minix3 Google Group

Re: [minix3] system task [was: Minix IPC traffic measurement]

leith...@gmail.com (Leith) — Tue, 05 Jan 2010 22:50:13 UT

That is interesting...who is working on that? Is there anything
documented on that yet?

Re: [minix3] Expected merge of GCC porting efforts

thr...@gmail.com (Tomas Hruby) — Tue, 05 Jan 2010 22:41:51 UT

I do all my development on this branch and I try to keep the branch
sufficiently up to date. It's only out dated now because of some
strange problems with commiting using git-svn :( Besides the
buildbranch is equal to the coresponding trunk revision. Only
Makefiles and .S in lib/ need to be changed when commiting to trunk.

system task [was: Minix IPC traffic measurement]

thr...@gmail.com (Tomas Hruby) — Tue, 05 Jan 2010 22:08:55 UT

There is no need for a system task. It only adds overhead and
complexity. Therefore the plan is to handle system calls straight away
in the kernel.
T.

Re: [minix3] Minix IPC traffic measurement

thr...@gmail.com (Tomas Hruby) — Tue, 05 Jan 2010 22:05:57 UT

NAPI is a mix of interrupts and polling. After a driver receives an
interrpt it starts polling the NIC as long as it can get any new
packets. The interrupts from the device are disabled in the meantime.
If there are no new packets available, it falls back to interrupt
driven mode. No need for any timers. Actually, any timer would have

Re: [minix3] Re: Unable to use Call Profiling in minix315

antoine.lec...@gmail.com (Antoine Leca) — Tue, 05 Jan 2010 17:32:31 UT

In src/drivers/memory/ramdisk/pro to, increase the value of the first
number of the second line (the number of blocks).
Also man mkfs
Antoine

Re: Unable to use Call Profiling in minix315

jaswindermi...@gmail.com (Jaswinder Singh Rajput) — Tue, 05 Jan 2010 14:55:18 UT

1. setting 1 to CPROFILE in /usr/src/include/minix/config
2. export CPROFILE="-Rcem-p"
3. make install
I get :
mkfs image proto.gen || { rm -f image; false; }
sizeup ioctl: Not a typewriter
used fstat instead
mkfs: File system not big enough for all the files
Line 393 being processed when error detected.

Re: [minix3] Re: lua 5.1.4

the.wulf.g...@googlemail.com (Moritz Wilhelmy) — Tue, 05 Jan 2010 13:29:20 UT

Hey
can't be so hard to implement, feel free to do it... (and commit! :)
for -B and -S, just make -S an alias so everybody is happy and shuts up
Moritz
2009/12/26 AntoineLeca <antoine.lec...@gmail.com>:

Re: [minix3] Minix IPC traffic measurement

antoine.lec...@gmail.com (Antoine Leca) — Tue, 05 Jan 2010 10:35:57 UT

Sorry I was not clear. Of course polling is definitively a way to
achieve high performances, I took it as an evidence. My point was, how
can you _implement_ polling at 100 Mb/s when the receiver's capacity is
0.5 Mb (64K), and the obvious poll (system alarms) has 60Hz frequency?
Thinking more to it, I find a way. The RTL8139 have a internal timer

Re: Porting blackbox WM...missing standard X11 libs?

greg.ki...@verizon.net (Greg King) — Tue, 05 Jan 2010 10:15:59 UT

Blackbox is written in C++. So, you are using the G++ compiler.
Therefore, you explicitly must tell the configure script to use the "/
usr/X11R6-gcc/" directories.

Re: minix3.1.5 failing to load in vbox3.1.2

speer...@gmail.com (Bianco Zandbergen) — Mon, 04 Jan 2010 20:47:17 UT

This question has been answered by David on IRC but for the sake of
others:
[link]
6.1. MINIX 3.1.5 install issue (w/o hardware acceleration)
1. You can enable hardware acceleration:
* Verify that your processor has the virtualization

Re: [minix3] Minix IPC traffic measurement

leith...@gmail.com (Leith) — Mon, 04 Jan 2010 19:12:31 UT

Not to take this thread in a different direction, but that comment
interested me. What is the plan to remove the system task?

Re: [minix3] Minix IPC traffic measurement

thr...@gmail.com (Tomas Hruby) — Mon, 04 Jan 2010 18:59:15 UT

I don't know the difference between minix-vmd and 3, however, every
syscall is pretty expensive operation as system task has to be
scheduled first and the message has to be copied to system task space.
This overhead will be removed soonish by removing the system task.
T.

Re: [minix3] Minix IPC traffic measurement

thr...@gmail.com (Tomas Hruby) — Mon, 04 Jan 2010 18:51:11 UT

Indeed polling is an option on the RX side and as proven by the NAPI
model in Linux it is _essential_ to reach more then a few 100s of
Mbit/s especially as Minix has inherently more overheads then Linux.
Imho the same needs to be done on the TX side so that the driver can
poll inet. I think a major rework is required to place shared ring

minix3.1.5 failing to load in vbox3.1.2

nightcoo...@gmail.com (Night) — Mon, 04 Jan 2010 17:03:10 UT

Basically, instead of loading the kernel i get sent back to boot
monitor (fd0). Here is a screenshot of the problem: [link]
-night

Re: [minix3] Minix IPC traffic measurement

antoine.lec...@gmail.com (Antoine Leca) — Mon, 04 Jan 2010 15:14:50 UT

I finally realized that Philip does not seem to be subscribed to the
list, or at the very least his answers are not going into the list.
Sorry Philip to have you forgotten from my earlier posts; I wonder if
cross-posting to comp.os.minix would not be a good idea?
Perhaps^W Probably I misunderstood something (and I must confess I did