Influx unit test failure

[rjl493456442]

GOVERSION

go version go1.22.1 darwin/arm64

Description

The unit test TestExampleV1 in influxdb package is failing. The output is:

=== RUN   TestExampleV1
    influxdb_test.go:66: 
        have:
        goth.system/cpu/schedlatency.histogram count=5645i,max=41943040i,mean=1819544.0410983171,min=0i,p25=0,p50=0,p75=7168,p95=16777216,p99=29360128,p999=33554432,p9999=33554432,stddev=6393570.217198882,variance=40877740122252.56 978307200000000000
        goth.system/memory/pauses.histogram count=14i,max=229376i,mean=50066.28571428572,min=5120i,p25=10240,p50=32768,p75=57344,p95=196608,p99=196608,p999=196608,p9999=196608,stddev=54726.062410783874,variance=2994941906.9890113 978307200000000000
        goth.test/counter.count value=12345 978307200000000000
        goth.test/counter_float64.count value=54321.98 978307200000000000
        goth.test/gauge.gauge value=23456i 978307200000000000
        goth.test/gauge_float64.gauge value=34567.89 978307200000000000
        goth.test/gauge_info.gauge value="{\"arch\":\"amd64\",\"commit\":\"7caa2d8163ae3132c1c2d6978c76610caee2d949\",\"os\":\"linux\",\"protocol_versions\":\"64 65 66\",\"version\":\"1.10.18-unstable\"}" 978307200000000000
        goth.test/histogram.histogram count=3i,max=3i,mean=2,min=1i,p25=1,p50=2,p75=3,p95=3,p99=3,p999=3,p9999=3,stddev=0.816496580927726,variance=0.6666666666666666 978307200000000000
        goth.test/meter.meter count=0i,m1=0,m15=0,m5=0,mean=0 978307200000000000
        goth.test/resetting_timer.timer count=6i,max=120000000i,mean=30000000,min=10000000i,p50=12500000,p75=40500000,p95=120000000,p99=120000000,p999=120000000,p9999=120000000 978307200000000000
        goth.test/timer.timer count=6i,m1=0,m15=0,m5=0,max=120000000i,mean=38333333.333333336,meanrate=0,min=20000000i,p50=22500000,p75=48000000,p95=120000000,p99=120000000,p999=120000000,p9999=120000000,stddev=36545253.529775314,variance=1335555555555555.2 978307200000000000
        
        want:
        goth.system/cpu/schedlatency.histogram count=5645i,max=41943040i,mean=1819544.0410983171,min=0i,p25=0,p50=0,p75=7168,p95=16777216,p99=29360128,p999=33554432,p9999=33554432,stddev=6393570.217198883,variance=40877740122252.57 978307200000000000
        goth.system/memory/pauses.histogram count=14i,max=229376i,mean=50066.28571428572,min=5120i,p25=10240,p50=32768,p75=57344,p95=196608,p99=196608,p999=196608,p9999=196608,stddev=54726.062410783874,variance=2994941906.9890113 978307200000000000
        goth.test/counter.count value=12345 978307200000000000
        goth.test/counter_float64.count value=54321.98 978307200000000000
        goth.test/gauge.gauge value=23456i 978307200000000000
        goth.test/gauge_float64.gauge value=34567.89 978307200000000000
        goth.test/gauge_info.gauge value="{\"arch\":\"amd64\",\"commit\":\"7caa2d8163ae3132c1c2d6978c76610caee2d949\",\"os\":\"linux\",\"protocol_versions\":\"64 65 66\",\"version\":\"1.10.18-unstable\"}" 978307200000000000
        goth.test/histogram.histogram count=3i,max=3i,mean=2,min=1i,p25=1,p50=2,p75=3,p95=3,p99=3,p999=3,p9999=3,stddev=0.816496580927726,variance=0.6666666666666666 978307200000000000
        goth.test/meter.meter count=0i,m1=0,m15=0,m5=0,mean=0 978307200000000000
        goth.test/resetting_timer.timer count=6i,max=120000000i,mean=30000000,min=10000000i,p50=12500000,p75=40500000,p95=120000000,p99=120000000,p999=120000000,p9999=120000000 978307200000000000
        goth.test/timer.timer count=6i,m1=0,m15=0,m5=0,max=120000000i,mean=38333333.333333336,meanrate=0,min=20000000i,p50=22500000,p75=48000000,p95=120000000,p99=120000000,p999=120000000,p9999=120000000,stddev=36545253.529775314,variance=1335555555555555.2 978307200000000000
        
    influxdb_test.go:67: have vs want:
        have:0: goth.system/cpu/schedlatency.histogram count=5645i,max=41943040i,mean=1819544.0410983171,min=0i,p25=0,p50=0,p75=7168,p95=16777216,p99=29360128,p999=33554432,p9999=33554432,stddev=6393570.217198882,variance=40877740122252.56 978307200000000000
        want:0: goth.system/cpu/schedlatency.histogram count=5645i,max=41943040i,mean=1819544.0410983171,min=0i,p25=0,p50=0,p75=7168,p95=16777216,p99=29360128,p999=33554432,p9999=33554432,stddev=6393570.217198883,variance=40877740122252.57 978307200000000000
--- FAIL: TestExampleV1 (0.00s)

FAIL

Process finished with the exit code 1

The actual difference is:

stddev=6393570.217198882 vs stddev=6393570.217198883

My hunch is new go has a slightly different float precision.

[jwasinger]

I assume you're running this on mbp/arm? I've encountered it on my m2 mbp and others have also reported it.

I can't recall exactly where (GH issue), but someone claimed it is due to float precision differences with arm.

related: #29047

[rjl493456442]

Yes, it’s mbp/arm Thanks and Best regards Gary rong jwasinger ***@***.***>于2024年3月20日 周三下午1:31写道：

…

I assume you're running this on mbp/arm? I've encountered it on my m2 mbp and others have also reported it. I can't recall exactly where (GH issue), but someone claimed it is due to float precision differences with arm. — Reply to this email directly, view it on GitHub <#29294 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABNO6OKXVZ7DJLZNLXHMQX3YZENJ3AVCNFSM6AAAAABE6WVSPCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDAMBYGY4DINRZGA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[rjl493456442]

It's duplicated with 29047, close it.