<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, May 22, 2014 at 11:44 AM, Chris Muller <span dir="ltr"><<a href="mailto:asqueaker@gmail.com" target="_blank">asqueaker@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="">On Thu, May 22, 2014 at 1:00 PM, David T. Lewis <<a href="mailto:lewis@mail.msen.com">lewis@mail.msen.com</a>> wrote:<br>
> Usually on a unix system, a "No such file or directory" error means<br>
> exactly what it says. A file named "/dev/dsp" is a device file in the /dev<br>
> pseudo-file system, which presumably is not present. Various flavors of<br>
> Linux or Unix might have different sound systems active, and might have<br>
> different naming conventions for device files.<br>
><br>
> I can't think of any reason why this should have an interaction with<br>
> object memory allocation. If it seems to be VM related, try running with<br>
> an interpreter VM or a different version of Cog and see if the symptoms<br>
> change.<br>
<br>
</div>It's because there's a System beep somewhere in there and I was just<br>
interjecting the question-- why the heck do we have System beep(s)<br>
embedded in the system?<br>
<br>
But let's please not focus on that right now. I really want to ask<br>
the more important question whether there's a problem with Cog.<br></blockquote><div><br></div><div>Looks like sound support is broken in Cog. I had hacked in ALSA support for linux at Qwaq/Teleplace and it appeared to be working properly there. But perhaps something is broken. Certainly ALSA support looked pretty poor, and recent;y Tim has found that at least on RPi one needs to compile the VM with the threaded heartbeat, /not/ the signalling itimer heartbeat for ALSA not to crash. So Chris, are you using the threaded or the itimer heartbeat? You can tell using the -version switch, at least on current VMs. Somewhere in the version output it'll say ITHB if its a VM with the itimer heartbeat.</div>
<div><br></div><div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">None of the symptoms happen with the Interpreter VM (2357).<br>
<br>
You can easily reproduce it yourself with Cog. Just start the base<br>
Squeak4.5 image with the -mmap 2000m argument.<br>
<br>
Then, in a workspace:<br>
<br>
self halt.<br>
<br>
Do It, then press Proceed on the debugger that appears.<br>
<br>
Does the problem occur for you too? It's related to amount reclaimed<br>
by the garbage-collector, but clearly we're not out of memory....<br>
</blockquote></div><br><br clear="all"><div><br></div>-- <br>best,<div>Eliot</div>
</div></div>