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* [PATCH 0/3] slow clients and test/benchmark tools
@ 2019-05-12 22:25 Eric Wong
  2019-05-12 22:25 ` [PATCH 2/3] test/benchmark/readinput: demo for slowly uploading clients Eric Wong
  0 siblings, 1 reply; 2+ results
From: Eric Wong @ 2019-05-12 22:25 UTC (permalink / raw)
  To: unicorn-public

Slowloris made waves nearly a decade ago, and there are still
people being misled into using the wrong reverse proxy for
unicorn.  Maybe these new standalone Rack apps can convince
folks to deploy unicorn correctly behind nginx, or better,
evaluate alternatives to nginx :>

Thus ddstream and readinput can help users evaluate
fully-buffering reverse proxies such as nginx, or similar :>

Finally, uconnect is intended to evaluate removal of the kgio
dependency (and maybe future speedups)

  test/benchmark/ddstream: demo for slowly reading clients
  test/benchmark/readinput: demo for slowly uploading clients
  test/benchmark/uconnect: test for accept loop speed

 test/benchmark/README        | 18 +++++++---
 test/benchmark/ddstream.ru   | 50 +++++++++++++++++++++++++++
 test/benchmark/readinput.ru  | 40 ++++++++++++++++++++++
 test/benchmark/uconnect.perl | 66 ++++++++++++++++++++++++++++++++++++
 4 files changed, 170 insertions(+), 4 deletions(-)
 create mode 100644 test/benchmark/ddstream.ru
 create mode 100644 test/benchmark/readinput.ru
 create mode 100755 test/benchmark/uconnect.perl

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atvak ercynprzrag...

^ permalink raw reply	[relevance 7%]

* [PATCH 2/3] test/benchmark/readinput: demo for slowly uploading clients
  2019-05-12 22:25 [PATCH 0/3] slow clients and test/benchmark tools Eric Wong
@ 2019-05-12 22:25 ` Eric Wong
  0 siblings, 0 replies; 2+ results
From: Eric Wong @ 2019-05-12 22:25 UTC (permalink / raw)
  To: unicorn-public

This is intended to demonstrate how badly we suck at dealing
with slow clients making uploads.  It can help users evaluate
alternative fully-buffering reverse proxies, because nginx
should not be the only option.
---
 test/benchmark/README       |  5 +++++
 test/benchmark/readinput.ru | 40 +++++++++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+)
 create mode 100644 test/benchmark/readinput.ru

diff --git a/test/benchmark/README b/test/benchmark/README
index e9b7a41..cd929f3 100644
--- a/test/benchmark/README
+++ b/test/benchmark/README
@@ -47,6 +47,11 @@ is NOT our problem.  That is the job of nginx (or similar).
 Standalone Rack app intended to show how BAD we are at slow clients.
 See usage in comments.
 
+== readinput.ru
+
+Standalone Rack app intended to show how bad we are with slow uploaders.
+See usage in comments.
+
 == Contributors
 
 This directory is intended to remain stable.  Do not make changes
diff --git a/test/benchmark/readinput.ru b/test/benchmark/readinput.ru
new file mode 100644
index 0000000..c91bec3
--- /dev/null
+++ b/test/benchmark/readinput.ru
@@ -0,0 +1,40 @@
+# This app is intended to test large HTTP requests with or without
+# a fully-buffering reverse proxy such as nginx. Without a fully-buffering
+# reverse proxy, unicorn will be unresponsive when client count exceeds
+# worker_processes.
+
+DOC = <<DOC
+To demonstrate how bad unicorn is at slowly uploading clients:
+
+  # in one terminal, start unicorn with one worker:
+  unicorn -E none -l 127.0.0.1:8080 test/benchmark/readinput.ru
+
+  # in a different terminal, upload 45M from multiple curl processes:
+  dd if=/dev/zero bs=45M count=1 | curl -T- -HExpect: --limit-rate 1M \
+     --trace-time -v http://127.0.0.1:8080/ &
+  dd if=/dev/zero bs=45M count=1 | curl -T- -HExpect: --limit-rate 1M \
+     --trace-time -v http://127.0.0.1:8080/ &
+  wait
+
+# The last client won't see a response until the first one is done uploading
+# You also won't be able to make GET requests to view this documentation
+# while clients are uploading.  You can also view the stderr debug output
+# of unicorn (see logging code in #{__FILE__}).
+DOC
+
+run(lambda do |env|
+  input = env['rack.input']
+  buf = ''.b
+
+  # default logger contains timestamps, rely on that so users can
+  # see what the server is doing
+  l = env['rack.logger']
+
+  l.debug('BEGIN reading input ...') if l
+  :nop while input.read(16384, buf)
+  l.debug('DONE reading input ...') if l
+
+  buf.clear
+  [ 200, [ %W(Content-Length #{DOC.size}), %w(Content-Type text/plain) ],
+    [ DOC ] ]
+end)
-- 
EW


^ permalink raw reply	[relevance 5%]

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2019-05-12 22:25 [PATCH 0/3] slow clients and test/benchmark tools Eric Wong
2019-05-12 22:25 ` [PATCH 2/3] test/benchmark/readinput: demo for slowly uploading clients Eric Wong


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