how to use the G1 garbage collector
Does anyone know what to put in :jvm-opts in project.clj to use the G1 garbage collector? I see a lot about how G1 works and how to configure it in web search results, but not this little nugget of info. Also, if anyone has any advice about GC for my use case I'd love to hear it. My use case is: generating lots and lots of garbage in long-running, CPU-intensive, multicore processes. I want to minimize overall runtime and don't much care about responsiveness at all. Thanks, -Lee -- 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. For more options, visit https://groups.google.com/groups/opt_out.
Re: how to use the G1 garbage collector
I do it like this: in my .bashrc export JVM_OPTS=-XX:+UseG1GC export LEIN_JVM_OPTS=-XX:+UseG1GC You can verify that it's working by checking jvisualvm's view of the jvm-opts on the relevant processes. Running it system-wide has given me reduced memory-pressure on my lappie with no downside. On Fri, Feb 7, 2014 at 11:29 AM, Lee Spector lspec...@hampshire.edu wrote: Does anyone know what to put in :jvm-opts in project.clj to use the G1 garbage collector? I see a lot about how G1 works and how to configure it in web search results, but not this little nugget of info. Also, if anyone has any advice about GC for my use case I'd love to hear it. My use case is: generating lots and lots of garbage in long-running, CPU-intensive, multicore processes. I want to minimize overall runtime and don't much care about responsiveness at all. Thanks, -Lee -- 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. For more options, visit https://groups.google.com/groups/opt_out. -- 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. For more options, visit https://groups.google.com/groups/opt_out.
Re: how to use the G1 garbage collector
On Feb 7, 2014, at 11:35 AM, Gary Trakhman wrote: I do it like this: in my .bashrc export JVM_OPTS=-XX:+UseG1GC export LEIN_JVM_OPTS=-XX:+UseG1GC You can verify that it's working by checking jvisualvm's view of the jvm-opts on the relevant processes. Running it system-wide has given me reduced memory-pressure on my lappie with no downside. Interesting, but this is for processes that I'll be running on remote machines and I'd like all of the configuration to be in the Clojure project (ideally) or on the command line. -Lee -- 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. For more options, visit https://groups.google.com/groups/opt_out.
Re: how to use the G1 garbage collector
What if you put -XX:+UseG1GC in :jvm-opts ? 2014-02-07 17:38 GMT+01:00 Lee Spector lspec...@hampshire.edu: On Feb 7, 2014, at 11:35 AM, Gary Trakhman wrote: I do it like this: in my .bashrc export JVM_OPTS=-XX:+UseG1GC export LEIN_JVM_OPTS=-XX:+UseG1GC You can verify that it's working by checking jvisualvm's view of the jvm-opts on the relevant processes. Running it system-wide has given me reduced memory-pressure on my lappie with no downside. Interesting, but this is for processes that I'll be running on remote machines and I'd like all of the configuration to be in the Clojure project (ideally) or on the command line. -Lee -- 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. For more options, visit https://groups.google.com/groups/opt_out. -- 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. For more options, visit https://groups.google.com/groups/opt_out.
Re: how to use the G1 garbage collector
Both G1 and ConcurrentMarkSweep GC are meant to lower pauses (increase responsiveness), but generally increase total running time. So I don't know if it's ideal for the scenario you describe. On Friday, February 7, 2014 5:38:09 PM UTC+1, Lee wrote: On Feb 7, 2014, at 11:35 AM, Gary Trakhman wrote: I do it like this: in my .bashrc export JVM_OPTS=-XX:+UseG1GC export LEIN_JVM_OPTS=-XX:+UseG1GC You can verify that it's working by checking jvisualvm's view of the jvm-opts on the relevant processes. Running it system-wide has given me reduced memory-pressure on my lappie with no downside. Interesting, but this is for processes that I'll be running on remote machines and I'd like all of the configuration to be in the Clojure project (ideally) or on the command line. -Lee -- 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. For more options, visit https://groups.google.com/groups/opt_out.
Re: how to use the G1 garbage collector
On Feb 7, 2014, at 11:41 AM, Laurent PETIT wrote: What if you put -XX:+UseG1GC in :jvm-opts ? Ah yes -- I should have seen that even though I may not want to take Gary's suggestion of putting it in .bashrc, he had given me the magic string to include in :jvm-opts too! I will give that a try. Thanks so much, -Lee -- 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. For more options, visit https://groups.google.com/groups/opt_out.
