11-02-2019
How to find out and monitor IO spikes history in Linux?
hello all
i have application which according to AWS monitoring is reaching to high spikes of IO at random time .
and causing the server to crash and restart .
my question is how can i find out what cause the spike and if i can't with the native linux tools
what free open source minimon intrusive monitor i can use ?
thanks
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LEARN ABOUT DEBIAN
eventlogger
EVENTCOUNTER(1) General Commands Manual EVENTCOUNTER(1)
NAME
eventcounter, eventgenerator, eventlogger, eventselect, eventsink, eventsource, viewevents - utility applications which can be used
together with other MUSIC-aware applications in multi-simulations
SYNOPSIS
eventcounter [-tbmh ] n_units prefix [ suffix ]
eventgenerator [-tbfmih ] n_units
eventlogger [-tlbmih ]
eventselect [-th ] n_units units
eventsink [-tmih ] n_units prefix [ suffix ]
eventsource [-tbmih ] n_units prefix [ suffix ]
viewevents [-tshT ] configfile
DESCRIPTION
This manual page documents briefly a set of MUSIC-aware utility applications provided together with MUSIC library.
eventcounter receives spikes through a MUSIC input port, counts all spikes for each index and writes the frequencies to a set of files with
names prefix rank suffix
eventgenerator generates spikes from a Poisson distribution.
eventlogger logs spikes from a MUSIC port.
eventselect receives events from an input port of width n_units and sends events for the subset of id:s specified in the file units
eventsink receives spikes through a MUSIC input port and writes these to a set of files with names prefix rank suffix
eventsource reads spikes from a set of files with names prefix rank suffix and propagates these spikes through a MUSIC output port.
viewevents reads spikes from a MUSIC input port and displays them as a 3D graphical representation.
OPTIONS
The utilities follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included
below.
-b ticks, --maxbuffered ticks
Specify maximal amount of data buffered.
-f freq, --frequency
Specify average frequency (default 10 Hz).
-h, --help
Show usage information.
-i, --indextype
Select global (default) or local indices. (Used for testing and benchmarking purposes.)
-l latency, --acclatency latency
Specify acceptable data latency (s).
-m type, --imaptype type
Select linear (default) or roundrobin index map.
-s scaling, --scaletime scaling
Specify real time to simulated time scale factor (s). If omitted, the visualization runs at full speed.
-t timestep, --timestep timestep
Specify time between tick() calls (default 0.01 s).
-T title, --title title
Specify window title.
SEE ALSO
music(1)
AUTHOR
MUSIC was written by Mikael Djurfeldt and Orjan Ekeberg for INCF. viewevents was written by Johannes Hjorth for INCF.
This manual page was written by Mikael Djurfeldt <mdj@debian.org>, for the Debian project (but may be used by others).
March 5, 2009 EVENTCOUNTER(1)