Performance issues
This topic helps you to troubleshoot issues and improve performance using Kudu
tracing, memory limits, block size cache, heap sampling, and name service cache daemon
(nscd).
Kudu tracing Memory limits --memory_limit_hard_bytes flag. The soft memory limit is a percentage of the hard memory limit, controlled by the flag memory_limit_soft_percentage and with a default value of 80%, that determines the amount of memory a process may use before it will start rejecting some write operations.Block cache size --block_cache_capacity_mb flag. The default is 512 MiB.Heap sampling Slow name resolution and nscd nscd (name service cache daemon) to cache both DNS name resolution and static name resolution (via /etc/hosts). 