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vegeta-load-test.md

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node server load tested with vegeta : 1500r/sec load

2 sample tests

➜  Downloads  echo "GET http://localhost:3000/" | vegeta attack -duration=30s -connections=400 -rate=1500 | tee results.bin | vegeta report

Requests      [total, rate]            45000, 1500.03
Duration      [total, attack, wait]    31.482862061s, 29.999303235s, 1.483558826s
Latencies     [mean, 50, 95, 99, max]  1.209747877s, 15.377214ms, 3.332388444s, 4.167672093s, 7.716878579s
Bytes In      [total, mean]            276744, 6.15
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  47.31%
Status Codes  [code:count]             200:21288  0:23712


Requests      [total, rate]            45000, 1500.03
Duration      [total, attack, wait]    31.569965911s, 29.999303262s, 1.570662649s
Latencies     [mean, 50, 95, 99, max]  1.196673515s, 873.232485ms, 3.409811142s, 4.008301372s, 4.933461642s
Bytes In      [total, mean]            296777, 6.60
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  50.73%
Status Codes  [code:count]             200:22829  0:22171
Error Set:

pm2 clustered node server load tested with vegeta : 1500r/s load

➜  Downloads  echo "GET http://localhost:3000/" | vegeta attack -duration=30s -connections=400 -rate=1500 | tee results.bin | vegeta report

Requests      [total, rate]            45000, 1500.03
Duration      [total, attack, wait]    30.007304814s, 29.999303115s, 8.001699ms
Latencies     [mean, 50, 95, 99, max]  343.314164ms, 193.778434ms, 1.231073328s, 3.428470598s, 5.438008221s
Bytes In      [total, mean]            560391, 12.45
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  95.79%
Status Codes  [code:count]             200:43107  0:1893
Error Set:

Requests      [total, rate]            45000, 1500.03
Duration      [total, attack, wait]    36.446199795s, 29.999303206s, 6.446896589s
Latencies     [mean, 50, 95, 99, max]  735.524662ms, 442.744897ms, 2.589485755s, 6.984564066s, 10.410978951s
Bytes In      [total, mean]            546338, 12.14
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  93.39%
Status Codes  [code:count]             200:42026  0:2974

results under high load

The errors are all Too many files open

Error rate is drastically low with pm2, however with increased latency.

normal node server load tested with vegeta : 500r/s load

➜  Downloads  echo "GET http://localhost:3000/" | vegeta attack -duration=30s -connections=400 -rate=500 | tee results.bin | vegeta report

Requests      [total, rate]            15000, 500.03
Duration      [total, attack, wait]    29.999392066s, 29.997999903s, 1.392163ms
Latencies     [mean, 50, 95, 99, max]  2.945624ms, 1.49045ms, 8.108307ms, 46.927358ms, 89.685651ms
Bytes In      [total, mean]            195000, 13.00
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  100.00%
Status Codes  [code:count]             200:15000
Error Set:

Requests      [total, rate]            15000, 500.03
Duration      [total, attack, wait]    29.999699468s, 29.997999892s, 1.699576ms
Latencies     [mean, 50, 95, 99, max]  4.336593ms, 1.503003ms, 11.191971ms, 99.141573ms, 208.070885ms
Bytes In      [total, mean]            195000, 13.00
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  100.00%
Status Codes  [code:count]             200:15000
Error Set:

pm2 clustered node server load tested with vegeta : 500r/s load

➜  Downloads  echo "GET http://localhost:3000/" | vegeta attack -duration=30s -connections=400 -rate=500 | tee results.bin | vegeta report

Requests      [total, rate]            15000, 500.03
Duration      [total, attack, wait]    30.003100044s, 29.997999799s, 5.100245ms
Latencies     [mean, 50, 95, 99, max]  1.586005ms, 1.411899ms, 2.062763ms, 4.367381ms, 49.85332ms
Bytes In      [total, mean]            195000, 13.00
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  100.00%
Status Codes  [code:c

Requests      [total, rate]            15000, 500.03
Duration      [total, attack, wait]    29.999575888s, 29.99799988s, 1.576008ms
Latencies     [mean, 50, 95, 99, max]  2.205785ms, 1.5073ms, 5.56287ms, 13.228677ms, 48.67748ms
Bytes In      [total, mean]            195000, 13.00
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  100.00%
Status Codes  [code:count]             200:15000
Error Set:

results under normal load

0% error rate in both cases with negligible reduction in latency with pm2