Resmon NPM | npm.io

Resmon

Simple wrapper around sar(1), using EventEmitter.

Install

npm install resmon

Usage

var SAR = require('resmon');
var daemon = new SAR();
daemon.on('cpu', function(stat) {
  /* ... */
});
daemon.start();

Events

For details, see man sar.

SAR instance emits objects, the keys are field names, the values are arrays, eg. if you have multiple CPU cores:

var SAR = require('resmon');
var daemon = new SAR();
daemon.on('cpu', function(stat) {
  console.log(stat['%usr'][0]);
  //display CPU utilization percentage (at user level) for all CPUs
  //usually the first row contains aggregated (sum, avg, etc.) values
});

cpu

Fields: CPU, %usr, %nice, %sys, %iowait, %steal, %irq, %soft, %guest, %idle

task

Fields: proc/s, cswch/s

int

Fields: INTR, intr/s

swapPages

Fields: pswpin/s, pswpout/s

page

Fields: pgpgin/s, pgpgout/s, fault/s, majflt/s, pgfree/s, pgscank/s, pgscand/s, pgsteal/s, %vmeff

io

Fields: tps, rtps, wtps, bread/s, bwrtn/s

memoryPages

Fields: frmpg/s, bufpg/s, campg/s

memory

Fields: kbmemfree, kbmemused, %memused, kbbuffers, kbcached, kbcommit, %commit, kbactive, kbinact

swap

Fields: kbswpfree, kbswpused, %swpused, kbswpcad, %swpcad

kernel

Fields: dentunusd, file-nr, inode-nr, pty-nr

load

Fields: runq-sz, plist-sz, ldavg-1, ldavg-5, ldavg-15, blocked

block

Fields: DEV, tps, rd_sec/s, wr_sec/s, avgrq-sz, avgqu-sz, await, svctm, %util

net:dev

Fields: IFACE, rxpck/s, txpck/s, rxkB/s, txkB/s, rxcmp/s, txcmp/s, rxmcst/s

net:edev

Fields: IFACE, rxerr/s, txerr/s, coll/s, rxdrop/s, txdrop/s, txcarr/s, rxfram/s, rxfifo/s, txfifo/s

net:nfs

Fields: call/s, retrans/s, read/s, write/s, access/s, getatt/s

net:nfsd

Fields: scall/s, badcall/s, packet/s, udp/s, tcp/s, hit/s, miss/s, sread/s, swrite/s, saccess/s, sgetatt/s

net:sock

Fields: totsck, tcpsck, udpsck, rawsck, ip-frag, tcp-tw

net:ip

Fields: irec/s, fwddgm/s, idel/s, orq/s, asmrq/s, asmok/s, fragok/s, fragcrt/s

net:eip

Fields: ihdrerr/s, iadrerr/s, iukwnpr/s, idisc/s, odisc/s, onort/s, asmf/s, fragf/s

net:icmp

Fields: imsg/s, omsg/s, iech/s, iechr/s, oech/s, oechr/s, itm/s, itmr/s, otm/s, otmr/s, iadrmk/s, iadrmkr/s, oadrmk/s, oadrmkr/s

net:eicmp

Fields: ierr/s, oerr/s, idstunr/s, odstunr/s, itmex/s, otmex/s, iparmpb/s, oparmpb/s, isrcq/s, osrcq/s, iredir/s, oredir/s

net:tcp

Fields: active/s, passive/s, iseg/s, oseg/s

net:etcp

Fields: atmptf/s, estres/s, retrans/s, isegerr/s, orsts/s

net:udp

Fields: idgm/s, odgm/s, noport/s, idgmerr/s

net:sock6

Fields: tcp6sck, udp6sck, raw6sck, ip6-frag

net:ip6

Fields: irec6/s, fwddgm6/s, idel6/s, orq6/s, asmrq6/s, asmok6/s, imcpck6/s, omcpck6/s, fragok6/s, fragcr6/s

net:eip6

Fields: ihdrer6/s, iadrer6/s, iukwnp6/s, i2big6/s, idisc6/s, odisc6/s, inort6/s, onort6/s, asmf6/s, fragf6/s, itrpck6/s

net:icmp6

Fields: imsg6/s, omsg6/s, iech6/s, iechr6/s, oechr6/s, igmbq6/s, igmbr6/s, ogmbr6/s, igmbrd6/s, ogmbrd6/s, irtsol6/s, ortsol6/s, irtad6/s, inbsol6/s, onbsol6/s, inbad6/s, onbad6/s