On Fri, Feb 28, 2020 at 07:11:02AM -0600, Robby Findler wrote: > Oh, sorry-- I misunderstood. > > In v7.5, there will be, in some cases, a source location after you > dismiss that dialog. In the pre-release builds, that's been improved > somewhat and source location information is more reliably available.
Excellent. > That said, there are limitations and it isn't always available. Of course. If the entire process gets shut down because of memory overrun there isn't much left to report on. > > Thanks for using DrR! It's the easiest way to use Racket. -- hendrik > > Robby > > On Fri, Feb 28, 2020 at 6:31 AM Hendrik Boom <hend...@topoi.pooq.com> wrote: > > > > On Fri, Feb 28, 2020 at 06:02:31AM -0600, Robby Findler wrote: > > > I agree that would be great. In the meantime, the Run button does a better > > > job with error reporting in various ways, including this one so hopefully > > > you can try that? > > > > That's what I was using. There was a popup message that wasn't any more > > informative. > > It says: > > > > - The evaluation thread is no longer running, so > > no evaluation can take place until the next > > execution. > > > > The program ran out of memory. > > [V]Show thid dialog ext time > > [Increase memory limit to 256 megabytes] [OK] > > > > I'm mentioning this to indicate a way the drracket uer-interface can be > > improved, especially for beginners. > > > > I'm not asking Racket maintainers to step in and debug my code. > > > > (Further analysis (by deleting code until there was almost nothing left) > > indicates it crashed during processing the #lang line at the start. > > I have started private correspondence with the language author.) > > > > -- hendrik > > > > > > Robby > > > > > > On Fri, Feb 28, 2020 at 5:45 AM Hendrik Boom <hend...@topoi.pooq.com> > > > wrote: > > > > > > > > > > > When Racket detects the out-of-memory condition during "background > > > > processing", it would be useful i the out-of-memory message were to > > > > point > > > > out which particular piece of source text it was having trouble with. > > > > Just > > > > the line number where the expression started that the REPL was having > > > > trouble with would be a huge help. > > > > > > > > And by the way, if Dr. Racket were to be a she, she would be addressed > > > > in > > > > Quebec as Dre. Racket. > > > > > > > > On Friday, 5 February 2016 19:19:46 UTC-5, jon stenerson wrote: > > > > > > > >> lol. Don't be sorry. Speaking of anthropomorphization, I really love > > > >> Dr > > > >> Racket and hope I didn't hurt his feelings (Or is Dr Racket a she?). I > > > >> employ his services whenever I can. I don't mean to be a whiner; he > > > >> deserves better than that! > > > >> > > > >> Jon > > > >> > > > >> On 2/5/2016 3:44 PM, Robby Findler wrote: > > > >> > Sorry we can't do better. And it is really amazing how I actually > > > >> > think so anthropomorphically about these things. :) That really was a > > > >> > literal brain dump. > > > >> > > > > >> > Robby > > > >> > > > > >> > On Fri, Feb 5, 2016 at 3:53 PM, jon stenerson <jonste...@comcast.net> > > > >> wrote: > > > >> >> Thanks for the explanation. I appreciate it. > > > >> >> > > > >> >> > > > >> >> On 2/5/2016 1:55 PM, Robby Findler wrote: > > > >> >>> In general, DrRacket does not promise to avoid this situation. Let > > > >> >>> me > > > >> >>> explain a little bit. This program is effectively equivalent to > > > >> >>> this > > > >> >>> one: > > > >> >>> > > > >> >>> #lang racket/base > > > >> >>> (define (run l) > > > >> >>> (run (cons 'x l))) > > > >> >>> (run '()) > > > >> >>> > > > >> >>> (but running at compile time, which is why things happen > > > >> >>> automatically, but lets leave that aside for now). > > > >> >>> > > > >> >>> So when you run that program, DrRacket is asking the operating > > > >> >>> system > > > >> >>> for all of its memory. At some point, the operating system says > > > >> >>> "sorry, no, we're out of memory" and since the program running > > > >> >>> inside > > > >> >>> DrRacket doesn't really care that we're out of memory, the > > > >> >>> operating > > > >> >>> system responds with "die!". And so DrRacket dies. > > > >> >>> > > > >> >>> There are two ways we try to do better. First: we can set limits on > > > >> >>> the memory. But if the limit is set to be higher than the amount of > > > >> >>> memory available on the machine, then it is as if the memory limit > > > >> >>> isn't set. Also worth noting at this point: the way that DrRacket's > > > >> >>> counting of "how much memory" is only loosely related to the way > > > >> >>> that > > > >> >>> your machine's vendor or the OS counts. There are some constant > > > >> >>> factors of difference there that depend on things like how the > > > >> garbage > > > >> >>> collector is configured and how many other programs are running on > > > >> >>> your system and what they are doing (like the OS itself likes to > > > >> >>> have > > > >> >>> some of the memory and it (quite reasonably) doesn't want to share > > > >> >>> that memory). > > > >> >>> > > > >> >>> The second way is that the OS will sometimes say "you are about to > > > >> >>> cause me to exhaust all of the system's memory and if you do that, > > > >> >>> I > > > >> >>> will kill you" at which point the GC inside Racket responds with > > > >> >>> "okay, I'll just die first". The main advantage of this is that you > > > >> >>> get an error message saying "out of memory" from Racket instead of > > > >> >>> an > > > >> >>> error message saying "I killed your program" from the OS (which is > > > >> the > > > >> >>> message you're getting). It turns out to be remarkably difficult to > > > >> >>> get this error message to work in all situations. We're better than > > > >> we > > > >> >>> used to be at it, but at some level, the best we can do in that > > > >> >>> case > > > >> >>> is really just to change the text of the error message. When we're > > > >> out > > > >> >>> of memory like that, it's very very hard to recover if the limits > > > >> >>> are > > > >> >>> not set up ahead of time (i.e. back to the previous paragraph). > > > >> >>> > > > >> >>> I hope this clears up the issue somewhat. > > > >> >>> > > > >> >>> In the meantime, I suggest you lower the memory limit for your > > > >> machine. > > > >> >>> > > > >> >>> Robby > > > >> >>> > > > >> >>> > > > >> >>> > > > >> > > > > >>> On Fri, Feb 5, 2016 at 10:53 AM, jon stenerson > > > > >>> <jonste...@comcast.net> > > > >> > > > >> > > > > >>> wrote: > > > >> >>>> Actually you don't even have to run the program. With memory limit > > > >> set to > > > >> >>>> 1024, just open a file containing the expression and wait. After a > > > >> minute > > > >> >>>> or > > > >> >>>> two DrRacket puts up a MSVC runtime error dialog. > > > >> >>>> > > > >> >>>> > > > >> >>>> On 2/5/2016 9:39 AM, jon stenerson wrote: > > > >> >>>>> Setting the limit lower helped. Thanks. I did not see that > > > >> >>>>> message > > > >> about > > > >> >>>>> Background Expansion Terminated before. Now I do. > > > >> >>>>> > > > >> >>>>> Jon > > > >> >>>>> > > > >> >>>>> On 2/5/2016 6:55 AM, Robby Findler wrote: > > > >> >>>>>> It took a while for mine for the custodian limit to be reached > > > >> >>>>>> and > > > >> for > > > >> >>>>>> the expansion to run out of memory. It may be that the > > > >> >>>>>> threshhold > > > >> for > > > >> >>>>>> the memory use is too high on some systems. Maybe the right > > > >> >>>>>> thing > > > >> is > > > >> >>>>>> to set the default a bit lower? > > > >> >>>>>> > > > >> >>>>>> Jon: if you open the "Racket" menu you should see a "Limit > > > >> Memory..." > > > >> >>>>>> menu item. How does DrRacket do if you change the number in > > > >> >>>>>> there > > > >> to > > > >> >>>>>> 256 and then paste the program into the definitions window? Do > > > >> >>>>>> you > > > >> see > > > >> >>>>>> the red message at the bottom of the screen or does DrRacket > > > >> >>>>>> still > > > >> run > > > >> >>>>>> out of memory? > > > >> >>>>>> > > > >> >>>>>> Anthony: I don' thave a good solution for you, but I find that > > > >> >>>>>> the > > > >> >>>>>> menu key short cut (control-k for you?) for killing is more > > > >> >>>>>> likely > > > >> to > > > >> >>>>>> get thru, because it requires a lot less event handling than the > > > >> >>>>>> others. > > > >> >>>>>> > > > >> >>>>>> Robby > > > >> >>>>>> > > > >> >>>>>> > > > >> >>>>>> On Fri, Feb 5, 2016 at 7:41 AM, Pierpaolo Bernardi > > > >> > > > > >>>>>> <olop...@gmail.com> > > > >> >>>>>> wrote: > > > >> >>>>>>> On my system it behaves almost exactly as described by Jon > > > >> >>>>>>> (6.3, > > > >> >>>>>>> windows). > > > >> >>>>>>> > > > >> >>>>>>> The one difference is that DrRacket hasn't crashed yet, but the > > > >> Task > > > >> >>>>>>> manager reports one processor at 100% and memory use slowly > > > >> growing. > > > >> >>>>>>> Currently is at 7.5 GB. > > > >> >>>>>>> > > > >> >>>>>>> > > > >> >>>>>>> > > > >> >>>>>>> > > > >> >>>>>>> > > > >> >>>>>>> On Fri, Feb 5, 2016 at 2:29 PM, Anthony Carrico > > > >> >>>>>>> <acar...@memebeam.org> > > > >> >>>>>>> wrote: > > > >> >>>>>>>> On 02/05/2016 08:01 AM, Robby Findler wrote: > > > >> >>>>>>>>> When I run this, I see a message at the bottom of the > > > >> >>>>>>>>> DrRacket > > > >> >>>>>>>>> window > > > >> >>>>>>>>> (in red): > > > >> >>>>>>>>> > > > >> >>>>>>>>> Background expansion terminated abnormally (out of > > > >> >>>>>>>>> memory) > > > >> >>>>>>>>> > > > >> >>>>>>>>> do you see this message? > > > >> >>>>>>>> I tried too, and it stops fine with the same message as Robby. > > > >> No > > > >> >>>>>>>> phantom CPU usage apparent. > > > >> >>>>>>>> > > > >> >>>>>>>> However, I did have a run away DrRacket recently that didn't > > > >> respond > > > >> >>>>>>>> to > > > >> >>>>>>>> stop and took a few minutes to kill because my UI was > > > >> >>>>>>>> extremely > > > >> >>>>>>>> sluggish > > > >> >>>>>>>> (partially because X11 and/or the window manager sucks, and my > > > >> CPU > > > >> >>>>>>>> probably throttled, but still...). I don't have any good data > > > >> for you > > > >> >>>>>>>> about the circumstances of the issue though. > > > >> >>>>>>>> > > > >> >>>>>>>> -- > > > >> >>>>>>>> Anthony Carrico > > > >> >>>>>>>> > > > >> >>>>>>>> -- > > > >> >>>>>>>> You received this message because you are subscribed to the > > > >> Google > > > >> >>>>>>>> Groups "Racket Users" group. > > > >> >>>>>>>> To unsubscribe from this group and stop receiving emails from > > > >> it, > > > >> >>>>>>>> send > > > >> >>>>>>>> an email to racket...@googlegroups.com. > > > >> >>>>>>>> For more options, visit https://groups.google.com/d/optout. > > > >> >>>>>>> -- > > > >> >>>>>>> You received this message because you are subscribed to the > > > >> Google > > > >> >>>>>>> Groups "Racket Users" group. > > > >> >>>>>>> To unsubscribe from this group and stop receiving emails from > > > >> >>>>>>> it, > > > >> send > > > >> >>>>>>> an email to racket...@googlegroups.com. > > > >> >>>>>>> For more options, visit https://groups.google.com/d/optout. > > > >> >>>>> > > > >> >>>> -- > > > >> >>>> You received this message because you are subscribed to the Google > > > >> Groups > > > >> >>>> "Racket Users" group. > > > >> >>>> To unsubscribe from this group and stop receiving emails from it, > > > >> send an > > > >> >>>> email to racket...@googlegroups.com. > > > >> >>>> For more options, visit https://groups.google.com/d/optout. > > > >> >> > > > >> >> -- > > > >> >> You received this message because you are subscribed to the Google > > > >> Groups > > > >> >> "Racket Users" group. > > > >> >> To unsubscribe from this group and stop receiving emails from it, > > > >> >> send > > > >> an > > > >> >> email to racket...@googlegroups.com. > > > >> >> For more options, visit https://groups.google.com/d/optout. > > > >> > > > >> -- > > > > You received this message because you are subscribed to the Google > > > > Groups > > > > "Racket Users" group. > > > > To unsubscribe from this group and stop receiving emails from it, send > > > > an > > > > email to racket-users+unsubscr...@googlegroups.com. > > > > To view this discussion on the web visit > > > > https://groups.google.com/d/msgid/racket-users/db96d3e9-be16-43f4-a9fa-9e008e3748e8%40googlegroups.com > > > > <https://groups.google.com/d/msgid/racket-users/db96d3e9-be16-43f4-a9fa-9e008e3748e8%40googlegroups.com?utm_medium=email&utm_source=footer> > > > > . > > > > > > > > > > -- > > > You received this message because you are subscribed to the Google Groups > > > "Racket Users" group. > > > To unsubscribe from this group and stop receiving emails from it, send an > > > email to racket-users+unsubscr...@googlegroups.com. > > > To view this discussion on the web visit > > > https://groups.google.com/d/msgid/racket-users/CAL3TdONV00LJ8yUMXyVK4SbzFr8qgGTfEwqcLPTz-1ocUkzgsw%40mail.gmail.com. > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Racket Users" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to racket-users+unsubscr...@googlegroups.com. > > To view this discussion on the web visit > > https://groups.google.com/d/msgid/racket-users/20200228123121.osgwqasvcww2jxoy%40topoi.pooq.com. > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-users/CAL3TdOPuwNNL0QYOcZUiiid5xeaSq2eNsuuK35VHy60oScjBrw%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. 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