1. What is a safepoint and why might long time-to-safepoint (TTSP) spikes occur?
At safepoints the JVM halts mutator threads. If a thread can’t poll (e.g., busy native call or hot loop with eliminated polls), the VM waits, inflating pause time.
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Datadog · Java
Practice Java questions specifically asked in Datadog interviews – ideal for online test preparation, technical rounds and final HR discussions.
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At safepoints the JVM halts mutator threads. If a thread can’t poll (e.g., busy native call or hot loop with eliminated polls), the VM waits, inflating pause time.
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