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<p style="margin: 10px 0 0 0">Bbetween 1.1.6 and 1.1.7 compression was <a href="https://github.com/qos-ch/logback/commit/fb862bb156593d10c84f7dd4ccba6503631d3a8f#diff-79ef0b37967e48403c7d0e11abfd461f" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">changed</a> so that each compression task runs in the per-context executor.</p>
<p style="margin: 10px 0 0 0">Also between 1.1.6 and 1.1.7 a <tt>ScheduledExecutorService</tt> was <a href="https://github.com/qos-ch/logback/commit/151857344eaefda8f641d93ac23e9e2c1be2b723#diff-618d23b0c837f999b0c4ca8c98196857L170" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">added to the context</a>. But the per-context <tt>ExecutorService</tt> is now deprecated (and calling <tt>getExecutorService()</tt> actually gives you the <tt>ScheduledExecutorService</tt>).</p>
<p style="margin: 10px 0 0 0">In 1.1.6 the <tt>ExecutorService</tt> was set up like this:</p>
<div class="preformatted panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal; white-space: pre; word-break: normal; word-wrap: break-word; word-break: break-word; white-space: pre-wrap">static public ExecutorService newExecutorService() {
return new ThreadPoolExecutor(CoreConstants.CORE_POOL_SIZE, CoreConstants.MAX_POOL_SIZE, 0L, TimeUnit.MILLISECONDS, new SynchronousQueue<Runnable>(),
THREAD_FACTORY);
}
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<p style="margin: 10px 0 0 0">where <tt>CoreConstants.MAX_POOL_SIZE</tt> is 32. But in 1.1.7 the executor is set up like this:</p>
<div class="preformatted panel" style="border-width: 1px;; border: 1px solid #ccc; background: #f5f5f5; font-size: 12px; line-height: 1.333; font-family: monospace; border: 1px solid #ccc; -moz-border-radius: 3px 3px 3px 3px; border-radius: 3px 3px 3px 3px; margin: 9px 0">
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<pre style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal; white-space: pre; word-break: normal; word-wrap: break-word; word-break: break-word; white-space: pre-wrap"> static public ScheduledExecutorService newScheduledExecutorService() {
return new ScheduledThreadPoolExecutor(CoreConstants.SCHEDULED_EXECUTOR_POOL_SIZE, THREAD_FACTORY);
}
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<p style="margin: 10px 0 0 0">where <tt>CoreConstants.SCHEDULED_EXECUTOR_POOL_SIZE</tt> is 2. So the number of tasks than can run concurrently has reduced quite significantly.</p>
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