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147 <div class="section" id="settings">
148<h1>Settings<a class="headerlink" href="#settings" title="Permalink to this headline">¶</a></h1>
149<p>EventMQ uses a standard INI style config file found at <code class="docutils literal"><span class="pre">/etc/eventmq.conf</span></code>.</p>
150<div class="section" id="router">
151<h2>Router<a class="headerlink" href="#router" title="Permalink to this headline">¶</a></h2>
152</div>
153<div class="section" id="scheduler">
154<h2>Scheduler<a class="headerlink" href="#scheduler" title="Permalink to this headline">¶</a></h2>
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156<div class="section" id="job-manager">
157<h2>Job Manager<a class="headerlink" href="#job-manager" title="Permalink to this headline">¶</a></h2>
158<div class="section" id="concurrent-jobs">
159<h3>concurrent_jobs<a class="headerlink" href="#concurrent-jobs" title="Permalink to this headline">¶</a></h3>
160<p>Default: 4</p>
161<p>This is the number of concurrent jobs the indiviudal job manager should execute
162at a time. If you are using the multiprocess or threading model this number
163becomes important as you will want to control the load on your server. If the
164load equals the number of cores on the server, processes will begin waiting for
165cpu cycles and things will begin to slow down.</p>
166<p>A safe number to choose if your jobs block a lot would be (2 * cores). If your
167jobs are cpu intensive you will want to set this number to the number of cores
168you have or (cores - 1) to leave cycles for the os and other processes. This is
169something that will have to be tuned based on the jobs that are
170running. Grouping similar jobs in named queues will help you tune this number.</p>
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172<div class="section" id="queues">
173<h3>queues<a class="headerlink" href="#queues" title="Permalink to this headline">¶</a></h3>
174<p>Default: (10, default)</p>
175<p>Semi-colon seperated list of queues to process jobs for with thier
176weights. Example: <code class="docutils literal"><span class="pre">queues=(10,</span> <span class="pre">data_process);</span> <span class="pre">(15,</span> <span class="pre">email)</span></code>. With these
177weights and the <code class="docutils literal"><span class="pre">CONCURRENT_JOBS</span></code> setting, you should be able to tune managers
178running jobs locally pretty efficiently. If you have a larger box with a weight
179of 50 on q1 and 8 concurrent jobs and a smaller box with a weight 30 and 4
180concurrent jobs, the q1 jobs will be sent to the large box until it is no longer
181accepting jobs. At this point jobs will start to be sent to the next highest
182number until the large box is ready to accept another q1 job.</p>
183<div class="admonition note">
184<p class="first admonition-title">Note</p>
185<p class="last">It is recommended that you have some workers listening for jobs on your
186default queue so that anything that is not explicitly assigned will still be
187run.</p>
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