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JDK-8385892

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This commit is contained in:
MBaesken 2026-06-05 13:42:33 +02:00
parent cc69221519
commit 5bfe28b9d7
1 changed files with 27 additions and 0 deletions
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27
src/hotspot/os/linux/os_linux.cpp
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@ -2765,7 +2765,34 @@ void os::pd_print_cpu_info(outputStream* st, char* buf, size_t buflen) {
#if INCLUDE_JFR
// hwm (high water mark) in K for the VM RSS
static long jfr_rss_hwm_k = -1;
void os::jfr_report_memory_info() {
os::Linux::accurate_meminfo_t accurate_info;
if (os::Linux::query_accurate_process_memory_info(&accurate_info) && accurate_info.rss != -1) {
EventResidentSetSize event;
event.set_size(accurate_info.rss * K);
// unfortunately the smaps_rollup/accurate_info contains no hwm (high water mark) for RSS
struct rusage ru;
if (getrusage(RUSAGE_SELF, &ru) == 0) {
if (ru.ru_maxrss > jfr_rss_hwm_k) {
jfr_rss_hwm_k = ru.ru_maxrss;
}
}
// do not allow larger current RSS than hwm
if (accurate_info.rss > jfr_rss_hwm_k) {
jfr_rss_hwm_k = accurate_info.rss;
}
event.set_peak(jfr_rss_hwm_k * K);
event.commit();
return;
}
os::Linux::meminfo_t info;
if (os::Linux::query_process_memory_info(&info)) {
// Send the RSS JFR event