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5400 Commits

Author SHA1 Message Date
antirez
0dcc754f68 LATENCY HISTORY returns empty array if no data is available. 
Previously we returned an error.
 2014-07-10 16:20:40 +02:00
antirez
067e365042 Fixed a few missing newline in createLatencyReport(). 2014-07-09 16:45:40 +02:00
antirez
fda2b30346 createLatencyReport(): compile before commit avoids commits. 2014-07-08 17:17:08 +02:00
antirez
924dc9731f createLatencyReport(), fix mount option name. 2014-07-08 17:12:21 +02:00
antirez
51e01c0450 createLatencyReport(): initialize all advices to zero. 2014-07-08 17:11:56 +02:00
antirez
7fb90a670e LATENCY DOCTOR first implementation complete. 2014-07-08 17:05:56 +02:00
antirez
57e931debc Fix analyzeLatencyForEvent() MAD computation. 2014-07-08 12:56:45 +02:00
antirez
2a232dfa9a LATENCY DOCTOR: initial draft and events summary output. 2014-07-08 11:31:46 +02:00
antirez
19853db892 Latency: low level time series analysis implemented. 2014-07-07 15:00:01 +02:00
antirez
b2604dc58c LATENCY SAMPLES renamed LATENCY HISTORY. 2014-07-07 12:35:24 +02:00
antirez
f8934657b2 LATENCY RESET implemented. 2014-07-07 12:34:54 +02:00
antirez
2de5bab368 Better "final read from parent" algorithm in rewriteAppendOnlyFile*(. 
We now wait up to 1 second for diff data to come from the parent,
however we use poll(2) to wait for more data, and use a counter of
contiguous failures to get data for N times (set to 20 experimentally
after different tests) as an early stop condition to avoid wasting 1
second when the write traffic is too low.
 2014-07-05 15:42:24 +02:00
antirez
895409ca78 Log AOF diff sizes in MBs instead of bytes. 2014-07-05 12:37:44 +02:00
antirez
93cd75bbe0 aofChildWriteDiffData() better handling of free blocks. 2014-07-05 01:11:28 +02:00
antirez
ac33c049c6 redis-benchmark: abort when all clients are disconnected. 2014-07-04 17:52:18 +02:00
antirez
20a0959964 Fine tuning of aofReadDiffFromParent() calls trigger. 2014-07-04 17:51:03 +02:00
antirez
cc24447a1a Use amount of I/O not ops to trigger aofReadDiffFromParent(). 2014-07-04 16:03:46 +02:00
antirez
62f9d34c56 aofChildWriteDiffData(): write as much as possible. 2014-07-04 15:54:20 +02:00
antirez
30c42f12b0 Handle write failure in AOF parent -> child ACK. 2014-07-04 15:37:49 +02:00
antirez
75ef41058d Use a timeout when reading parent ack from AOF child. 2014-07-04 15:35:01 +02:00
antirez
2fa9fb647f Send AOF diffs from parent to child to improve latency. 2014-07-04 15:27:23 +02:00
antirez
57852ff207 Use fsync instead of aof_fsync in final AOF sync. 
This happens in the child process so we don't care about latency:
better to sync metadata as well.
 2014-07-04 11:51:30 +02:00
antirez
a99766fda1 Fixed conditional for aof-write-pending-fsync latency event selection. 2014-07-02 17:42:29 +02:00
antirez
f0f9d583ad Dependencies updated. 2014-07-02 17:04:14 +02:00
antirez
1f665d6e82 Cast void* to char* to avoid waring in latencyCommand(). 2014-07-02 16:56:08 +02:00
antirez
e3c0125b70 Properly initialize min/max in latency.c. 2014-07-02 16:55:34 +02:00
antirez
a887af34e1 latencyStartMonitor() modified to avoid warnings. 2014-07-02 16:53:44 +02:00
antirez
53ae687d59 Latency monitor: specialize delayed aof writes events. 2014-07-02 16:45:45 +02:00
antirez
a53c734094 LATENCY GRAPH: filling under the curve is more readable. 2014-07-02 16:37:53 +02:00
antirez
aa16f87b87 LATENCY GRAPH implemented. 2014-07-02 16:31:22 +02:00
antirez
6f20482a86 latencyTimeSeries structure max field type fixed. 2014-07-02 16:14:28 +02:00
antirez
9d4d810861 Free labels in freeSparklineSequence(). 2014-07-02 12:49:14 +02:00
antirez
1766d91697 LATENCY LATEST: add the max field. 2014-07-02 12:40:38 +02:00
antirez
e173f7a0e3 Latency monitor trheshold value is now configurable. 
This commit adds both support for redis.conf and CONFIG SET/GET.
 2014-07-02 12:28:17 +02:00
antirez
cc4df5a6b8 ASCII sparklines generation API. 2014-07-02 10:13:53 +02:00
antirez
ed4980243a License added to latency.h. 2014-07-02 10:06:58 +02:00
antirez
b809676a9e Latency monitor turned off by default. 
It is not a good idea to bloat the code with gettimeofday() calls if the
instance is working well, and turning monitoring on at runtime is a
joke.
 2014-07-01 17:23:59 +02:00
antirez
de88bc63d5 Latency monitor: more hooks around the code. 2014-07-01 17:19:08 +02:00
antirez
f35abe2ff5 Latency monitor: don't add new samples in the same second. 
Instead we update the old sample with the new latency if it is greater.
 2014-07-01 17:12:09 +02:00
antirez
83beaa886c LATENCY LATEST implemented. 2014-07-01 16:17:33 +02:00
antirez
753b707d2a Latency monitor: command duration is in useconds. Convert. 2014-07-01 16:09:02 +02:00
antirez
551bee86b4 LATENCY SAMPLES implemented. 2014-07-01 16:07:13 +02:00
antirez
8612e6de88 Latency monitor: collect slow commands. 
We introduce the distinction between slow and fast commands since those
are two different sources of latency. An O(1) or O(log N) command without
side effects (can't trigger deletion of large objects as a side effect of
its execution) if delayed is a symptom of inherent latency of the system.

A non-fast command (commands that may run large O(N) computations) if
delayed may just mean that the user is executing slow operations.

The advices LATENCY should provide in this two different cases are
different, so we log the two classes of commands in a separated way.
 2014-07-01 11:47:08 +02:00
antirez
d7a07a2012 Latency monitor: basic samples collection. 2014-07-01 11:30:15 +02:00
antirez
0afb7a48c0 Fix Solaris compilation due to ctime_r() call. 
Introduced in Redis 2.8.10 because of a change in Sentinel.
This closes issue #1837.
 2014-06-30 16:29:12 +02:00
antirez
683f41adf2 DEBUG CMDKEYS moved to COMMAND GETKEYS. 2014-06-27 12:22:15 +02:00
antirez
885b6fc577 COMMAND COUNT subcommand added. 2014-06-27 12:11:15 +02:00
antirez
a92ae77740 COMMAND: fix argument parsing. 
This fixes detection of wrong subcommand (that resulted in the default
all-commands output instead) and allows COMMAND INFO to be called
without arguments (resulting into an empty array) which is useful in
programmtically generated calls like the following (in Ruby):

    redis.commands("command","info",*mycommands)

Note: mycommands may be empty.
 2014-06-27 12:05:54 +02:00
antirez
7fd0149d34 COMMANDS command renamed COMMAND. 2014-06-27 12:01:29 +02:00
antirez
9bf6921f3d COMMANDS command: remove static + aesthetic changes. 
Static was removed since it is needed in order to get symbols in stack
traces. Minor changes in the source code were operated to make it more
similar to the existing Redis code base.
 2014-06-27 11:59:48 +02:00