---------- Forwarded message --------- From: Stefan Reich <stefan.reich.maker.of....@googlemail.com> Date: Thu, 5 May 2022 at 13:58 Subject: Re: Native memory report To: Jeremy Whiting <jwhit...@redhat.com>
Hi Thomas and Jeremy, thank you for your hints. The process is running smoothly right now (resident size <2GB) so I assume there is nothing to debug... I'll keep your suggestions filed if a problem arises again. JVM's name is cleared for now :) Thanks, Stefan On Thu, 5 May 2022 at 13:23, Jeremy Whiting <jwhit...@redhat.com> wrote: > Hi Stefan, > Did you try native memory allocation diagnosis ? > This is a blog post showing how to use jemalloc and jeprof to identify > the cause in your JVM. > > > https://technology.blog.gov.uk/2015/12/11/using-jemalloc-to-get-to-the-bottom-of-a-memory-leak/ > > Regards, > Jeremy > > -- > -- > Jeremy Whiting > Senior Software Engineer, Middleware Performance Team > Red Hat > > ------------------------------------------------------------ > Registered Address: Red Hat UK Ltd, Peninsular House, 30 Monument Street, > London. United Kingdom. > Registered in England and Wales under Company Registration No. 03798903. > Directors: Directors:Michael Cunningham (US), Michael O'Neill(Ireland), > Eric Shander (US) > > On Thu, 21 Apr 2022 at 01:55, Stefan Reich < > stefan.reich.maker.of....@googlemail.com> wrote: > >> Hi, >> >> the problem occurred again (huge resident size despite small heap). This >> time I could gather this report. What to make of it? >> >> Greetings >> Stefan >> >> Native Memory Tracking: >> >> Total: reserved=13076774KB, committed=10792378KB >> - Java Heap (reserved=2097152KB, committed=1162240KB) >> (mmap: reserved=2097152KB, >> committed=1162240KB) >> >> - Class (reserved=1052755KB, committed=19667KB) >> (classes #23245) >> ( instance classes #22394, array classes >> #851) >> (malloc=4179KB #104371) >> (mmap: reserved=1048576KB, committed=15488KB) >> ( Metadata: ) >> ( reserved=180224KB, committed=177856KB) >> ( used=176408KB) >> ( free=1448KB) >> ( waste=0KB =0.00%) >> ( Class space:) >> ( reserved=1048576KB, committed=15488KB) >> ( used=14496KB) >> ( free=992KB) >> ( waste=0KB =0.00%) >> >> - Thread (reserved=194875KB, committed=18847KB) >> (thread #191) >> (stack: reserved=194340KB, committed=18312KB) >> (malloc=314KB #1142) >> (arena=221KB #378) >> >> - Code (reserved=260127KB, committed=156987KB) >> (malloc=12439KB #33280) >> (mmap: reserved=247688KB, committed=144548KB) >> >> - GC (reserved=9014115KB, committed=8979499KB) >> (malloc=8902991KB #14257646) >> (mmap: reserved=111124KB, committed=76508KB) >> >> - Compiler (reserved=1934KB, committed=1934KB) >> (malloc=1769KB #2309) >> (arena=165KB #5) >> >> - Internal (reserved=14536KB, committed=14536KB) >> (malloc=14500KB #72221) >> (mmap: reserved=36KB, committed=36KB) >> >> - Other (reserved=510KB, committed=510KB) >> (malloc=510KB #320) >> >> - Symbol (reserved=10841KB, committed=10841KB) >> (malloc=8244KB #307589) >> (arena=2597KB #1) >> >> - Native Memory Tracking (reserved=231067KB, committed=231067KB) >> (malloc=38KB #500) >> (tracking overhead=231028KB) >> >> - Shared class space (reserved=12288KB, committed=12044KB) >> (mmap: reserved=12288KB, committed=12044KB) >> >> - Arena Chunk (reserved=4714KB, committed=4714KB) >> (malloc=4714KB) >> >> - Logging (reserved=5KB, committed=5KB) >> (malloc=5KB #211) >> >> - Arguments (reserved=2KB, committed=2KB) >> (malloc=2KB #71) >> >> - Module (reserved=631KB, committed=631KB) >> (malloc=631KB #3213) >> >> - Safepoint (reserved=8KB, committed=8KB) >> (mmap: reserved=8KB, committed=8KB) >> >> - Synchronization (reserved=237KB, committed=237KB) >> (malloc=237KB #1697) >> >> - Metaspace (reserved=755KB, committed=755KB) >> (malloc=755KB #609) >> >> - Unknown (reserved=180224KB, committed=177856KB) >> (mmap: reserved=180224KB, committed=177856KB) >> >> >> -- >> == Gaz.AI == >> _______________________________________________ >> hotspot-gc-use mailing list >> hotspot-gc-use@openjdk.java.net >> https://mail.openjdk.java.net/mailman/listinfo/hotspot-gc-use >> > > > -- == Gaz.AI == -- == Gaz.AI ==
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