perhaps using jconsole instead of jqt can confirm memory leak with a higher accuracy.
On 10 Dec, 2016 7:38 am, "'Pascal Jasmin' via Beta" <[email protected]> wrote: > I guess it is echo related then, but the result of the function is just a > single number, and if you repeatedly load the file such that both echo > statements run, memory use in task manager goes up 10mb per load and stayed > there a long time. > > The same file load technique did not cause j804 to jump in memory use. > > Though not a testcase, solving adventofcode problem from last night > through repeated edit and file load including echo similar statements, I > woke up and J was "still" using 2gb of ram (as per task manager). > > > > > ----- Original Message ----- > From: bill lam <[email protected]> > To: [email protected] > Sent: Friday, December 9, 2016 6:05 PM > Subject: Re: [Jbeta] possible memory leak j805 > > memory reported in task manager for jqt task includes both jqt front-end > and j engine. each echo will print extra text in term and that requires > extra memory for the front-end, the memory committed by j engine should be > measured by 7!:0'' . > > > On 10 Dec, 2016 6:37 am, "Henry Rich" <[email protected]> wrote: > > > Can you give more details on how to reproduce this? When I load the > > script and repeatedly execute > > > > f2 '(27x12)(20x12)(13x14)(7x10)(1x12)A' > > > > I don't see any memory increase in J or in Task Manager. > > > > If I put 'echo' in front of the f2, I do see memory increasing, but that > > might be because of the file I/O or something. I need a testcase to show > > the memory leak. > > > > Henry Rich > > > > On 12/9/2016 10:03 AM, 'Pascal Jasmin' via Beta wrote: > > > >> The sample code is fairly quick to run. > >> > >> > >> I can confirm that the code below grows memory use in task manager > after > >> each run without releasing after a couple of minutes idle. > >> > >> it does not "leak" with > >> > >> > >> JVERSION > >> Engine: j803/2014-10-19-11:11:11 > >> Library: 8.04.15 > >> Qt IDE: 1.4.10/5.4.2 > >> Platform: Win 64 > >> > >> > >> ----- Original Message ----- > >> From: 'Pascal Jasmin' via Beta <[email protected]> > >> To: Beta Forum <[email protected]> > >> Sent: Friday, December 9, 2016 9:53 AM > >> Subject: [Jbeta] possible memory leak j805 > >> > >> part 2 of adventofcode day 9, took over 1 hour to run, and in the end > was > >> left with 2gb+ memory use by J. > >> > >> following was in a file and loaded, though an echo lines just called f2 > >> on a variable holding input. Perhaps this is faster on earlier > versions of > >> J? > >> > >> issues that might cause a leak: > >> I am reassigning y, but I am also recursing inside a loop. > >> > >> I'm not positive this code creates a leak. I will rerun it on my > machine > >> too. I may have done something unrelated (or a different attempt) to > >> consume memory. > >> > >> > >> JVERSION > >> Engine: j805/j64/windows > >> Beta-12: commercial/2016-09-30T15:50:47 > >> Library: 8.05.09 > >> Qt IDE: 1.5.2/5.6.2 > >> Platform: Win 64 > >> > >> > >> > >> f2 =: 3 : 0 > >> o =. 0 > >> while. (# y) > e =. ')' i.~ y do. > >> b =. '(' i:~ e {. y > >> i =. ". every 'x' cut y{~ b + >:i. <:e -b > >> o =. o + b + f2 i expand (>:e )}. y > >> y =. ({.i) }. (>:e) }. y > >> end. > >> o + #y > >> ) > >> > >> expand =: */@:[ $ {.@[ {. ] > >> > >> echo f2 '(27x12)(20x12)(13x14)(7x10)(1x12)A' > >> echo f2 '(25x3)(3x3)ABC(2x3)XY(5x2)PQRSTX(18x9)(3x2)TWO(5x7)SEVEN' > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > >> > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
