<br><br><div class="gmail_quote">On Tue, Nov 30, 2010 at 5:14 PM, David T. Lewis <span dir="ltr"><<a href="mailto:lewis@mail.msen.com" target="_blank">lewis@mail.msen.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<br>
Hi,<br>
<br>
I'm away and cannot check this right now, but if you look in the<br>
SqS/VMMaker archive there there are a number of recent updates that<br>
may address this problem. See the Montecello update comments for<br>
VMMaker-dtl.188, VMMaker-dtl.199, and VMMaker-dtl.200 for summaries.<br>
These updates would not be in any of the released VMs at this point,<br>
but I have a hunch that they will take care of this problem.<br></blockquote><div><br>Hi Dave. Ok...after a couple of hours I could compile a new VM for MacOS with VMMaker 205 and integrating all my changes :)<br>So....this was something I have to do since several months already hehhehe<br>
<br>Now, as you guessed, something was related to that. Now, these are the results:<br><br>normal:<br><br>Smalltalk garbageCollect 481957728<br>Smalltalk primBytesLeft 5738200<br><br>with -memory 1500m<br><br>Smalltalk garbageCollect 482093452<br>
Smalltalk primBytesLeft 6444200 <br> <br><br>Now, at least it is not negative. But I wonder....shouldn't I have more bytes left when I send 1500m ? <br>how can I be sure that the VM is actually tacking into account this parameter?<br>
can I check some parameter in Smalltalk vmParameterAt:<br>?<br><br>thanks!<br><br>mariano<br><br></div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<br>
Dave<br>
<div><div></div><div><br>
<br>
On Tue, Nov 30, 2010 at 02:43:50PM +0100, Mariano Martinez Peck wrote:<br>
><br>
> Hi folks. I am using the standard SqueakVM 4.2.5beta1U.<br>
> If I run normaly the VM with a normal Pharo image and I print Smalltalk<br>
> garbageCollect -> I get something like 492130460<br>
><br>
> Now...if I run the vm with the parameter -memory 1500m and I then print<br>
> Smalltalk garbageCollect -> I get a NEGATIVE number like: -619402660<br>
><br>
> I guess there is a problem in somewhere like ObjectMemory >> bytesLeft:<br>
> but I don't know...<br>
><br>
> Anyway, the problem in my case is in SmalltalkImage:<br>
><br>
> okayToProceedEvenIfSpaceIsLow<br>
> "Return true if either there is enough memory to do so safely or if the<br>
> user gives permission after being given fair warning."<br>
><br>
> self garbageCollectMost > self lowSpaceThreshold ifTrue: [^ true].<br>
> "quick"<br>
> self garbageCollect > self lowSpaceThreshold ifTrue: [^ true]. "work<br>
> harder"<br>
><br>
> ^ self confirm:<br>
> 'WARNING: There is not enough space to start the low space watcher.<br>
> If you proceed, you will not be warned again, and the system may<br>
> run out of memory and crash. If you do proceed, you can start the<br>
> low space notifier when more space becomes available simply by<br>
> opening and then closing a debugger (e.g., by hitting Cmd-period.)<br>
> Do you want to proceed?'<br>
><br>
><br>
> Since both of the first answers false because, of course garbageCollectMost<br>
> and garbageCollect are negative....<br>
> then I have that poup all the time.<br>
><br>
> To fix this I have to posibilities:<br>
><br>
> 1) Just patch this particular method to:<br>
><br>
> self garbageCollectMost.<br>
> self primBytesLeft > self lowSpaceThreshold ifTrue: [^ true]. "quick"<br>
> self garbageCollect<br>
> self primBytesLeft > self lowSpaceThreshold ifTrue: [^ true]. "work harder"<br>
><br>
> Notice that primBytesLeft is answering correct. Wait..I don't know if<br>
> correct, but at least possitive: 5691396<br>
> I think this is possitive because the primitive is not receiving a<br>
> parameter, and thus, Interpreter >> primitiveBytesLeft<br>
> evaluates the first part of the method, which just does self sizeOfFree:<br>
> freeBlock , and not the second part where it does self bytesLeft: aBool.<br>
><br>
> 2) understand why it is negative and fix it from the VM side (I have no idea<br>
> how to do this).<br>
><br>
> Now, in addition, I wonder if there may be other places broken because of<br>
> this....I am having some crashed and I don't know why :(<br>
><br>
> Thanks in advance,<br>
><br>
> Mariano<br>
<br>
</div></div></blockquote></div><br>