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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 650.95us 431.15us 46.44ms 96.67%
Req/Sec 1.44k 51.39 2.57k 74.89%
Latency Distribution
50% 608.00us
75% 760.00us
90% 0.91ms
99% 1.31ms
3434836 requests in 5.00m, 0.89GB read
Requests/sec: 11446.99
Transfer/sec: 3.03MB
----------------------------------------------------------------------
--- rate-limit 50.0 --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 398.00us 371.39us 22.56ms 97.23%
Req/Sec 2.32k 84.01 2.76k 74.84%
Latency Distribution
50% 350.00us
75% 467.00us
90% 593.00us
99% 1.03ms
5530848 requests in 5.00m, 1.43GB read
Requests/sec: 18434.31
Transfer/sec: 4.89MB
----------------------------------------------------------------------
--- rate-limit 10.0 --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 316.75us 351.92us 23.00ms 98.57%
Req/Sec 2.87k 94.02 3.22k 79.30%
Latency Distribution
50% 273.00us
75% 342.00us
90% 424.00us
99% 0.94ms
6859293 requests in 5.00m, 1.78GB read
Requests/sec: 22862.16
Transfer/sec: 6.06MB
----------------------------------------------------------------------
--- rate-limit 2.5 --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 307.90us 368.64us 26.08ms 98.71%
Req/Sec 2.96k 103.84 3.23k 83.76%
Latency Distribution
50% 264.00us
75% 327.00us
90% 402.00us
99% 0.97ms
7065667 requests in 5.00m, 1.83GB read
Requests/sec: 23550.37
Transfer/sec: 6.24MB
----------------------------------------------------------------------
--- rate-limit 0.0 --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 304.60us 376.36us 30.26ms 98.74%
Req/Sec 2.99k 106.93 3.24k 83.08%
Latency Distribution
50% 262.00us
75% 323.00us
90% 396.00us
99% 0.95ms
7136261 requests in 5.00m, 1.85GB read
Requests/sec: 23785.77
Transfer/sec: 6.31MB
----------------------------------------------------------------------
--- rate-limit disabled --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 300.90us 342.35us 22.13ms 98.74%
Req/Sec 3.00k 95.67 3.33k 81.11%
Latency Distribution
50% 261.00us
75% 322.00us
90% 394.00us
99% 806.00us
7159525 requests in 5.00m, 1.85GB read
Requests/sec: 23863.05
Transfer/sec: 6.33MB
----------------------------------------------------------------------
--- rate-limit off --------------------------------------------------
Running 5m test @ http://localhost:10080/index.html
8 threads and 8 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 302.51us 371.99us 30.26ms 98.77%
Req/Sec 3.00k 104.43 3.73k 83.74%
Latency Distribution
50% 260.00us
75% 321.00us
90% 394.00us
99% 0.89ms
7170345 requests in 5.00m, 1.86GB read
Requests/sec: 23898.19
Transfer/sec: 6.34MB
----------------------------------------------------------------------