On Tue, Nov 27, 2012 at 2:23 PM, john skaller <skal...@users.sourceforge.net
> wrote:
>
> On 28/11/2012, at 9:09 AM, Dobes Vandermeer wrote:
> >
> > On my Windows 7 machine I ran that test as I composed my reply and
> started 160,000 threads. I would assume a modern version of linux is
> capable of the same.
>
> OSX, macbook pro:
>
Well, I said linux not Mac OSX. Those limits are arbitrary anyway, you can
change them. There may be a "hard" limit compiled in the kernel, though, I
don't know. OSX is not Linux, though.
Here's the stats for an unmodified install of Linux Mint. If one chooses
to tune things a bit, the numbers can go a lot higher I think. For a high
concurrency network server, tuning is usually needed just to increase the
number of sockets and file handles the kernel can handle anyway.
dobes@dobes-VirtualBox ~ $ uname -a
Linux dobes-VirtualBox 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51
UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
dobes@dobes-VirtualBox ~ $ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 15890
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 15890
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
Interesting that Windows appears to be the superior operating system in
this case.
> > The actual work being done by those threads would probably dominate
> their resource usage in most cases.
> >
> > Maybe not. Consider a game where EVERYTHING is a thread.
> > All the actors, sprites, everything. All the time, not just when visible.
> > [Simulation].
> >
> > Sure, but that's a hypothetical.
>
> Yes, its a design. Clearly hypothetical because game developers
> didn't have Felix before :)
>
Felix isn't the first system to support lightweight threads, though.
> > Is that today's design goal, though?
>
> Todays design goal is to get my dinghy floating so I can get off
> my boat. Aluminium is a bad material for a vessel that sits in
> the water all the time .. especially next to a steel boat!
>
Good luck!
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