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nghttp2-1.38.0-1.2.mga7.armv7hl.rpm



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  <div class="section" id="h2load-1">
<h1>h2load(1)<a class="headerlink" href="#h2load-1" title="Permalink to this headline">¶</a></h1>
<div class="section" id="synopsis">
<h2>SYNOPSIS<a class="headerlink" href="#synopsis" title="Permalink to this headline">¶</a></h2>
<p><strong>h2load</strong> [OPTIONS]… [URI]…</p>
</div>
<div class="section" id="description">
<h2>DESCRIPTION<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
<p>benchmarking tool for HTTP/2 server</p>
<dl class="describe">
<dt>
<code class="descname">&lt;URI&gt;</code></dt>
<dd><p>Specify URI to access.   Multiple URIs can be specified.
URIs are used  in this order for each  client.  All URIs
are used, then  first URI is used and then  2nd URI, and
so  on.  The  scheme, host  and port  in the  subsequent
URIs, if present,  are ignored.  Those in  the first URI
are used solely.  Definition of a base URI overrides all
scheme, host or port values.</p>
</dd></dl>

</div>
<div class="section" id="options">
<h2>OPTIONS<a class="headerlink" href="#options" title="Permalink to this headline">¶</a></h2>
<dl class="option">
<dt id="cmdoption-h2load-n">
<code class="descname">-n</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--requests</code><code class="descclassname">=&lt;N&gt;</code><a class="headerlink" href="#cmdoption-h2load-n" title="Permalink to this definition">¶</a></dt>
<dd><p>Number of  requests across all  clients.  If it  is used
with <a class="reference internal" href="#cmdoption-h2load-timing-script-file"><code class="xref std std-option docutils literal notranslate"><span class="pre">--timing-script-file</span></code></a> option,  this option specifies
the number of requests  each client performs rather than
the number of requests  across all clients.  This option
is ignored if timing-based  benchmarking is enabled (see
<a class="reference internal" href="#cmdoption-h2load-duration"><code class="xref std std-option docutils literal notranslate"><span class="pre">--duration</span></code></a> option).</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">1</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-c">
<code class="descname">-c</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--clients</code><code class="descclassname">=&lt;N&gt;</code><a class="headerlink" href="#cmdoption-h2load-c" title="Permalink to this definition">¶</a></dt>
<dd><p>Number  of concurrent  clients.   With  <a class="reference internal" href="#cmdoption-h2load-r"><code class="xref std std-option docutils literal notranslate"><span class="pre">-r</span></code></a> option,  this
specifies the maximum number of connections to be made.</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">1</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-t">
<code class="descname">-t</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--threads</code><code class="descclassname">=&lt;N&gt;</code><a class="headerlink" href="#cmdoption-h2load-t" title="Permalink to this definition">¶</a></dt>
<dd><p>Number of native threads.</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">1</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-i">
<code class="descname">-i</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--input-file</code><code class="descclassname">=&lt;PATH&gt;</code><a class="headerlink" href="#cmdoption-h2load-i" title="Permalink to this definition">¶</a></dt>
<dd><p>Path of a file with multiple URIs are separated by EOLs.
This option will disable URIs getting from command-line.
If ‘-‘ is given as &lt;PATH&gt;, URIs will be read from stdin.
URIs are used  in this order for each  client.  All URIs
are used, then  first URI is used and then  2nd URI, and
so  on.  The  scheme, host  and port  in the  subsequent
URIs, if present,  are ignored.  Those in  the first URI
are used solely.  Definition of a base URI overrides all
scheme, host or port values.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-m">
<code class="descname">-m</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--max-concurrent-streams</code><code class="descclassname">=&lt;N&gt;</code><a class="headerlink" href="#cmdoption-h2load-m" title="Permalink to this definition">¶</a></dt>
<dd><p>Max  concurrent  streams  to issue  per  session.   When
http/1.1  is used,  this  specifies the  number of  HTTP
pipelining requests in-flight.</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">1</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-w">
<code class="descname">-w</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--window-bits</code><code class="descclassname">=&lt;N&gt;</code><a class="headerlink" href="#cmdoption-h2load-w" title="Permalink to this definition">¶</a></dt>
<dd><p>Sets the stream level initial window size to (2**&lt;N&gt;)-1.</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">30</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-connection-window-bits">
<code class="descname">-W</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--connection-window-bits</code><code class="descclassname">=&lt;N&gt;</code><a class="headerlink" href="#cmdoption-h2load-connection-window-bits" title="Permalink to this definition">¶</a></dt>
<dd><p>Sets  the  connection  level   initial  window  size  to
(2**&lt;N&gt;)-1.</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">30</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-h">
<code class="descname">-H</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--header</code><code class="descclassname">=&lt;HEADER&gt;</code><a class="headerlink" href="#cmdoption-h2load-h" title="Permalink to this definition">¶</a></dt>
<dd><p>Add/Override a header to the requests.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-ciphers">
<code class="descname">--ciphers</code><code class="descclassname">=&lt;SUITE&gt;</code><a class="headerlink" href="#cmdoption-h2load-ciphers" title="Permalink to this definition">¶</a></dt>
<dd><p>Set allowed  cipher list.  The  format of the  string is
described in OpenSSL ciphers(1).</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-p">
<code class="descname">-p</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--no-tls-proto</code><code class="descclassname">=&lt;PROTOID&gt;</code><a class="headerlink" href="#cmdoption-h2load-p" title="Permalink to this definition">¶</a></dt>
<dd><p>Specify ALPN identifier of the  protocol to be used when
accessing http URI without SSL/TLS.
Available protocols: h2c and http/1.1</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">h2c</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-d">
<code class="descname">-d</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--data</code><code class="descclassname">=&lt;PATH&gt;</code><a class="headerlink" href="#cmdoption-h2load-d" title="Permalink to this definition">¶</a></dt>
<dd><p>Post FILE to  server.  The request method  is changed to
POST.   For  http/1.1 connection,  if  <a class="reference internal" href="#cmdoption-h2load-d"><code class="xref std std-option docutils literal notranslate"><span class="pre">-d</span></code></a>  is used,  the
maximum number of in-flight pipelined requests is set to
1.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-r">
<code class="descname">-r</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--rate</code><code class="descclassname">=&lt;N&gt;</code><a class="headerlink" href="#cmdoption-h2load-r" title="Permalink to this definition">¶</a></dt>
<dd><p>Specifies  the  fixed  rate  at  which  connections  are
created.   The   rate  must   be  a   positive  integer,
representing the  number of  connections to be  made per
rate period.   The maximum  number of connections  to be
made  is  given  in  <a class="reference internal" href="#cmdoption-h2load-c"><code class="xref std std-option docutils literal notranslate"><span class="pre">-c</span></code></a>   option.   This  rate  will  be
distributed among  threads as  evenly as  possible.  For
example,  with   <a class="reference internal" href="#cmdoption-h2load-t"><code class="xref std std-option docutils literal notranslate"><span class="pre">-t</span></code></a>2  and   <a class="reference internal" href="#cmdoption-h2load-r"><code class="xref std std-option docutils literal notranslate"><span class="pre">-r</span></code></a>4,  each  thread   gets  2
connections per period.  When the rate is 0, the program
will run  as it  normally does, creating  connections at
whatever variable rate it  wants.  The default value for
this option is 0.  <a class="reference internal" href="#cmdoption-h2load-r"><code class="xref std std-option docutils literal notranslate"><span class="pre">-r</span></code></a> and <a class="reference internal" href="#cmdoption-h2load-duration"><code class="xref std std-option docutils literal notranslate"><span class="pre">-D</span></code></a> are mutually exclusive.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-rate-period">
<code class="descname">--rate-period</code><code class="descclassname">=&lt;DURATION&gt;</code><a class="headerlink" href="#cmdoption-h2load-rate-period" title="Permalink to this definition">¶</a></dt>
<dd><p>Specifies the time  period between creating connections.
The period  must be a positive  number, representing the
length of the period in time.  This option is ignored if
the rate option is not used.  The default value for this
option is 1s.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-duration">
<code class="descname">-D</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--duration</code><code class="descclassname">=&lt;N&gt;</code><a class="headerlink" href="#cmdoption-h2load-duration" title="Permalink to this definition">¶</a></dt>
<dd><p>Specifies the main duration for the measurements in case
of timing-based  benchmarking.  <a class="reference internal" href="#cmdoption-h2load-duration"><code class="xref std std-option docutils literal notranslate"><span class="pre">-D</span></code></a>  and <a class="reference internal" href="#cmdoption-h2load-r"><code class="xref std std-option docutils literal notranslate"><span class="pre">-r</span></code></a>  are mutually
exclusive.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-warm-up-time">
<code class="descname">--warm-up-time</code><code class="descclassname">=&lt;DURATION&gt;</code><a class="headerlink" href="#cmdoption-h2load-warm-up-time" title="Permalink to this definition">¶</a></dt>
<dd><p>Specifies the  time  period  before  starting the actual
measurements, in  case  of  timing-based benchmarking.
Needs to provided along with <a class="reference internal" href="#cmdoption-h2load-duration"><code class="xref std std-option docutils literal notranslate"><span class="pre">-D</span></code></a> option.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-connection-active-timeout">
<code class="descname">-T</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--connection-active-timeout</code><code class="descclassname">=&lt;DURATION&gt;</code><a class="headerlink" href="#cmdoption-h2load-connection-active-timeout" title="Permalink to this definition">¶</a></dt>
<dd><p>Specifies  the maximum  time that  h2load is  willing to
keep a  connection open,  regardless of the  activity on
said connection.  &lt;DURATION&gt; must be a positive integer,
specifying the amount of time  to wait.  When no timeout
value is  set (either  active or inactive),  h2load will
keep  a  connection  open indefinitely,  waiting  for  a
response.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-connection-inactivity-timeout">
<code class="descname">-N</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--connection-inactivity-timeout</code><code class="descclassname">=&lt;DURATION&gt;</code><a class="headerlink" href="#cmdoption-h2load-connection-inactivity-timeout" title="Permalink to this definition">¶</a></dt>
<dd><p>Specifies the amount  of time that h2load  is willing to
wait to see activity  on a given connection.  &lt;DURATION&gt;
must  be a  positive integer,  specifying the  amount of
time  to wait.   When no  timeout value  is set  (either
active or inactive), h2load  will keep a connection open
indefinitely, waiting for a response.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-timing-script-file">
<code class="descname">--timing-script-file</code><code class="descclassname">=&lt;PATH&gt;</code><a class="headerlink" href="#cmdoption-h2load-timing-script-file" title="Permalink to this definition">¶</a></dt>
<dd><p>Path of a file containing one or more lines separated by
EOLs.  Each script line is composed of two tab-separated
fields.  The first field represents the time offset from
the start of execution, expressed as a positive value of
milliseconds  with microsecond  resolution.  The  second
field represents the URI.  This option will disable URIs
getting from  command-line.  If ‘-‘ is  given as &lt;PATH&gt;,
script lines will be read  from stdin.  Script lines are
used in order for each client.   If <a class="reference internal" href="#cmdoption-h2load-n"><code class="xref std std-option docutils literal notranslate"><span class="pre">-n</span></code></a> is given, it must
be less  than or  equal to the  number of  script lines,
larger values are clamped to the number of script lines.
If <a class="reference internal" href="#cmdoption-h2load-n"><code class="xref std std-option docutils literal notranslate"><span class="pre">-n</span></code></a> is not given,  the number of requests will default
to the  number of  script lines.   The scheme,  host and
port defined in  the first URI are  used solely.  Values
contained  in  other  URIs,  if  present,  are  ignored.
Definition of a  base URI overrides all  scheme, host or
port values.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-b">
<code class="descname">-B</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--base-uri</code><code class="descclassname">=(&lt;URI&gt;|unix:&lt;PATH&gt;)</code><a class="headerlink" href="#cmdoption-h2load-b" title="Permalink to this definition">¶</a></dt>
<dd><p>Specify URI from which the scheme, host and port will be
used  for  all requests.   The  base  URI overrides  all
values  defined either  at  the command  line or  inside
input files.  If argument  starts with “unix:”, then the
rest  of the  argument will  be treated  as UNIX  domain
socket path.   The connection is made  through that path
instead of TCP.   In this case, scheme  is inferred from
the first  URI appeared  in the  command line  or inside
input files as usual.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-npn-list">
<code class="descname">--npn-list</code><code class="descclassname">=&lt;LIST&gt;</code><a class="headerlink" href="#cmdoption-h2load-npn-list" title="Permalink to this definition">¶</a></dt>
<dd><p>Comma delimited list of  ALPN protocol identifier sorted
in the  order of preference.  That  means most desirable
protocol comes  first.  This  is used  in both  ALPN and
NPN.  The parameter must be  delimited by a single comma
only  and any  white spaces  are  treated as  a part  of
protocol string.</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">h2,h2-16,h2-14,http/1.1</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-h1">
<code class="descname">--h1</code><code class="descclassname"></code><a class="headerlink" href="#cmdoption-h2load-h1" title="Permalink to this definition">¶</a></dt>
<dd><p>Short        hand         for        <a class="reference internal" href="#cmdoption-h2load-npn-list"><code class="xref std std-option docutils literal notranslate"><span class="pre">--npn-list</span></code></a>=http/1.1
<a class="reference internal" href="#cmdoption-h2load-p"><code class="xref std std-option docutils literal notranslate"><span class="pre">--no-tls-proto</span></code></a>=http/1.1,    which   effectively    force
http/1.1 for both http and https URI.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-header-table-size">
<code class="descname">--header-table-size</code><code class="descclassname">=&lt;SIZE&gt;</code><a class="headerlink" href="#cmdoption-h2load-header-table-size" title="Permalink to this definition">¶</a></dt>
<dd><p>Specify decoder header table size.</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">4K</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-encoder-header-table-size">
<code class="descname">--encoder-header-table-size</code><code class="descclassname">=&lt;SIZE&gt;</code><a class="headerlink" href="#cmdoption-h2load-encoder-header-table-size" title="Permalink to this definition">¶</a></dt>
<dd><p>Specify encoder header table size.  The decoder (server)
specifies  the maximum  dynamic table  size it  accepts.
Then the negotiated dynamic table size is the minimum of
this option value and the value which server specified.</p>
<p>Default: <code class="docutils literal notranslate"><span class="pre">4K</span></code></p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-log-file">
<code class="descname">--log-file</code><code class="descclassname">=&lt;PATH&gt;</code><a class="headerlink" href="#cmdoption-h2load-log-file" title="Permalink to this definition">¶</a></dt>
<dd><p>Write per-request information to a file as tab-separated
columns: start  time as  microseconds since  epoch; HTTP
status code;  microseconds until end of  response.  More
columns may be added later.  Rows are ordered by end-of-
response  time when  using  one worker  thread, but  may
appear slightly  out of order with  multiple threads due
to buffering.  Status code is -1 for failed streams.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-v">
<code class="descname">-v</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--verbose</code><code class="descclassname"></code><a class="headerlink" href="#cmdoption-h2load-v" title="Permalink to this definition">¶</a></dt>
<dd><p>Output debug information.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-version">
<code class="descname">--version</code><code class="descclassname"></code><a class="headerlink" href="#cmdoption-h2load-version" title="Permalink to this definition">¶</a></dt>
<dd><p>Display version information and exit.</p>
</dd></dl>

<dl class="option">
<dt id="cmdoption-h2load-help">
<code class="descname">-h</code><code class="descclassname"></code><code class="descclassname">, </code><code class="descname">--help</code><code class="descclassname"></code><a class="headerlink" href="#cmdoption-h2load-help" title="Permalink to this definition">¶</a></dt>
<dd><p>Display this help and exit.</p>
</dd></dl>

<p>The &lt;SIZE&gt; argument is an integer and an optional unit (e.g., 10K is
10 * 1024).  Units are K, M and G (powers of 1024).</p>
<p>The &lt;DURATION&gt; argument is an integer and an optional unit (e.g., 1s
is 1 second and 500ms is 500 milliseconds).  Units are h, m, s or ms
(hours, minutes, seconds and milliseconds, respectively).  If a unit
is omitted, a second is used as unit.</p>
</div>
<div class="section" id="output">
<span id="h2load-1-output"></span><h2>OUTPUT<a class="headerlink" href="#output" title="Permalink to this headline">¶</a></h2>
<dl class="docutils">
<dt>requests</dt>
<dd><dl class="first last docutils">
<dt>total</dt>
<dd>The number of requests h2load was instructed to make.</dd>
<dt>started</dt>
<dd>The number of requests h2load has started.</dd>
<dt>done</dt>
<dd>The number of requests completed.</dd>
<dt>succeeded</dt>
<dd>The number of requests completed successfully.  Only HTTP status
code 2xx or3xx are considered as success.</dd>
<dt>failed</dt>
<dd>The number of requests failed, including HTTP level failures
(non-successful HTTP status code).</dd>
<dt>errored</dt>
<dd>The number of requests failed, except for HTTP level failures.
This is the subset of the number reported in <code class="docutils literal notranslate"><span class="pre">failed</span></code> and most
likely the network level failures or stream was reset by
RST_STREAM.</dd>
<dt>timeout</dt>
<dd>The number of requests whose connection timed out before they were
completed.   This  is  the  subset   of  the  number  reported  in
<code class="docutils literal notranslate"><span class="pre">errored</span></code>.</dd>
</dl>
</dd>
<dt>status codes</dt>
<dd>The number of status code h2load received.</dd>
<dt>traffic</dt>
<dd><dl class="first last docutils">
<dt>total</dt>
<dd>The number of bytes received from the server “on the wire”.  If
requests were made via TLS, this value is the number of decrypted
bytes.</dd>
<dt>headers</dt>
<dd>The  number  of response  header  bytes  from the  server  without
decompression.  The  <code class="docutils literal notranslate"><span class="pre">space</span> <span class="pre">savings</span></code> shows efficiency  of header
compression.  Let <code class="docutils literal notranslate"><span class="pre">decompressed(headers)</span></code> to the number of bytes
used for header fields after decompression.  The <code class="docutils literal notranslate"><span class="pre">space</span> <span class="pre">savings</span></code>
is calculated  by (1 - <code class="docutils literal notranslate"><span class="pre">headers</span></code>  / <code class="docutils literal notranslate"><span class="pre">decompressed(headers)</span></code>) *
100.  For HTTP/1.1, this is usually  0.00%, since it does not have
header compression.  For HTTP/2, it shows some insightful numbers.</dd>
<dt>data</dt>
<dd>The number of response body bytes received from the server.</dd>
</dl>
</dd>
<dt>time for request</dt>
<dd><dl class="first last docutils">
<dt>min</dt>
<dd>The minimum time taken for request and response.</dd>
<dt>max</dt>
<dd>The maximum time taken for request and response.</dd>
<dt>mean</dt>
<dd>The mean time taken for request and response.</dd>
<dt>sd</dt>
<dd>The standard deviation of the time taken for request and response.</dd>
<dt>+/- sd</dt>
<dd>The fraction of the number of requests within standard deviation
range (mean +/- sd) against total number of successful requests.</dd>
</dl>
</dd>
<dt>time for connect</dt>
<dd><dl class="first last docutils">
<dt>min</dt>
<dd>The minimum time taken to connect to a server including TLS
handshake.</dd>
<dt>max</dt>
<dd>The maximum time taken to connect to a server including TLS
handshake.</dd>
<dt>mean</dt>
<dd>The mean time taken to connect to a server including TLS
handshake.</dd>
<dt>sd</dt>
<dd>The standard deviation of the time taken to connect to a server.</dd>
<dt>+/- sd</dt>
<dd>The  fraction  of  the   number  of  connections  within  standard
deviation range (mean  +/- sd) against total  number of successful
connections.</dd>
</dl>
</dd>
<dt>time for 1st byte (of (decrypted in case of TLS) application data)</dt>
<dd><dl class="first last docutils">
<dt>min</dt>
<dd>The minimum time taken to get 1st byte from a server.</dd>
<dt>max</dt>
<dd>The maximum time taken to get 1st byte from a server.</dd>
<dt>mean</dt>
<dd>The mean time taken to get 1st byte from a server.</dd>
<dt>sd</dt>
<dd>The standard deviation of the time taken to get 1st byte from a
server.</dd>
<dt>+/- sd</dt>
<dd>The fraction of the number of connections within standard
deviation range (mean +/- sd) against total number of successful
connections.</dd>
</dl>
</dd>
<dt>req/s</dt>
<dd><dl class="first last docutils">
<dt>min</dt>
<dd>The minimum request per second among all clients.</dd>
<dt>max</dt>
<dd>The maximum request per second among all clients.</dd>
<dt>mean</dt>
<dd>The mean request per second among all clients.</dd>
<dt>sd</dt>
<dd>The standard deviation of request per second among all clients.
server.</dd>
<dt>+/- sd</dt>
<dd>The fraction of the number of connections within standard
deviation range (mean +/- sd) against total number of successful
connections.</dd>
</dl>
</dd>
</dl>
</div>
<div class="section" id="flow-control">
<h2>FLOW CONTROL<a class="headerlink" href="#flow-control" title="Permalink to this headline">¶</a></h2>
<p>h2load sets large flow control window by default, and effectively
disables flow control to avoid under utilization of server
performance.  To set smaller flow control window, use <a class="reference internal" href="#cmdoption-h2load-w"><code class="xref std std-option docutils literal notranslate"><span class="pre">-w</span></code></a> and
<a class="reference internal" href="#cmdoption-h2load-connection-window-bits"><code class="xref std std-option docutils literal notranslate"><span class="pre">-W</span></code></a> options.  For example, use <code class="docutils literal notranslate"><span class="pre">-w16</span> <span class="pre">-W16</span></code> to set default
window size described in HTTP/2 protocol specification.</p>
</div>
<div class="section" id="see-also">
<h2>SEE ALSO<a class="headerlink" href="#see-also" title="Permalink to this headline">¶</a></h2>
<p><em class="manpage">nghttp(1)</em>, <em class="manpage">nghttpd(1)</em>, <em class="manpage">nghttpx(1)</em></p>
</div>
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