On Thu, Jun 13, 2013 at 1:27 AM, Josal <[email protected]> wrote: > Hi, > > I have a problem with R14 errors. > > I run a process in a worker dyno. It converts a list of images to a single > pdf with imagemagick. It's well known that this tool uses a lot of memory. > I'm currently making a syscall directly because it seems it works better > than rmagick gem regarding the R14 errors. I can provide more details on > this as I've tried many options here, limiting the memory, even talking with > heroku support, etc > (http://stackoverflow.com/questions/16918845/almost-solved-heroku-worker-dyno-giving-r14-errors-problems-with-memory-mana) > > Eventually, the process throws R14 errors depending on the file I'm > processing and also depending on the context (because it doesn't throw the > errors always with the same files). > > At the end, the files are sucessfully generated even with R14 errors. But I > guess it's not a very stable situation for my production app.
Yeah, one is running close to the edge. It's good you saw the warning. > I want to detect the R14 errors before they happen. I know oink gem but the > situation is that I cannot call any method while the syscall is running. The > R14 errors appear while the syscall is running. How can I predetect them in > execution time? Something like a wrapper for this syscall which monitors the > use of memory and throws a controlled exception if the memory usage is > exceeded? Like Timeout::timeout but related to memory instead of time? :-s You can monitor memory usage in /proc, but what were you planning to do, exactly? Crash the Dyno? Because that's what would eventually end up happening. I suppose some some finesse you could try to abort very specific bad jobs. Have you considered use of 2x dynos? They cost twice as much, but ofttimes one only needs half as many, or even less on account of some of the efficiency benefits of more monolithic computation. It may give your program more breathing room. -- -- You received this message because you are subscribed to the Google Groups "Heroku" group. To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/heroku?hl=en_US?hl=en --- You received this message because you are subscribed to the Google Groups "Heroku Community" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
