1d977cc6aa
* Added source and generated html of manual, and API doc * setup.py can install the manual (and by extension do can debuild) * setup.py has (inactive) code for generating the html from the source but this will break if rtd theme is not available * A few changes to doc strings to make the autodoc prettier * Added help shortcut, by default F1 to open the local manual * Added button to About tab to launch manual * A couple of additional string to translate related to manual/help
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<li class="toctree-l2"><a class="reference internal" href="#why">Why...</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="#write-in-python-it-s-slow-bloated-bad">...write in Python? It’s slow/bloated/bad?</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="#performance">Performance</a></li>
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<li class="toctree-l4"><a class="reference internal" href="#memory-use-the-dumb-way">Memory use - The dumb way</a></li>
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<li class="toctree-l4"><a class="reference internal" href="#memory-use-the-sensible-way">Memory use - The sensible way</a></li>
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<li class="toctree-l4"><a class="reference internal" href="#python-sucks">“Python sucks!”</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#how-do-i">How do I...</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="#make-terminator-work-like-quake-style-terminals">...make Terminator work like Quake style terminals?</a></li>
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<li class="toctree-l2"><a class="reference internal" href="gettinginvolved.html#api-docs">API Docs</a></li>
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<img alt="Because curious cats ask clever code monkeys." class="align-right" src="_images/icon_faq.png" />
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<div class="section" id="frequently-asked-questions">
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<h1>Frequently Asked Questions<a class="headerlink" href="#frequently-asked-questions" title="Permalink to this headline">¶</a></h1>
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<p>Here I’ll try to list some common questions that get asked for.</p>
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<div class="section" id="why">
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<h2>Why...<a class="headerlink" href="#why" title="Permalink to this headline">¶</a></h2>
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||
<div class="section" id="write-in-python-it-s-slow-bloated-bad">
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||
<h3>...write in Python? It’s slow/bloated/bad?<a class="headerlink" href="#write-in-python-it-s-slow-bloated-bad" title="Permalink to this headline">¶</a></h3>
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<div class="section" id="performance">
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<h4>Performance<a class="headerlink" href="#performance" title="Permalink to this headline">¶</a></h4>
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<dl class="docutils">
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||
<dt>Profiles were configured with command <code class="docutils literal"><span class="pre">bash</span> <span class="pre">-c</span> <span class="pre">exit</span></code>, and the</dt>
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<dd>commands run a couple of times to get the caches loaded up.</dd>
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</dl>
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<p>GNOME-Terminal:</p>
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<div class="highlight-python"><div class="highlight"><pre>time for i in {1..30} ; do gnome-terminal --profile=Quickexit; done
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real 0m10.606s
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</pre></div>
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</div>
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<p>Terminator:</p>
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<div class="highlight-python"><div class="highlight"><pre>time for i in {1..30} ; do terminator -g deletemeconfig -p Quickexit; done
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GTK2: real 0m11.928s A smidgen slower.
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GTK3: real 0m10.885s Yeah, basically identical!
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</pre></div>
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</div>
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<p>Cold start, using <code class="docutils literal"><span class="pre">sync</span> <span class="pre">&&</span> <span class="pre">echo</span> <span class="pre">3</span> <span class="pre">></span> <span class="pre">/proc/sys/vm/drop_caches</span></code> before
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each run, then launching a single timed instance.</p>
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<p>Gnome-Terminal:</p>
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<div class="highlight-python"><div class="highlight"><pre>time gnome-terminal --profile=Quickexit
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real 0m7.628s (approx median, there was a strange variance for GT, between 5 and 9 secs)
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</pre></div>
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</div>
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<p>Terminator:</p>
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<div class="highlight-python"><div class="highlight"><pre>time terminator -g deletemeconfig -p Quickexit
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GTK2: real 0m11.390s (median of 3x)
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GTK3: real 0m11.264s (median of 3x)
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</pre></div>
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</div>
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<p>OK, so this is the once place you would notice an appreciable
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difference. How often do you start these things with completely empty
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caches/buffers?</p>
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<p>In GTK2 there is a known issue which slows the cat’ing of large files
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quite a bit. The VTE in GTK3 Terminator is the <em>exact</em> same widget
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GNOME-Terminal uses, so this will get better, as and when we move
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fully to the in-progress GTK3 port. I should point out that this
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performance deficit is not due to the Python interpreter, or the
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Terminator Python code, but is solely down to the compiled C code VTE
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widget.</p>
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</div>
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<div class="section" id="memory-use-the-dumb-way">
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<h4>Memory use - The dumb way<a class="headerlink" href="#memory-use-the-dumb-way" title="Permalink to this headline">¶</a></h4>
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<p>GNOME-Terminal:</p>
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<div class="highlight-python"><div class="highlight"><pre> for i in {1..100} ; do gnome-terminal --disable-factory & done
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root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free # Before startup
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total used free shared buffers cached
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Mem: 3102404 1388776 1713628 4052 164 45340
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-/+ buffers/cache: 1343272 1759132
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Swap: 3121996 788704 2333292
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root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free # After startup
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total used free shared buffers cached
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Mem: 3102404 2439524 662880 57196 1240 99212
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-/+ buffers/cache: 2339072 763332
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||
Swap: 3121996 751440 2370556
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free # After kill
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1466536 1635868 4796 160 45912
|
||
-/+ buffers/cache: 1420464 1681940
|
||
Swap: 3121996 751020 2370976
|
||
|
||
Used (used mem -buffers/cache + swap)
|
||
Before start: 2131976
|
||
After start : 3090512 = 958536 kbytes, 936 Mbytes / 9.36 MBytes/instance
|
||
After kill : 2171484 = 39508 kbytes, 38 Mbytes not recovered
|
||
</pre></div>
|
||
</div>
|
||
<p>Terminator GTK2:</p>
|
||
<div class="highlight-python"><div class="highlight"><pre>for i in {1..100} ; do terminator -g deletemeconfig -u & done
|
||
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1313456 1788948 4284 152 43844
|
||
-/+ buffers/cache: 1269460 1832944
|
||
Swap: 3121996 736844 2385152
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free
|
||
total used free shared buffers cached
|
||
Mem: 3102404 2866552 235852 19484 1084 65408
|
||
-/+ buffers/cache: 2800060 302344
|
||
Swap: 3121996 736340 2385656
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1317724 1784680 4284 152 43464
|
||
-/+ buffers/cache: 1274108 1828296
|
||
Swap: 3121996 736304 2385692
|
||
|
||
Used (used mem -buffers/cache + swap)
|
||
before start: 2006304
|
||
after start : 3536400 = 1530096 kbytes, 1494 Mbytes / 14.94 MBytes/instance
|
||
after kill : 2010412 = 4108 kbytes, 4 Mbytes not recovered
|
||
</pre></div>
|
||
</div>
|
||
<p>Terminator GTK3:</p>
|
||
<div class="highlight-python"><div class="highlight"><pre>for i in {1..100} ; do terminator -g deletemeconfig -u & done
|
||
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1467204 1635200 4816 120 46132
|
||
-/+ buffers/cache: 1420952 1681452
|
||
Swap: 3121996 751000 2370996
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free
|
||
total used free shared buffers cached
|
||
Mem: 3102404 2848372 254032 7216 960 52652
|
||
-/+ buffers/cache: 2794760 307644
|
||
Swap: 3121996 750016 2371980
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1483388 1619016 4820 148 46084
|
||
-/+ buffers/cache: 1437156 1665248
|
||
Swap: 3121996 749828 2372168
|
||
|
||
Used (used mem -buffers/cache + swap)
|
||
before start: 2171952
|
||
after start : 3544776 = 1372824 kbytes, 1340 Mbytes / 13.41 MBytes/instance
|
||
after kill : 2186984 = 15032 kbytes, 15 Mbytes not recovered
|
||
</pre></div>
|
||
</div>
|
||
<p>OK, so yes, there is more overhead. We did just start 100 Python
|
||
interpreters! As titled, this is dumb, and even if you use this dumb
|
||
method, are you really going to have a hundred of them?...</p>
|
||
</div>
|
||
<div class="section" id="memory-use-the-sensible-way">
|
||
<h4>Memory use - The sensible way<a class="headerlink" href="#memory-use-the-sensible-way" title="Permalink to this headline">¶</a></h4>
|
||
<p>GNOME-Terminal:</p>
|
||
<div class="highlight-python"><div class="highlight"><pre>gnome-terminal &
|
||
for i in {1..100} ; do gnome-terminal & done
|
||
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free # Before 100
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1490996 1611408 5344 172 47580
|
||
-/+ buffers/cache: 1443244 1659160
|
||
Swap: 3121996 749776 2372220
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free # After 100
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1878228 1224176 5344 172 47388
|
||
-/+ buffers/cache: 1830668 1271736
|
||
Swap: 3121996 733396 2388600
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free # After kill
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1491888 1610516 4840 272 46088
|
||
-/+ buffers/cache: 1445528 1656876
|
||
Swap: 3121996 733240 2388756
|
||
|
||
Used (used mem -buffers/cache + swap)
|
||
Before start: 2193020
|
||
After start : 2564064 = 371044 kbytes, 362 Mbytes / 3.59 MBytes/instance
|
||
After kill : 2178768 = −14252 kbytes, -13.92 Mbytes recovered (first process)
|
||
</pre></div>
|
||
</div>
|
||
<p>Terminator GTK2:</p>
|
||
<div class="highlight-python"><div class="highlight"><pre>terminator -g deletemeconfig &
|
||
for i in {1..100} ; do terminator -g deletemeconfig -u & done
|
||
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1324492 1777912 4388 152 49688
|
||
-/+ buffers/cache: 1274652 1827752
|
||
Swap: 3121996 744528 2377468
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1652112 1450292 4756 860 49968
|
||
-/+ buffers/cache: 1601284 1501120
|
||
Swap: 3121996 744224 2377772
|
||
root@pinpoint:~# sync && echo 3 > /proc/sys/vm/drop_caches && free
|
||
total used free shared buffers cached
|
||
Mem: 3102404 1305376 1797028 4236 124 42836
|
||
-/+ buffers/cache: 1262416 1839988
|
||
Swap: 3121996 744116 2377880
|
||
|
||
Used (used mem -buffers/cache + swap)
|
||
before start: 2019180
|
||
after start : 2345508 = 326328 kbytes, 319 Mbytes / 3.16 MBytes/instance
|
||
after kill : 2006532 = −12648 kbytes, -12.35 Mbytes recovered (first process)
|
||
</pre></div>
|
||
</div>
|
||
<p>Terminator GTK3:</p>
|
||
<div class="highlight-python"><div class="highlight"><pre>Not possible at the moment because the DBus interface still needs fixing.
|
||
</pre></div>
|
||
</div>
|
||
<p>So that one surprised me a bit. The fact that when using the single
|
||
process we are <strong>more</strong> memory efficient. Python + 100 terminals is
|
||
using <90% of the GNOME-Terminal + 100 terminals.</p>
|
||
<p>Some may think that this is something to do with the different version
|
||
of the VTE widget, but hang on a second. In the dumb method GTK2
|
||
Terminator used <strong>more</strong> memory than GTK3. Once the DBus is fixed for
|
||
GTK3 there could potentially be more savings.</p>
|
||
</div>
|
||
<div class="section" id="python-sucks">
|
||
<h4>“Python sucks!”<a class="headerlink" href="#python-sucks" title="Permalink to this headline">¶</a></h4>
|
||
<p>Yeah, whatever. The fact is that I’m a helluva lot more productive in
|
||
Python than I ever was, am, or will be, in C. In my totally biased
|
||
and uninformed opinion, I also think certain things are <em>much</em> easier
|
||
to get working in Python because you can iterate faster. With the
|
||
:ref:<code class="docutils literal"><span class="pre">debugging</span></code> option to run an interactive terminal you even
|
||
have the ability to try out ideas and explore the running instance
|
||
directly. Results don’t get more immediate than that!</p>
|
||
</div>
|
||
<div class="section" id="in-summary">
|
||
<h4>In summary<a class="headerlink" href="#in-summary" title="Permalink to this headline">¶</a></h4>
|
||
<p>It’s a bit slower on startup, it takes a bit more memory, but that’s
|
||
when you use the dumb method. In normal use, where you’re likely to
|
||
be using the existing process to open a new window, it is for all
|
||
practical purposes as fast as the compiled GNOME-Terminal. It may
|
||
even (according to the last memory section) be a little lighter
|
||
memory wise, and more obliging about giving it back!</p>
|
||
<p>I didn’t compare to things like xterm, because frankly we’re not
|
||
aimed at the same people. Personally I’d rather have the more
|
||
extensive features saving me <em>lots</em> of time over the course of the
|
||
day when using it, than save a handful of seconds every few days
|
||
when I restart it, or worrying about an extra 5 or 10 MBytes.</p>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="how-do-i">
|
||
<h2>How do I...<a class="headerlink" href="#how-do-i" title="Permalink to this headline">¶</a></h2>
|
||
<div class="section" id="make-terminator-work-like-quake-style-terminals">
|
||
<h3>...make Terminator work like Quake style terminals?<a class="headerlink" href="#make-terminator-work-like-quake-style-terminals" title="Permalink to this headline">¶</a></h3>
|
||
<blockquote>
|
||
<div><p>You can get close, but it isn’t a perfect recreation, as Terminator
|
||
was not designed with this in mind, but improvements are always welcome!</p>
|
||
<ul class="simple">
|
||
<li>Window state: Hidden</li>
|
||
<li>Always on top: On</li>
|
||
<li>Show on all workspaces: On</li>
|
||
<li>Hide on lose focus: On</li>
|
||
<li>Hide from taskbar</li>
|
||
<li>Window borders: Off (use <code class="docutils literal"><span class="pre">Alt</span></code>+<code class="docutils literal"><span class="pre">click-drag</span></code> and
|
||
<code class="docutils literal"><span class="pre">Alt</span></code>+<code class="docutils literal"><span class="pre">right-click-drag</span></code> to position and size window.)</li>
|
||
<li>Set the Toggle window visibility shortcut to your preference</li>
|
||
</ul>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p class="last">It must be the first Terminator instance started, because
|
||
at present only the first instance can bind to the Window
|
||
toggle.</p>
|
||
</div>
|
||
<p>This will give you a terminal hidden at startup that appears with a
|
||
keypress and disappears, either with another keypress, or losing focus.
|
||
It will stay on top, and appear on whichever workspace you are on.</p>
|
||
<p>Something that we don’t have is the slide in action of a true Quake
|
||
style terminal. The terminal will simply flick into view, and flick
|
||
out of view.</p>
|
||
<div class="admonition warning">
|
||
<p class="first admonition-title">Warning</p>
|
||
<p class="last">The Hide on lose focus option is problematic at this
|
||
time. You will probably find it very frustrating.</p>
|
||
</div>
|
||
</div></blockquote>
|
||
</div>
|
||
</div>
|
||
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|
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|
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|
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|
||
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|
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