LATENCYTOP - Online Linux Manual PageSection : 8
Updated : November 9, 2008
NAMElatencytop − a tool for developers to visualize system latencies
SYNOPSISlatencytop [--unknown] [processes...]
DESCRIPTIONThis manual page documents briefly the latencytop command. latencytop is a Linux* tool for software developers (both kernel and userspace), aimed at identifying where in the system latency is happening, and what kind of operation/action is causing the latency to happen so that the code can be changed to avoid the worst latency hiccups. LatencyTOP focuses on the cases where the applications want to run and execute useful code, but there's some resource that's not currently available (and the kernel then blocks the process). This is done both on a system level and on a per process level, so that you can see what's happening to the system, and which process is suffering and/or causing the delays. You can walk the processes by using the cursor keys. If you press s followed by a letter, then only active processes starting with that lettter are displayed and walked. If you press s followed by 0 then that filter is reset.
SEE ALSOpowertop(1)
The program is more fully described at http://www.latencytop.org
AUTHORlatencytop was written by Arjan van de Ven <arjan@linux.intel.com>. This manual page was written by Giacomo Catenazzi <cate@debian.org>, for the Debian project (but may be used by others). 0
Johanes Gumabo
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