ZFS TCP/UDP 1 LVM IP Virtual Block Device Interface Ethernet Memory Device Drivers DRAM I/O Bridge I/O Controller Network Controller Disk Disk Port Port Sunday, February 24, 13 System Libraries System Call Interface VFS Sockets Scheduler CPU ext3/. Hardware Applications DBs, all server types. Then, some methodologies for applying them Sunday, February 24, 13.Quick tour of tools, to show what can be done Monitoring products often use the same metrics, read from /proc. ), even if you intend to use a monitoring product. It’s also worth studying common system metrics (iostat.Ethernet Device Drivers Sunday, February 24, 13 ZFS TCP/UDP LVM IP Virtual Memory Block Device Int. System Libraries user-level System Call Interface kernel-level VFS Sockets Scheduler Linux Kernel ext3/. Need to know some kernel internals Operating System Applications DBs, all server types.
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2-2000x wins: identifying and eliminating unnecessary work Sunday, February 24, 13īe top-down, or bottom-up: Workload Workload Developers Application Analysis System Libraries Operating System System Calls Software Stack Kernel Resource Sysadmins Devices Analysis Sunday, February 24, 13.Analyze application perf from kernel/system context.Kernels change, new devices are added, workloads scale, and new perf issues are encountered.2-200x wins: bugs, disabled features, perturbations causing latency outliers.2-20% wins: I/O or buffer size tuning, NUMA config, etc.Solve issues – locate bottlenecks and latency outliers Sunday, February 24, 13.Build scalable architectures – understand system limits and develop around them.Reduce IT spend – find and eliminate waste, find areas to tune, and do more with less.The primary operating system for my next book: (secondary is the OpenSolaris-illumos-based SmartOS) Systems Performance ENTERPRISE AND THE CLOUD Brendan Gregg Prentice Hall, 2013 Sunday, February 24, 13 KVM for Linux guests Sunday, February 24, 13Įxample perf issues, including new tools and visualizations: Sunday, February 24, 13.Core developers of SmartOS and node.js.OS-Virtualization for bare metal performance (Zones).Compete on cloud instance/OS performance.Was Microsystems, Oracle, now Joyent Sunday, February 24, 13.Work/Research: tools, visualizations, methodologies.ZFS TCP/UDP 1 LVM IP Virtual Memory Block Device Interface Ethernet Memory Bus Device Drivers DRAM I/O Bus I/O Bridge Expander Interconnect I/O Controller Network Controller Interface Transports Disk Disk Port Port Sunday, February 24, 13 System Libraries CPU System Call Interface Inter- connect VFS Sockets Scheduler CPU Linux Kernel ext3/. Brendan Gregg Lead Performance Engineer SCaLE11x February, 2013 Sunday, February 24, 13
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