Java jvm选项-XX:+；SafepointTimeout-XX:SafepointTimeoutDelay外观不'；行不通

我在jvm safepoint.log中的服务器上检测到长safepoints（>10秒！）：

6534.953: no vm operation                  [     353          0              4    ]      [     0     0 14179     0     0    ]  0
7241.410: RevokeBias                       [     357          0              1    ]      [     0     0 14621     0     0    ]  0
8501.278: BulkRevokeBias                   [     356          0              6    ]      [     0     0 13440     0     2    ]  0
9667.681: no vm operation                  [     349          0              8    ]      [     0     0 15236     0     0    ]  0
12094.170: G1IncCollectionPause             [     350          0              4    ]      [     0     0 15144     1    24    ]  0
13383.412: no vm operation                  [     348          0              4    ]      [     0     0 15783     0     0    ]  0
13444.109: RevokeBias                       [     349          0              2    ]      [     0     0 16084     0     0    ]  0

Java HotSpot(TM) 64-Bit Server VM (25.202-b08) for linux-amd64 JRE (1.8.0_202-b08), built on Dec 15 2018 12:40:22 by "java_re" with gcc 7.3.0
...
-XX:+PrintSafepointStatistics 
-XX:PrintSafepointStatisticsCount=10
-XX:+UnlockDiagnosticVMOptions 
-XX:+LogVMOutput
-XX:LogFile=/opt/pprb/card-pro/pci-pprb-eip57/logs/safepoint.log
-XX:+SafepointTimeout 
-XX:SafepointTimeoutDelay=1000
...

在我的笔记本电脑上，我玩过-XX:SafepointTimeoutDelay=2 它工作良好，打印坏线程：

# SafepointSynchronize::begin: Timeout detected: 
...
# SafepointSynchronize::begin: (End of list)
<writer thread='11267'/>
         vmop                    [threads: total initially_running wait_to_block]    [time: spin block sync cleanup vmop] page_trap_count
567.766: BulkRevokeBias                   [      78          1              2    ]      [     0     6     6     0     0    ]  0

---

您重新启动了VM，对吗？也许可以尝试添加-XX:+PrintGCApplicationStoppedTime以查看是否获得更多信息？Chris，是的，已重新启动。我们已经有了

-XX:+PrintGCApplicationStoppedTime

。在GC日志中，我看到了相同的问题：

2019-03-25T12:42:57.678+0300:6777.056：应用程序线程停止的总时间：18.0049752秒，停止线程花费：18.0036770秒

创建一个本机线程，例如每100毫秒唤醒一次，并检查它是否也经历了长时间的暂停。在任何情况下，始终监视操作系统内存使用情况、I/O使用情况等。