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  1. JDK
  2. JDK-8185005

Improve performance of ThreadMXBean.getThreadInfo(long ids[], int maxDepth)

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        The implementation of getThreadInfo(long ids[], int maxDepth) iterates over the ids array, calling Threads::find_java_thread_from_java_tid() for each one. find_java_thread_from_java_tid() does a linear search over the thread list, so if the ids array length is large, it can take quite some time to find the corresponding JavaThread*s. One idea is to add find_java_threads_from_java_tids() to get them all at once and have it put the content of the ids array into a set (hashtable, perhaps) for a "sufficiently large" ids array.

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                • Assignee:
                  dtitov Daniil Titov
                  Reporter:
                  phh Paul Hohensee
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