It would be good to reproduce this with cypari2 alone. cypari2 is known to have similar kind (?) of problems: https://github.com/sagemath/cypari2/issues/112
On Thu, Aug 29, 2024 at 6:47 PM Nils Bruin <nbr...@sfu.ca> wrote: > > On Thursday 29 August 2024 at 09:51:04 UTC-7 Georgi Guninski wrote: > > I observe that the following does not leak: > > E=EllipticCurve([5*13,0]) #no leak > rn=E.root_number() > > > How do you know that doesn't leak? Do you mean that repeated execution of > those commands in the same session does not swell memory use? > > > The size of the leak is suspiciously close to a power of two. > > > I don't think you can draw conclusions from that. Processes generally request > memory in large blocks from the operating system, to amortize the high > overhead in the operation. It may even be the case that 128 Mb is the chunk > size involved here! The memory allocated to a process by the operating system > isn't a fully accurate measure of memory allocation use in the process > either: a heap manager can decide it's cheaper to request some new pages from > the operating system than to reorganize its heap and reuse the fragmented > space on it. I think for this loop, memory allocation consistently swells > with repeated execution, so there probably really is something leaking. But > given that it's not in GC-tracked objects on the python heap, one would > probably need valgrind information or a keen look at the code involved to > locate where it's coming from. > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-devel/e63e2ec9-106a-4ddd-ab16-5c6db4fe83b4n%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/CAAWYfq2-ja6g31TL0D5Bsx9s7-%2B%2BCwNJE7Grn2U%2BrN6_5Wzqww%40mail.gmail.com.
