James Allen
8db30020ae
Monitor event loop by looking for skew
...
If we monitor with setImmediate, we miss big blocking loops. For example,
suppose we have 1000 1ms loops then a single bad 1000ms loop. setImmediate
will only be called at the right time 1/1000 of the time (it has to be the
loop just before the bad one). So this monitoring method gives a good average
if the std dev is low, but doesn't pick up spikes.
Instead, we can monitor the skew from the expected time between setIntervals.
In the case above, with a setInterval for 1000ms, we will pick up a skew
proportional to the amount of time that it overlaps the bad loop. So 50%
change of picking up skew > 500ms, and thus getting a good sense of any
spikes.
2015-12-03 16:32:20 +00:00
James Allen
738363a6de
Set maxSockets to Infinity for all services
2015-08-31 14:02:03 +01:00
Brian Gough
0215b12a5f
log memory usage every minute
2015-08-20 17:03:58 +01:00
Brian Gough
f237f7c3cc
remove bug in optional argument handling
2015-08-18 11:23:10 +01:00
Brian Gough
27c382416a
fix whitespace
2015-08-17 15:19:13 +01:00
Brian Gough
e3e8d80466
remove non-working metrics from graphite
2015-08-17 15:19:07 +01:00
Brian Gough
d2af7b24a0
remove randomisation to avoid shutdown problems
2015-08-17 15:18:18 +01:00
Brian Gough
577a3759c0
bugfix for memory chunk size
2015-08-14 15:44:24 +01:00
Brian Gough
46ec20ef9c
add memory check and periodic gc
2015-08-14 14:38:24 +01:00
Brian Gough
175e3efd5f
update package version to 1.2.0
2015-08-06 09:40:58 +01:00
Brian Gough
349b499f85
add compatibility with v2 mongo driver
2015-07-30 08:57:43 +01:00
Brian Gough
ffa523bced
added monitoring of event loop time
...
should indicate if node is blocking on libuv threads
as described in https://nodejs.org/api/dns.html#dns_dns_lookup
2015-06-23 10:51:48 +01:00
Henry Oswald
9329249bc9
Revert "reduce memory capture in http logger"
...
This reverts commit fc2e043b20204e04f240814d4efc05762db7df96.
Had to revert this because req.route.path is not set until a matching
route has been hit, so it was always null inside res.end meaning
statsd data was never sent over.
This commit did not actually stop the memory leak so reverting it
has not short term repocusion
2015-05-14 16:14:24 +01:00
Brian Gough
1e0a991fcd
reduce memory capture in http logger
...
only capture the properties of 'req' that we need, to avoid leaking
the whole req object for responses that never call res.end()
2015-05-05 10:50:59 +01:00
Brian Gough
fa7e068ebb
update minor version, due to addition of new close() method
2015-01-05 16:46:44 +00:00
Brian Gough
30070f23b8
add a close() method to terminate the module cleanly
...
closes the statsd connection and cancels registered interval timers
prevents express from hanging when trying to shutdown
2015-01-05 16:45:32 +00:00
James Allen
60857982b6
Create LICENSE
2014-09-08 09:19:39 +01:00
James Allen
9acca85843
Release version 1.0.0
2014-08-19 13:32:41 +01:00
Henry Oswald
c8fae26995
changed type to query_type as it conflicts with logstash
2014-05-13 15:24:23 +01:00
James Allen
1dea55d8f2
Check that req.route.path is set
2014-05-12 15:28:09 +01:00
James Allen
284d8fb588
Namespace gauge keys correctly
2014-05-09 13:54:33 +01:00
James Allen
00c0036ca5
Add open socket monitoring
2014-05-09 13:30:12 +01:00
James Allen
86f220a2d2
Add collection into graphite key
2014-05-07 11:50:09 +01:00
James Allen
45ec60d8a6
Fix broken key building in timer
2014-05-07 11:43:46 +01:00
James Allen
873297b02e
Namespace http request keys
2014-05-07 11:13:21 +01:00
James Allen
befb48a20f
Use correct key in Metrics.timing
2014-05-07 11:08:46 +01:00
James Allen
f4895fb04f
Add in http monitoring
2014-05-07 10:58:52 +01:00
James Allen
4da7fa43fa
Scope name argument properly
2014-05-06 17:33:09 +01:00
James Allen
125790b604
Ignore all queries
2014-05-06 17:19:04 +01:00
James Allen
00c12ccab6
Remove redundant count
2014-05-06 17:06:34 +01:00
James Allen
15f85494b7
Sort out initialization and ignore noisy mongo requests
2014-05-06 17:02:51 +01:00
James Allen
42b500263a
Create metrics module
2014-05-06 16:52:03 +01:00
