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CONTRIB: opentracing: add the OpenTracing filter This commit adds the OpenTracing filter (hereinafter we will use the abbreviated name 'the OT filter') to the contrib tree. The OT filter adds native support for using distributed tracing in HAProxy. This is enabled by sending an OpenTracing compliant request to one of the supported tracers; such as Datadog, Jaeger, Lightstep and Zipkin tracers. Please note: tracers are not listed by any preference, but alphabetically. The OT filter is a standard HAProxy filter, so what applies to others also applies to this one (of course, by that I mean what is described in the documentation, more precisely in the doc/internals/filters.txt file). The OT filter activation is done explicitly by specifying it in the HAProxy configuration. If this is not done, the OT filter in no way participates in the work of HAProxy. As for the impact on HAProxy speed, this is documented with several tests located in the test directory, and the result is found in the README-speed-* files. In short, the speed of operation depends on the way it is used and the complexity of the configuration, from an almost immeasurable impact to a significant deceleration (5x and more). I think that in some normal use the speed of HAProxy with the filter on will be quite satisfactory with a slowdown of less than 4%. The OT filter allows intensive use of ACLs, which can be defined anywhere in the configuration. Thus, it is possible to use the filter only for those connections that are of interest to us. More detailed documentation related to the operation, configuration and use of the filter can be found in the contrib/opentracing directory. To make the OpenTracing filter easier to configure and compile, several entries have been added to the Makefile. When running the make utility, it is possible to use several new arguments: USE_OT=1 : enable the OpenTracing filter OT_DEBUG=1 : compile the OpenTracing filter in debug mode OT_INC=path : force the include path to libopentracing-c-wrapper OT_LIB=path : force the lib path to libopentracing-c-wrapper OT_RUNPATH=1 : add libopentracing-c-wrapper RUNPATH to haproxy executable If USE_OT is set, then an additional Makefile from the contrib/opentracing directory is included in the compilation process.
2020-12-09 15:54:31 +00:00
--- rate-limit 100.0 --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 1.24ms 522.78us 35.59ms 79.12%
Req/Sec 767.71 38.72 3.02k 72.19%
Latency Distribution
50% 1.20ms
75% 1.51ms
90% 1.78ms
99% 2.37ms
1834067 requests in 5.00m, 486.25MB read
Requests/sec: 6111.57
Transfer/sec: 1.62MB
----------------------------------------------------------------------
--- rate-limit 50.0 --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 593.11us 476.81us 43.00ms 91.27%
Req/Sec 1.59k 81.15 2.07k 71.14%
Latency Distribution
50% 549.00us
75% 788.00us
90% 1.03ms
99% 1.62ms
3795987 requests in 5.00m, 0.98GB read
Requests/sec: 12650.65
Transfer/sec: 3.35MB
----------------------------------------------------------------------
--- rate-limit 10.0 --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 326.02us 355.00us 29.23ms 98.05%
Req/Sec 2.80k 88.05 3.30k 75.36%
Latency Distribution
50% 277.00us
75% 356.00us
90% 456.00us
99% 0.97ms
6675563 requests in 5.00m, 1.73GB read
Requests/sec: 22249.78
Transfer/sec: 5.90MB
----------------------------------------------------------------------
--- rate-limit 2.5 --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 311.77us 357.45us 24.11ms 98.62%
Req/Sec 2.91k 94.70 3.18k 78.52%
Latency Distribution
50% 268.00us
75% 334.00us
90% 413.00us
99% 0.94ms
6960933 requests in 5.00m, 1.80GB read
Requests/sec: 23201.07
Transfer/sec: 6.15MB
----------------------------------------------------------------------
--- rate-limit 0.0 --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 302.51us 330.50us 25.84ms 98.69%
Req/Sec 2.98k 91.46 3.40k 78.84%
Latency Distribution
50% 263.00us
75% 325.00us
90% 397.00us
99% 812.00us
7112084 requests in 5.00m, 1.84GB read
Requests/sec: 23705.14
Transfer/sec: 6.28MB
----------------------------------------------------------------------
--- rate-limit disabled --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 303.01us 353.98us 28.03ms 98.76%
Req/Sec 2.99k 93.97 3.34k 81.12%
Latency Distribution
50% 262.00us
75% 323.00us
90% 395.00us
99% 838.00us
7133837 requests in 5.00m, 1.85GB read
Requests/sec: 23777.95
Transfer/sec: 6.30MB
----------------------------------------------------------------------
--- rate-limit off --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 302.61us 349.74us 25.48ms 98.75%
Req/Sec 2.99k 94.85 3.49k 80.75%
Latency Distribution
50% 262.00us
75% 323.00us
90% 395.00us
99% 822.00us
7132714 requests in 5.00m, 1.85GB read
Requests/sec: 23773.35
Transfer/sec: 6.30MB
----------------------------------------------------------------------