: Exec format error
with system log having an error: link_elf_obj: symbol ata_controlcmd
undefined
What is wrong with atapicam?
I need atapicam because section 23.3.3 of handbook suggests that it is a
prerequisite for being able to use DVD drive from the vbox guests.
Yuri
9.1-RC3
, your choice.
So you are saying I can't keep BSD MBR and boot linux from under it when
linux uses grub2?
Is it still possible to still use lilo? I vaguely remember that it used
to work like this.
Yuri
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is: why the disk can't be open RW under root?
The secondary issue is the bug in fdisk: once -a option is supplied and
it can't open it RW it should just say so, and not suggest using gpart
because gpart will probably have the same issue.
Yuri
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nvidia card?
I did send the bug report to NVidia's address
freebsd-gfx-b...@nvidia.com. So far no response.
I am not sure how such one way, secretive, PR handling works in general
for any product. So not sure how NVidia can manage it. No way to track
the issue with NVidia.
Yuri
should also just get the newer nvidia card
and shut up, not sure.
Yuri
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On 08/25/2012 13:11, Andriy Gapon wrote:
options KDB
options KDB_TRACE
options KDB_UNATTENDED
KDB and KDB_TRACE are on by default in 9.1 that I am running.
Yuri
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On 04/16/2012 06:59, John Baldwin wrote:
I'm fine with putting it into the base. If so, we should import 1.2 first I
think and then apply the 1.3 patch.
So are there plans to import it into the base? Maybe for 9.1?
/usr/ports/sysutils/pstack is still i386 only.
Yuri
is that the kernel is built for
DTrace. But DTrace was never used in the sessions that had a freeze.
What is the way to diagnose this problem?
CPU: i7 CPU 920 @ 2.67GHz
Memory: 24GB
MB: P2T
Yuri
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On 07/31/2012 17:50, Mark Saad wrote:
Yuri
Install sysutils/mcelog and try running the example included . While not a
complete definitative hardware test it can report other hardware issues that
memtest86+ misses and it can be run on line in multiuser mode and via cron .
Thanks
. make search seems to search through
package names, dependency names, but not command names for some reason.
Maybe this would be the reasonable feature to implement first instead of
changing the missing command handlers in shells.
Yuri
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by the user.
Such implementation should leave all parties happy. People who hate it
just wouldn't install this port.
Yuri
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, is there a for example bugzilla or other bug reporting system
for this?
In addition, I observe system hangup for a few seconds when running
glxinfo. Also I observe Xorg freeze when I run nvidia-settings.
So I have to run 285.05.09 from cvs instead.
Yuri
fixed this issue on any
platform where xorg is running.
Yuri
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. This
essentially about doubles the number of system calls that any X app makes.
Yuri
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to it a succeeding one.
And this dtrace script only shows one failed open(2) call, not two as
you would expect if errno was indeed preserved between them.
So maybe there is some magic to it in dtrace functionality.
Someone more familiar with the matter maybe can explain this.
Yuri
in simple test app, because
poll_for_response is called during XFlush when it is nothing to actually
read.
So some of libX11 code should be changed to only call poll when response
is expected.
Otherwise it looks like poll indeed returns xorg socket as being ready.
Yuri
On 07/01/2012 13:27, Adrian Chadd wrote:
Hm, can you try it with an xorg TCP socket versus an xorg UNIX socket
and see if the behaviour differs?
TCP connection exhibits exactly the same behavior.
Yuri
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come from kdeinit4 but some also from kwin, chrome and
even Xorg itself.
Rate of failure for read(2) calls is ~2500/sec systemwide.
This is of course not a deadly problem.
But is this situation considered to be normal?
Yuri
--- dtrace script---
!/usr/bin/perl
use Getopt::Std;
#
# Defaults
.
Maybe the OP has done the same thing and not realized it?
Unfortunately, that's not the case. I wish it was.
Yuri
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to 295.05.09 from Feb 11, 2012 fixed the problem.
9400GT
I can't believe this is only my problem. I think the version should be
rolled back until the problem is fixed.
Yuri
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On 05/27/2012 10:01, David Wolfskill wrote:
So, at least in my case, I respectfully disagree with the assessment in
the Subject.
i386 is one difference (I use amd64)
FX 770M is another difference (I use 9400GT)
I also have everything updated with the similar portmaster command.
Yuri
: can't unload file: Device busy
Something is different with snd_usound.ko
Yuri
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What is wrong with snd_uaudio?
Yuri
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When I run 'make' on the following makefile, $@ gets printed but $ doesn't.
Why?
Yuri
--- Makefile ---
file-out: file-in
@echo target= $@ src= $; touch $@
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allow anyone to take over such project.
They suggest to fork.
So will you object if I create a new project on SF, say bsd-pstack-new,
will import the current source and apply your patch and make a release?
I will also update pstack port so that it will become current.
Yuri
On 04/15/2012 02:30, Konstantin Belousov wrote:
It seems that the license is two-clause BSD.
My opinion is that such tool should be imported into the base.
I agree, this is the best option. This is a very low level tool,
somewhat similar to or extending procstat(1).
Yuri
is happening? Why cp and ls hanged?
I think, cp -R hanged first and later ls is waiting on some op initiated
by cp -R.
Somehow, cp -R managed to hang itself.
How can I find out what cp is waiting on?
9.0-STABLE amd64
Yuri
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I created a PR for this: http://www.freebsd.org/cgi/query-pr.cgi?pr=166851
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, commit the change and
make a release.
It's better than to keep private patches.
Yuri
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, af61795, bfbfe500, bfbfe540) +
9013
0x81c6452 _init (0, 0, bfbfe518, 81c63a7, 2, bfbfe540) + 8fba
0x81c63a7 _init (3791afd0, 2, bfbfe540, 0, 0, 0) + 8f0f
0x81c6318 _init (bfbfe6d0, bfbfe6f1, 0, bfbfe6ff, bfbfe762, bfbfe7b8)
+ 8e80
Yuri
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, I wonder, is this because there is some
alternative in FreeBSD that I don't know about, or it is primarily due
to the lack of interest/resources?
I don't take gdb as alternative since it is not single line, and also it
has some threading issues of its own.
Yuri
On 03/31/2012 14:22, Jason Hellenthal wrote:
procstat(1)
I don't see which key of procstat(1) displays this information.
The closest key is:
-k Display the stacks of kernel threads in the process
It shows kernel threads, but no user space stacks. How can I get user
space stacks?
Yuri
from here.
Yuri
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to attach (?).
DTrace is only activated particular sensors are crossed.
So is there such a tool/command?
Yuri
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it
supposed to mix all inputs no matter how many? It usually works fine
with many apps playing sound at the same time.
What exactly is the condition that causes sound device to become busy?
Driver in use is snd_es137x.
fstat /dev/dsp doesn't show who opened sound device for some reason.
Yuri
. But when the same /usr/local/bin
is in the end of the path it works fine.
I also noticed that in 9.0 gcc is 4.2.1 and in 8.2 gcc is 4.2.2, which
may be related.
What might be a problem with this?
Yuri
--- testcase ---
#!/bin/sh
echo conftest.c __END__
/* confdefs.h */
#ifdef __STDC__
time I tried I got system crash). These make it
very difficult to use FreeBSD on the laptops. Major usability issues.
Yuri
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.
Is this likely a bug in nvidia driver that it locks up the system when a
lot of OpenGL operations are in progress? Or what might be a problem?
Yuri
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is closed source and ships with many binaries. But code
immediately interacting with kernel is open and it does call DELAY and
also tsleep(9)
Yuri
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window effects.
Yuri
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On 01/03/2012 09:13, John Baldwin wrote:
I can't tell how recent your kernel/world are though from your message to see
if you have both of these changes.
My kernel/userland were from Aug 17, 2011. Probably before the change in
question.
I will retest with the latest 8.2.
Yuri
or at least issue a warning?
Yuri
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On 08/06/2011 02:11, Alexander Best wrote:
On Fri Aug 5 11, Yuri wrote:
I have the process that first runs in 3 threads but later two active
threads exit.
top(1) shows this moment this way (1 sec intervals):
30833 yuri3 760 4729M 4225M nanslp 4 0:32 88.62% app
30833 yuri
I have the process that first runs in 3 threads but later two active
threads exit.
top(1) shows this moment this way (1 sec intervals):
30833 yuri3 760 4729M 4225M nanslp 4 0:32 88.62% app
30833 yuri3 760 4729M 4225M nanslp 6 0:34 90.92% app
30833
.
No static lease files present: /var/db/dhclient.leases.*.
dhcpcd has no problem setting up re0 on thisn host.
This happens on the router DLink DIR-601 with the latest firmware.
8.2-STABLE amd64
Yuri
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On 07/27/2011 12:06, Adam Vande More wrote:
Do you have a /etc/dhclient.conf on the box?
Reject statement was there.
Sorry, forgot about this file, it was there for 5 years for unknown reason.
Thank you,
Yuri
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Abort trap: 6
Also the target process is killed too:
Killed: 9
8.2-STABLE amd64
Yuri
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top(1) shows the load as a number supposedly equal to the resource queue
length.
But is there a way to detail this information? For example I want the
system to log which requests to which files by which process/thread are
in the queue and when they are fulfilled by the scheduler?
Yuri
TIMECPU
COMMAND
9390 yuri3 440 508M 246M STOP3 0:00 200.00%
VirtualBox
...
8.2-STABLE
Yuri
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?
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.
Yuri
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and apple both connect to
it fine.
What might be causing such weird behavior?
Is this a known problem?
Any way to troubleshoot this?
Yuri
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it relate to portmaster and portupgrade packages, which both
have (or include) supposedly the same functionality?
Yuri
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pthread_cond_signal, or it will just
return 0? In the latter case, how can I distinguish signal delivery and
successful return?
Yuri
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in their man pages?
Yuri
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exactly one thread. So the users won't need to have any special cycles
like you suggested in your previous post.
What is the underlying reason for POSIX to define it this way and for
OSes to implement it this way?
Yuri
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exactly the same.
I think man page should be expanded to give more comprehensive explanation.
Yuri
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pthread_cond_signal call crashes, and the only reasonable
explanation so far is that more than one threads are actually being
woken up.
Yuri
On 02/27/2011 12:54, Yuri wrote:
On FreeBSD-8.1 this page says:
The pthread_cond_signal() function unblocks one thread waiting for the
condition variable cond
() || isTargetSolaris() || Is64Bit)
stackAlignment = 16;
But FreeBSD is excluded there. Is this a bug in LLVM which magically
doesn't cause crashes or this is correct and FreeBSD doesn't have 16 bit
alignment?
Yuri
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of the stack, software
convention and the operating system requires that the stack be aligned
on a word boundary.
But I know for the fact that Solaris-i386 uses 16 byte alignment. At
least that's what gcc-4.5.2 thinks when on Solaris.
Still not sure about FreeBSD-i386.
Yuri
On 02/21/2011 15:38, Joerg Sonnenberger wrote:
That's a major difference. The Linux people decided a while ago that
stack alignment should be 16 Byte. GCC effectively forces that down
everyone's throat because until at least GCC 4.2 or 4.3, it can't
correctly realign the stack and just fails
to
change this.
Yuri
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Resulting trace again shows only the main process, not it's descendants,
despite -d flag.
Same in the case of calling with pid: ktrace -d -p pid.
Yuri
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follow 'cloned' processes?
Is there any workaround or other way I can debug skype? strace doesn't
work on amd64.
I am primarily interested why it can't read /dev/video0 device, created
by webcamd.
Yuri
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