[squeak-dev] Re: New Cog VMs available
Eliot Miranda
eliot.miranda at gmail.com
Fri Aug 2 22:07:17 UTC 2013
On Fri, Aug 2, 2013 at 9:34 AM, Paul DeBruicker <pdebruic at gmail.com> wrote:
> I updated the 4.4 all-in-one and put it here:
>
> https://dl.dropboxusercontent.com/u/4460862/Squeak-4.4-All-In-One.zip
>
>
> On linux I'm not using the ht vm.
>
>
>
> If you attempt to use the HT vm without making the kernel modifications does
> it behave like the non-HT vm or just crash?
It exits with a cryptic error message:
$ coglinuxht/squeak myimage.image
pthread_setschedparam failed; consider using ITIMER_HEARTBEAT:
Operation not permitted
>
>
> Thanks
>
> Paul
>
>
>
>
> ...at http://www.mirandabanda.org/files/Cog/VM/VM.r2761/.
>
> CogVM binaries as per VMMaker.oscog-eem.317/r2761
>
> Fix bug in transferTo:(from:) when doing a code compaction when
> ensuring there is a machine code method when switching to a
> process whose context has a machine code pc.
>
> Limit the ammount of space the Cogit will stack allocate when compiling.
> This limits the maximum number of bytecodes in a method that the
> Cogit will compile. Currently set at 1.5Mb of stack space from empirical
> tests of alloca on Mac OS X 10.6, linux 2.6 & Windows XP.
>
> Fix become for cog methods that are not paired with their
> bytecoded methods (e.g. Newspeak accessors).
>
> Linux:
>
> There are two variants of the Linux VMs; those ending in "ht" have a
> heartbeat thread, while those that don't, use an interval timer for the
> heartbeat (the Windows and Mac VMs have a threaded heartbeat). The
> threaded heartbeat is better (for example, signals from the interval timer
> interfere with system calls, etc), but to use it one must have a kernel
> later than 2.6.12 and configure linux to allow the VM to use multiple
> thread priorities. To do so, create a file called VM.conf where VM is
> the name of the vm executable ("squeak" for the Squeak vm, "nsvm" for
> the Newspeak vm) in /etc/security/limits.d/ with contents:
> * hard rtprio 2
> * soft rtprio 2
>
> e.g.
> sudo cat >/etc/security/limits.d/squeak.conf <<END
> * hard rtprio 2
> * soft rtprio 2
> sudo cp /etc/security/limits.d/squeak.conf /etc/security/limits.d/nsvm.conf
> END
> Then log out and log back in for the limits to take effect.
> --
> best,
> Eliot
> </quote>
>
>
>
> --
> View this message in context: http://forum.world.st/New-Cog-VMs-available-tp4701896p4701959.html
> Sent from the Squeak - Dev mailing list archive at Nabble.com.
>
--
best,
Eliot
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