nodetool 87 Monitoring Using JConsole 88 Compaction Metrics 89 Thread Pool Statistics 90 Read/Write Latency Metrics 90 ColumnFamily Statistics 90 Monitoring and Adjusting Cache Performance 91 Tuning Cassandra primary considerations are (1) being able to satisfy reads locally, without incurring cross-datacenter latency, and (2) failure scenarios. The two most common ways to configure multiple data center clusters About Dynamic Snitching By default, all snitches also use a dynamic snitch layer that monitors read latency and, when possible, routes requests away from poorly-performing nodes. The dynamic snitch is enabled

middle boxes) ● High performance networking ○ Much higher multi-Gbps peak data speeds ○ Ultra low latency ○ And of course, reduce overheads introduced! ● High availability ● CapEx, OpEx #IstioCon Security Overheads introduced ● No high performance data path support ○ Multi-Gbps bandwidth ○ Ultra low latency #IstioCon Performance Limitations: Solutions ● Software techniques ○ (eBPF-based) TCP/IP stack co-designs #IstioCon Latency Analysis ● ~3ms P90 latency added ○ Istio v1.6 ○ More for VM usage ● Hotspots ○ 1  2 ○ 3  4: 30%~50% ● Others ○ Latency between Pods ○ Latency introduced by C/S #IstioCon

amount of churn in the Object Store ● Other alternatives ○ Maintain Change Log : grows too quickly, latency impact ○ Leverage LSM architecture - 46 © 2022 Cloudera, Inc. All rights reserved. SNAPSHOT DIFF OM - operations per second – Concurrency improvements – Caching background updates – Reducing latency per operation • Impala improvements against Ozone 69 © 2022 Cloudera, Inc. All rights reserved

Matter? 5G wireless technology is meant to deliver higher multi-Gbps peak data speeds, ultra low latency, more reliability, massive network capacity, increased availability, and a more uniform user

4, 8, 12 ns • Optional dedicated thread pool for asynchronous reclamation: • Robustness against latency spikes and deadlock. • Domains: • Robust default domain with expanded capabilities (cohorts, link