Do we have any idea how that memory saving scales? I know a bunch of meta data isn’t needed as it is hotspot specific, but are there any other memory savings?
Sent from my iPhone > On 12 Nov 2019, at 18:42, Alan Thompson <clooj...@gmail.com> wrote: > > In my initial post, I failed to mention the huge memory savings achieved by > the standalone executable (in addition to the startup time savings). > > Note that using time at the command line resolves to a shell built-in > command. We can get more information from the standard Unix version of time: > # JVM+UberJar > > /usr/bin/time -l java -jar target/hello-world-0.1.0-SNAPSHOT-standalone.jar > Hello, World! > Goodbye... > 1.20 real 2.47 user 0.24 sys > 409 maximum resident set size (MB) > 100469 page reclaims > 3569 involuntary context switches > > # Static Executable > > /usr/bin/time -l target/hello-world > Hello, World! > Goodbye... > 0.00 real 0.00 user 0.00 sys > 2 maximum resident set size (MB) > 657 page reclaims > 4 involuntary context switches > So we see that the maximum RSS memory requirement was reduced from 409 MB to > 2 MB. Yes, an improvement over 200x! Note also that context switches have > been reduced by 900x, and page reclaims by about 200x. > > So, it is the combination of reduced startup time and vastly reduced memory > requirements that make standalone executables ideal for short-lived tasks, > especially in constrained environments such as serverless/lambda. > > > >> On Sun, Nov 10, 2019 at 7:54 AM Michiel Borkent <michielbork...@gmail.com> >> wrote: >> Might be worth mentioning that lread and I are collecting information about >> GraalVM here: >> >> https://github.com/lread/clj-graal-docs >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with your >> first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/clojure/8dbd1a23-61b4-42dc-8815-3d8422956901%40googlegroups.com. > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your > first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/clojure/CAN67zA1USV_sX0bP%3Dg-p0r7%2BqMOvYscWY9aj7yBnYsSeikcskQ%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/clojure/9657973F-BAD3-4EBE-8648-7FA492F19E76%40gmail.com.
