2006/7/1, Divacky Roman [EMAIL PROTECTED]:
afaik tendra doesnt support gnu C extensions and our srcs are full of it
so the only possible compilers ATM are gcc and icc
That's not completely true.
A lot of GCC stubs are masked through macros, so, with a little work
on it, you can successful
2006/7/2, Steve Kargl [EMAIL PROTECTED]:
It depends. If nwcc has no knowledge of floating point
registers, then the optimized npx bzero and copyin/copyout
operations aren't available. Nothing like a slow kernel.
Thanks for the trust...
http://www.freebsd.org/projects/ideas/#p-memcpy
2006/7/4, Aditya Godbole [EMAIL PROTECTED]:
Hi,
I was going through the machine dependant code and found that
assembler symbols are created using a script that parses symbol names
taken from an object file. Why is it done this way? Are there any
advantages of doing this?
assym.s just keeps
2006/7/11, [EMAIL PROTECTED] [EMAIL PROTECTED]:
Why do you all consider importing C++ code to FreeBSD kernel to be so
complicated at the beginning?
Matthias Andree wrote:
(please don't Cc me on list replies; chopping down the Cc list)
On Tue, 11 Jul 2006, [EMAIL PROTECTED] wrote:
Just as
2006/7/12, Joerg Sonnenberger [EMAIL PROTECTED]:
On Tue, Jul 11, 2006 at 11:37:52PM +0200, Attilio Rao wrote:
Even if I have no proof-of-concepts (so maybe somebody can show that
this is not fair), if we have setjmp/longjmp in the kernel we can have
a correct exception handling mechanism
2006/7/23, Divacky Roman [EMAIL PROTECTED]:
hi,
I need to get content of %esi register as it was during a syscall. Should I get
this info from td-td_pcb-pcb_esi or td-td_frame-tf_esi?
Is it so that trapframe is content of registers when entering a kernel and
pcb is when leaving a kernel ?
2006/7/30, Divacky Roman [EMAIL PROTECTED]:
On Sun, Jul 30, 2006 at 12:57:32PM +0200, Divacky Roman wrote:
hi,
while working on SoC linuxolator project I am in a need of this:
I need to do some operation on memory like mem1 = mem1 + mem2 etc.
where the mem1/mem2 access can trigger fault.
2006/8/14, Stanislav Sedov [EMAIL PROTECTED]:
On Mon, 14 Aug 2006 09:32:57 -0400
John Baldwin [EMAIL PROTECTED] mentioned:
You can make use of pcb_onfault to recover from a page fault, but that's
about it. Kernel code is expected to not generate exceptions. :)
Thanks a lot! I'll try it.
2006/11/10, Max Laier [EMAIL PROTECTED]:
On Friday 10 November 2006 10:37, Massimo Lusetti wrote:
On Thu, 2006-11-09 at 22:39 +0100, Gábor Kövesdán wrote:
Unfortunately, it seems that this is still that unfinished driver from
Damien, that circulates on the net everywhere, but it only works
2006/11/10, Attilio Rao [EMAIL PROTECTED]:
2006/11/10, Max Laier [EMAIL PROTECTED]:
On Friday 10 November 2006 10:37, Massimo Lusetti wrote:
On Thu, 2006-11-09 at 22:39 +0100, Gábor Kövesdán wrote:
Unfortunately, it seems that this is still that unfinished driver from
Damien
2006/11/10, Attilio Rao [EMAIL PROTECTED]:
2006/11/10, Attilio Rao [EMAIL PROTECTED]:
2006/11/10, Max Laier [EMAIL PROTECTED]:
On Friday 10 November 2006 10:37, Massimo Lusetti wrote:
On Thu, 2006-11-09 at 22:39 +0100, Gábor Kövesdán wrote:
Unfortunately, it seems that this is still
First of all, WPI_PCI_BAR0 might not be defined in this way, but it
should really use PCIR_BAR() macro.
Then, probabilly, gabor's device I/O space is relative to another BAR,
so simply try all 6 using PCIR_BAR(n) where n range is 0-6 until it
does allocate.
Sorry, n ranges 0-5... (as I said
2006/12/20, Duane Whitty [EMAIL PROTECTED]:
Hello again,
It seems to me that understanding locking holds the key to
understanding fbsd internals.
Could someone review my understanding of fbsd locking fundamentals.
(No assertions here, just questions)
lock_mgr
2006/12/21, Suleiman Souhlal [EMAIL PROTECTED]:
Attilio Rao wrote:
2006/12/20, Duane Whitty [EMAIL PROTECTED]:
Hello again,
It seems to me that understanding locking holds the key to
understanding fbsd internals.
Could someone review my understanding of fbsd locking fundamentals
2006/12/22, Robert Watson [EMAIL PROTECTED]:
On Thu, 21 Dec 2006, Attilio Rao wrote:
I disagree. There are many uses of atomic operations in the kernel that are
not for locks or refcounts. It's a bad idea to use locks if you can achieve
the same thing locklessly, with atomic operations.
I
2006/12/24, Duane Whitty [EMAIL PROTECTED]:
On Sat, Dec 23, 2006 at 02:24:10PM +0100, Alexander Leidinger wrote:
Quoting Attilio Rao [EMAIL PROTECTED] (Fri, 22 Dec 2006 23:25:53 +0100):
2006/12/22, Robert Watson [EMAIL PROTECTED]:
On Thu, 21 Dec 2006, Attilio Rao wrote:
[explanation
2007/3/29, Yar Tikhiy [EMAIL PROTECTED]:
On Wed, Mar 28, 2007 at 10:40:58AM +0100, Robert Watson wrote:
Spin locks are, FYI, slower than default mutexes. The reason is that they
have to do more work: they not only perform an atomic operation/memory
barrier to set the cross-CPU lock state,
2007/3/28, Robert Watson [EMAIL PROTECTED]:
Pretty much. We disable interrupts for the following reason: as spin mutexes
may be acquired in fast interrupt handlers, they may be running on the stack
of an existing thread, which may also hold locks. As such, we can't allow the
fast handler to
2007/4/26, Hans Petter Selasky [EMAIL PROTECTED]:
Hi,
In the new USB stack I have defined the following:
u_int32_t
mtx_drop_recurse(struct mtx *mtx)
{
u_int32_t recurse_level = mtx-mtx_recurse;
u_int32_t recurse_curr = recurse_level;
mtx_assert(mtx, MA_OWNED);
2007/4/26, Julian Elischer [EMAIL PROTECTED]:
The reason that mutexes ever recurse in the first place is usually because one
piece of code calls itself (or a related piece of code) in a blind manner.. in
other
words, it doesn't know it is doing so. The whole concept of recursing mutexes
is a
Hans Petter Selasky wrote:
On Thursday 26 April 2007 23:50, Attilio Rao wrote:
2007/4/26, Julian Elischer [EMAIL PROTECTED]:
The reason that mutexes ever recurse in the first place is usually
because one piece of code calls itself (or a related piece of code) in a
blind manner.. in other words
Matthew Dillon wrote:
The real culprit here is passing held mutexes to unrelated procedures
in the first place because those procedures might have to block, in
order so those procedures can release and reacquire the mutex.
That's just bad coding in my view. The unrelated
Julian Elischer wrote:
Hans Petter Selasky wrote:
First of all: Where is FreeBSD's locking strategy document?
It is just started.. man 9 locking. it needs a lot of work still.
I'm working with rwatson@ about a document that can nicely fit in
locking(9), but we are a little bit stuck in
Sergey Babkin wrote:
From: Julian Elischer [EMAIL PROTECTED]
Basically you shouldn't have a recursed mutex FULL STOP. We have a couple
of instances in the kernel where we allow a mutex to recurse, but they had to be
hard fought, and the general rule is Don't. If you are recursing on
a mutex
2007/10/3, Alfred Perlstein [EMAIL PROTECTED]:
* Daniel Eischen [EMAIL PROTECTED] [071002 19:46] wrote:
On Tue, 2 Oct 2007, Alfred Perlstein wrote:
Hi guys, we need critical sections for userland here.
This is basically to avoid a process being switched out while holding
a user level
2007/10/19, John Baldwin [EMAIL PROTECTED]:
On Friday 19 October 2007 12:56:54 am Ed Schouten wrote:
* John Baldwin [EMAIL PROTECTED] wrote:
The best option right now is to read the code. There are some comments in
both the headers and implementation.
Would it be useful to write
2007/11/24, Aryeh Friedman [EMAIL PROTECTED]:
On 11/24/07, Attilio Rao [EMAIL PROTECTED] wrote:
2007/11/24, Aryeh Friedman [EMAIL PROTECTED]:
Where do I find the main() [and/or other entery point] for the
kernel I tend to understand stuff better if I follow the flow of
exec from
2007/11/24, Aryeh Friedman [EMAIL PROTECTED]:
Where do I find the main() [and/or other entery point] for the
kernel I tend to understand stuff better if I follow the flow of
exec from the start
It is highly MD.
For IA32 it is in i386/i386/locore.s::btext
Attilio
--
Peace can only be
Hi,
As suggested in the list for volounteers, I'm currently working on
optimizing kernel copying functions.
As first step, I ported DragonFlyBSD's FPU handling design, which includes:
- modifies to MD part of struct thread
- modifies to npx device driver
- a lot of modifies about kernel copying
2006/2/24, Attilio Rao [EMAIL PROTECTED]:
Hi,
As suggested in the list for volounteers, I'm currently working on
optimizing kernel copying functions.
As first step, I ported DragonFlyBSD's FPU handling design, which
includes:
[snip]
Attachment seems to be removed. You can get the patch here
Hi,
I did not received too much feedbacks about Part I stability, but I went on,
so Part II is available for tests.
It presents an mmx copy which doesn't give much performance increases but
what I need now is testing for correctness. In particular I would see
feedbacks about races inside
2006/3/6, Divacky Roman [EMAIL PROTECTED]:
On Mon, Mar 06, 2006 at 11:20:10AM +0100, Attilio Rao wrote:
Hi,
I did not received too much feedbacks about Part I stability, but I went
on,
so Part II is available for tests.
It presents an mmx copy which doesn't give much performance
to
implement it as an array in my effort. As Attilio Rao mentioned, this
allows only fixed
amount of concurrent readers at the time (which is not quite right, but
can be implemented
as a per-lock sysctl tuneable). I chose an array to prevent introducing
one more mutex to
the SX lock on the short
The only functions can be called at userspace are syscalls through
software interrupt.
Attilio
2006/5/6, Gergely CZUCZY [EMAIL PROTECTED]:
hello,
There's an issue on jails i've decided to look into
(jails keep on stucking into the system). Yet, i examining
the 6-STABLE tree, and there is a
developers handbook (read assembly section) explain exactly how the
syscall handling happens on i386 architecture.
Attilio
2006/5/6, Gergely CZUCZY [EMAIL PROTECTED]:
On Sat, May 06, 2006 at 06:35:47PM +0200, Attilio Rao wrote:
The only functions can be called at userspace are syscalls
2006/5/24, R. Tyler Ballance [EMAIL PROTECTED]:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
I've started the uphill battle to port FreeBSD's kernel to run
paravirtualized (--note the smart sounding vocabulary) on top of
the L4/Iguana OS (Iguana is a very barebones OS developed by NICTA:
Hi,
this is the last release which is rather finished and complete for the project.
I tested for consistency for a long time and the FPU handling
mechanism seems very robust so as copyin/copyout do.
What I'm looking for, at this point, are testers for peroformances.
What is proposed in the
Sorry, but I unforgot one thing so, please, redownload the patch now.
Attilio
2006/5/31, Attilio Rao [EMAIL PROTECTED]:
Hi,
this is the last release which is rather finished and complete for the project.
I tested for consistency for a long time and the FPU handling
mechanism seems very robust
2006/5/31, Suleiman Souhlal [EMAIL PROTECTED]:
Hello Attilio,
Hello Suleiman,
Nice work. Any chance you could also port it to amd64? :-)
Not in the near future, I think. :P
Does that mean it won't work with SMP and PREEMPTION?
Yes it will work (even if I think it needs more testing)
2006/6/1, Bruce Evans [EMAIL PROTECTED]:
Does that mean it won't work with SMP and PREEMPTION?
Yes it will work (even if I think it needs more testing) but maybe
would give lesser performances on SMP|PREEMPTION due to too much
traffic on memory/cache. For this I was planing to use
2006/6/1, Alexander Leidinger [EMAIL PROTECTED]:
AFAIR the DFly FPU rework allows to use FPU/XMM instructions in their
kernel without the need to do some manual state preserving (it's done
automatically on demand). So one could use XMM instructions in RAID 5
or crypto parts of the code to test
2006/6/6, Matthew Dillon [EMAIL PROTECTED]:
:AFAIR the DFly FPU rework allows to use FPU/XMM instructions in their
:kernel without the need to do some manual state preserving (it's done
:...
:
:Bye,
:Alexander.
That actually isn't quite how it works. If the userland had active
FP state
2006/6/15, [EMAIL PROTECTED] [EMAIL PROTECTED]:
Hi guys:
I failed to get the pci bus resource after the driver is loaded (sc-r_mem
is NULL after bus_alloc_resource_any is called). Is it because bus resources
have been consumed by other drivers? Or other something happened? Please
help me on
2006/6/15, Marcin Cylke [EMAIL PROTECTED]:
On 6/15/06, Hans Petter Selasky [EMAIL PROTECTED] wrote:
What functions do you need? Have you looked at uhid.c under /sys/dev/usb ?
I would like to use the whole infrastructure:
struct hid_item
hid_usage_page()
hid_usage_in_page()
hid_init()
2008/2/28, Yuri Pankov [EMAIL PROTECTED]:
Hi,
I'm trying to understand the cause of following panic.
panic: Trying sleep, but thread marked as sleeping prohibited
cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
panic() at panic+0x17d
2008/4/21, Murty, Ravi [EMAIL PROTECTED]:
Hello,
When a thread cannot get a mutex (default mutex) and needs to be
blocked, is it really put to sleep? From looking at the code it appears
that it is inhibited (TD_SET_LOCK) but isn't really put to sleep.
From a scheduler perspective,
2008/4/21, Murty, Ravi [EMAIL PROTECTED]:
Hello,
When a thread cannot get a mutex (default mutex) and needs to be
blocked, is it really put to sleep? From looking at the code it appears
that it is inhibited (TD_SET_LOCK) but isn't really put to sleep.
1. Why isn't it put to
2008/8/16, Ryan French [EMAIL PROTECTED]:
Hi All,
I am currently trying to build a custom kernel for my Google Summer of Code,
and am running into a bit of a problem. I have all of my code compiling, but
when I get to the linking stage as soon as it comes to the new files I have
installed it
2008/8/16, Ryan French [EMAIL PROTECTED]:
On Sat, 16 Aug 2008 10:38:24 pm you wrote:
2008/8/16, Ryan French [EMAIL PROTECTED]:
Hi All,
I am currently trying to build a custom kernel for my Google Summer of
Code, and am running into a bit of a problem. I have all of my code
2008/10/16, Chris Coleman [EMAIL PROTECTED]:
I'm doing a large transfer from an SMB mounted drive, about 2TB of
files. After about 250G, it hanging. Of course any process that
tries to access that drive hangs as well.
Is there anyway to get those processes killed off and remount the
2009/3/24 Vladimir Ermakov samflan...@gmail.com:
Hello, All
Describe my problem:
have volume RAID-10 (SAS-HDD x 6) on Adaptec RAID 5805
2 HHD of 6 have errors in smart data (damaged)
i am try read file /var/db/mysql/ibdata1 from this volume
system does not respond ( lost access to ssh )
2009/5/1 xorquew...@googlemail.com:
Filed under:
http://www.freebsd.org/cgi/query-pr.cgi?pr=134142
Would be incredibly grateful if somebody in the know could take
a look at this.
But, what's the panic message?
Thanks,
Attilio
--
Peace can only be achieved by understanding - A. Einstein
2008/10/2 Yuri y...@rawbw.com:
Xin LI wrote:
Simon Barner wrote:
Mike Silbersack wrote:
On Mon, 17 Mar 2008, Heiko Wundram wrote:
Here's a tarball of what's in perforce right now. I tried it a little
bit, and it seemed to work for me. Make sure to install the kernel module!
2009/8/1 Linda Messerschmidt linda.messerschm...@gmail.com:
(Reposted from freebsd-questions due to no replies.)
With the last few releases, I've noticed a distinct trend toward
disappearing vnodes on one of the machines I look after.
This machine isn't doing a whole lot. It runs a couple
2009/8/1 Linda Messerschmidt linda.messerschm...@gmail.com:
(Reposted from freebsd-questions due to no replies.)
With the last few releases, I've noticed a distinct trend toward
disappearing vnodes on one of the machines I look after.
This machine isn't doing a whole lot. It runs a couple
2009/9/25 Fabio Checconi fa...@freebsd.org:
Hi all,
looking at sys/sx.h I have some troubles understanding this comment:
* A note about memory barriers. Exclusive locks need to use the same
* memory barriers as mutexes: _acq when acquiring an exclusive lock
* and _rel when releasing an
2009/9/29 John Baldwin j...@freebsd.org:
On Tuesday 29 September 2009 11:39:37 am Attilio Rao wrote:
2009/9/25 Fabio Checconi fa...@freebsd.org:
Hi all,
looking at sys/sx.h I have some troubles understanding this comment:
* A note about memory barriers. Exclusive locks need to use
2009/9/29 John Baldwin j...@freebsd.org:
On Tuesday 29 September 2009 3:15:40 pm Attilio Rao wrote:
2009/9/29 John Baldwin j...@freebsd.org:
On Tuesday 29 September 2009 11:39:37 am Attilio Rao wrote:
2009/9/25 Fabio Checconi fa...@freebsd.org:
Hi all,
looking at sys/sx.h I have some
2009/9/29 Max Laier m...@love2party.net:
On Tuesday 29 September 2009 17:39:37 Attilio Rao wrote:
2009/9/25 Fabio Checconi fa...@freebsd.org:
Hi all,
looking at sys/sx.h I have some troubles understanding this comment:
* A note about memory barriers. Exclusive locks need to use
2009/9/29 Marius Nünnerich mar...@nuenneri.ch:
On Tue, Sep 29, 2009 at 21:15, Attilio Rao atti...@freebsd.org wrote:
2009/9/29 John Baldwin j...@freebsd.org:
On Tuesday 29 September 2009 11:39:37 am Attilio Rao wrote:
2009/9/25 Fabio Checconi fa...@freebsd.org:
Hi all,
looking at sys/sx.h
2009/9/29 John Baldwin j...@freebsd.org:
On Tuesday 29 September 2009 4:42:13 pm Attilio Rao wrote:
2009/9/29 Max Laier m...@love2party.net:
On Tuesday 29 September 2009 17:39:37 Attilio Rao wrote:
2009/9/25 Fabio Checconi fa...@freebsd.org:
Hi all,
looking at sys/sx.h I have some
Can you send a full dmesg?
2009/10/1 ivan anyukov ivan.anyu...@googlemail.com:
Hi guys,
I'm running 7.2-STABLE on a Thinkpad T60.
When connecting a second monitor to my docking station sometimes my FreeBSD
freezes.
kgdb on the vmcore-file says non-maskable interrupt trap
Some details:
2009/10/1 ivan anyukov ivan.anyu...@googlemail.com:
dmesg goes here:
Yes, I think it is an hw failure.
Attilio
--
Peace can only be achieved by understanding - A. Einstein
___
freebsd-hackers@freebsd.org mailing list
2009/9/29 John Baldwin j...@freebsd.org:
On Tuesday 29 September 2009 4:42:13 pm Attilio Rao wrote:
2009/9/29 Max Laier m...@love2party.net:
On Tuesday 29 September 2009 17:39:37 Attilio Rao wrote:
2009/9/25 Fabio Checconi fa...@freebsd.org:
Hi all,
looking at sys/sx.h I have some
2009/11/6 Dorr H. Clark dcl...@engr.scu.edu:
We believe we have identified a significant resource leak
present in 6.x, 7.x, and 8.x. We believe this is a regression
versus FreeBSD 4.x which appears to do the Right Thing (tm).
We have a test program (see below) which will run the system
2010/3/26 pluknet pluk...@gmail.com:
On 26 March 2010 23:10, Tom Judge t...@tomjudge.com wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
This is the function, I am guessing that I need to unlock the proc
before calling vmspace_free ?
As far as I know you cannot lock a process around
2010/4/24 Matthew Fleming matthew.flem...@isilon.com:
I'm looking at kern_idle.c in stable/7 and I don't quite follow how idle
threads work. The kthread_create(9) call does not pass in a function
pointer, so what code does a processor run when there is no other
runnable thread?
In STABLE_7:
2010/6/5 Matthew Jacob m...@feral.com
All of these tests have been apples vs. oranges for years.
The following seems to be true, though:
a) FreeBSD sequential write performance in UFS has always been less than
optimal.
b) Linux sequential write performance in just about any filesystem
2010/6/5 Kostik Belousov kostik...@gmail.com
On Sat, Jun 05, 2010 at 07:41:23PM +0200, Attilio Rao wrote:
2010/6/5 Matthew Jacob m...@feral.com
All of these tests have been apples vs. oranges for years.
The following seems to be true, though:
a) FreeBSD sequential write
2010/7/15 Alan Cox alan.l@gmail.com:
On Thu, Jul 15, 2010 at 8:01 AM, Ivan Voras ivo...@freebsd.org wrote:
On 07/14/10 18:27, Jerry Toung wrote:
On Wed, Jul 14, 2010 at 12:04 AM, Gary Jennejohn
gljennj...@googlemail.comwrote:
Rather than commenting out the code try setting the
2010/8/5 John Baldwin j...@freebsd.org:
On Thursday, August 05, 2010 11:59:37 am m...@freebsd.org wrote:
On Wed, Aug 4, 2010 at 11:55 AM, John Baldwin j...@freebsd.org wrote:
On Wednesday, August 04, 2010 12:20:31 pm m...@freebsd.org wrote:
On Wed, Aug 4, 2010 at 2:26 PM, John Baldwin
2010/8/4 m...@freebsd.org:
On Fri, Jul 30, 2010 at 2:31 PM, John Baldwin j...@freebsd.org wrote:
On Friday, July 30, 2010 10:08:22 am John Baldwin wrote:
On Thursday, July 29, 2010 7:39:02 pm m...@freebsd.org wrote:
We've seen a few instances at work where witness_warn() in ast()
indicates
2010/8/23 Andriy Gapon a...@icyb.net.ua:
on 23/08/2010 15:10 John Baldwin said the following:
On Friday, August 20, 2010 1:13:53 pm Ryan Stone wrote:
Consider the following modules:
/* first.c */
static int *test;
int
test_function(void)
{
return *test;
}
static int
2010/9/18 Andriy Gapon a...@icyb.net.ua:
Here's a small patch that adds support for printing stack trace in form of
frame
addresses when KDB_TRACE is enabled, but there is no debugger backend
configured.
The patch is styled after cheap variant of stack_ktr.
What do you think
2010/9/18 Andriy Gapon a...@freebsd.org:
on 18/09/2010 22:00 Andriy Gapon said the following:
Oh, wow, and I totally overlooked stack_print().
Should have read stack(9) from the start.
New patch. Hope this is better.
I don't like that the printf is duplicated, but couldn't figure out a way
2010/9/18 Andriy Gapon a...@freebsd.org:
on 18/09/2010 23:35 Attilio Rao said the following:
It is still missing checking on opt_stack.h
Yes, thanks, fixed it in my tree.
Besides, I'd reconsider having KDB_TRACE explanation in ddb(4) manpage
(right now it is rightly there because it is DDB
2010/11/25 Andriy Gapon a...@freebsd.org:
on 25/11/2010 17:28 John Baldwin said the following:
Andriy Gapon wrote:
on 22/11/2010 16:24 John Baldwin said the following:
Well, the real solution is actually larger than described in the PR. What
you
really want to do is take the logical CPUs
2010/12/7 Andriy Gapon a...@freebsd.org:
$ glimpse atomic_set_ | fgrep -w 0
/usr/src/sys/dev/arcmsr/arcmsr.c:
atomic_set_int(acb-srboutstandingcount, 0);
/usr/src/sys/dev/arcmsr/arcmsr.c:
atomic_set_int(acb-srboutstandingcount, 0);
/usr/src/sys/dev/jme/if_jme.c:
2011/4/17 Rick Macklem rmack...@uoguelph.ca:
Hi,
I should know the answer to this, but... When reading a global kernel
variable, where its modifications are protected by a mutex, is it
necessary to get the mutex lock to just read its value?
For example:
A if ((mp-mnt_kern_flag
2011/8/18 Andriy Gapon a...@freebsd.org:
on 17/08/2011 23:21 Andriy Gapon said the following:
It seems like everything starts with some kind of a race between
terminating
processes in a jail and termination of the jail itself. This is where the
details are very thin so far. What we see is
2011/8/31 Sean Bruno sean...@yahoo-inc.com:
On Tue, 2011-08-30 at 17:11 -0700, Ivan Voras wrote:
On 29.8.2011. 20:15, John Baldwin wrote:
However, the SRAT code just ignores the table when it encounters an issue
like
this, it doesn't hang. Something else later in the boot must have
2011/9/1 Ivan Voras ivo...@freebsd.org:
On 1 September 2011 16:11, Attilio Rao atti...@freebsd.org wrote:
I mean, if we have 2 cpus in a machine, but MAXCPU is set to 256, there
is a bunch of lost memory and higher levels of lock contention?
I thought that attilio was taking a stab
Besides I'd also suggest to have the callout rearming as the very last
step of you callback in order to avoid buffering interleaving issues.
Attilio
2011/9/12 Kostik Belousov kostik...@gmail.com:
On Mon, Sep 12, 2011 at 11:48:42AM +0200, Marc L?rner wrote:
Hello,
what about changing order of
2011/10/13 Haozhong Zhang snowzh8...@gmail.com:
Hi,
I'm recently reading the code of sched_ule in freebsd 8.2.0 and have two
questions.
1. sched_switch() (in sched_ule.c) invokes cpu_switch() (at line 1852) and
thread_unblock_switch() (at line 1867). These two functions exchange
td-td_lock
2011/12/27 Giovanni Trematerra giovanni.tremate...@gmail.com:
On Mon, Dec 26, 2011 at 9:24 PM, Venkatesh Srinivas
vsrini...@dragonflybsd.org wrote:
Hi!
I've been playing with two things in DragonFly that might be of interest
here.
Thing #1 :=
First, per-mountpoint syncer threads.
2011/12/27 m...@freebsd.org:
On Tue, Dec 27, 2011 at 8:05 AM, Attilio Rao atti...@freebsd.org wrote:
2011/12/27 Giovanni Trematerra giovanni.tremate...@gmail.com:
On Mon, Dec 26, 2011 at 9:24 PM, Venkatesh Srinivas
vsrini...@dragonflybsd.org wrote:
Hi!
I've been playing with two things
2012/1/14 Kip Macy kip.m...@gmail.com:
Many of the ideas on that page are stale. I believe that the most
promising approach would be to figure out what area of the system
you're most interested in, e.g. networking, file systems, virtual
memory, scheduling etc., make an honest appraisal of your
2012/1/28 Ryan Stone ryst...@gmail.com:
Right now, whenever a thread is spawned, it inherits CPU affinity from
its parent thread. I put parent in scare quotes because as far as I
can tell, for a kernel thread the parent is essentially chosen
arbitrarily (it looks like it is the most recent
2012/1/28 Ryan Stone ryst...@gmail.com:
On Fri, Jan 27, 2012 at 10:41 PM, Attilio Rao atti...@freebsd.org wrote:
I think what you found out is very sensitive.
However, the patch is not correct as you cannot call
cpuset_setthread() with thread_lock held.
Whoops! I actually discovered
2012/1/28 Attilio Rao atti...@freebsd.org:
2012/1/28 Ryan Stone ryst...@gmail.com:
On Fri, Jan 27, 2012 at 10:41 PM, Attilio Rao atti...@freebsd.org wrote:
I think what you found out is very sensitive.
However, the patch is not correct as you cannot call
cpuset_setthread() with thread_lock
2012/2/5 Ivan Voras ivo...@freebsd.org:
On 5 February 2012 11:44, Garrett Cooper yaneg...@gmail.com wrote:
'make MAKE_JOBS_NUMBER=1' is the workground used right now..
David Xu suggested that it is a bug in Python - it doesn't set
process-shared attribute when it calls sem_init(), but
2012/2/24, Eugene Grosbein egrosb...@rdtc.ru:
28.01.2012 20:22, Attilio Rao пишет:
2012/1/28 Ryan Stone ryst...@gmail.com:
On Fri, Jan 27, 2012 at 10:41 PM, Attilio Rao atti...@freebsd.org
wrote:
I think what you found out is very sensitive.
However, the patch is not correct as you cannot
2012/2/24, Eugene Grosbein eu...@grosbein.pp.ru:
24.02.2012 18:45, Attilio Rao пишет:
I have the pathological test-case for it:
http://www.freebsd.org/cgi/query-pr.cgi?pr=165444
A fix has been committed as r230984, it should apply to STABLE_9/8
too, can you try it?
Attilio
I will try
2012/3/27, Efstratios Karatzas gpf.k...@gmail.com:
On Tue, Mar 27, 2012 at 11:06 PM, Gleb Kurtsou
gleb.kurt...@gmail.comwrote:
On (26/03/2012 21:13), Efstratios Karatzas wrote:
Greetings,
I am a FreeBSD GSoC 2010 student, looking to participate in this years
GSoC. The project that I
Il 05 aprile 2012 19:12, Arnaud Lacombe lacom...@gmail.com ha scritto:
Hi,
[Sorry for the delay, I got a bit sidetrack'ed...]
2012/2/17 Alexander Motin m...@freebsd.org:
On 17.02.2012 18:53, Arnaud Lacombe wrote:
On Fri, Feb 17, 2012 at 11:29 AM, Alexander Motinm...@freebsd.org wrote:
Il 06 aprile 2012 15:27, Alexander Motin m...@freebsd.org ha scritto:
On 04/06/12 17:13, Attilio Rao wrote:
Il 05 aprile 2012 19:12, Arnaud Lacombelacom...@gmail.com ha scritto:
Hi,
[Sorry for the delay, I got a bit sidetrack'ed...]
2012/2/17 Alexander Motinm...@freebsd.org
Il 13 aprile 2012 17:18, Mahesh Babu maheshbab...@yahoo.co.in ha scritto:
How to disable a particular core in FreeBSD 9?
How to enable it again?
You can disable specific core at boot time by using the tunable:
hint.lapic.X.disabled=1
where X is the APIC ID of the CPU you want to turn off.
Il 20 aprile 2012 19:18, Arnaud Lacombe lacom...@gmail.com ha scritto:
Hi,
On Fri, Apr 20, 2012 at 2:16 PM, Arnaud Lacombe lacom...@gmail.com wrote:
Hi,
I will be bringing up an old thread there, but it would seem the
situation did not evolve in the past 9 years. I have a machine running
2012/5/17, Andriy Gapon a...@freebsd.org:
on 25/01/2012 23:52 Andriy Gapon said the following:
on 24/01/2012 14:32 Gleb Smirnoff said the following:
Yes, now:
Rebooting...
lock order reversal:
1st 0x80937140 smp rendezvous (smp rendezvous) @
2012/5/29 Adrian Chadd adr...@freebsd.org:
Hi Alexander and others,
I've been tinkering with ath(4) IO scheduling and taskqueues. In order
to get proper in order TX IO occuring, I've placed ath_start() into
a taskqueue so now whenever ath_start() is called, it just schedules a
taskqueue
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