https://userapps.support.sap.com/sap/support/knowledge/en/2884635
2884635 - IPHR in-memory tracing in systems under stress can result in a range of performance...
To qualify and a match for this issue the IQ system must be running with the IPHR in-memory trace flags -iqiphrtracing and -iq_thread_msg_buf_size set. If this...