https://marktaguiad.dev/tags/zram/ Recent content in Zram on marktaguiad.dev Hugo en-us marktaguiad@marktaguiad.dev (Mark Taguiad) marktaguiad@marktaguiad.dev (Mark Taguiad) marktaguiad.dev Fri, 27 Mar 2026 00:00:00 +0000 https://marktaguiad.dev/post/zram/ Fri, 27 Mar 2026 00:00:00 +0000marktaguiad@marktaguiad.dev (Mark Taguiad) https://marktaguiad.dev/post/zram/ <p>ZRAM is a compressed block device that lives in RAM. It allows the system to store data in memory in a compressed form instead of pushing it to disk swap.</p> <p>In simple terms:</p> <ul> <li>It acts like swap</li> <li>But stays in RAM</li> <li>And compresses data to fit more</li> </ul> <p>This means faster access times and less reliance on slow disk I/O.</p> <h1 id="table-of-contents">Table of Contents</h1> <nav id="TableOfContents"> <ol> <li><a href="#the-problem">The Problem</a></li> <li><a href="#setup">Setup</a> <ol> <li><a href="#install">Install</a></li> <li><a href="#configuration">Configuration</a></li> <li><a href="#verify">Verify</a></li> <li><a href="#swappiness">Swappiness</a></li> </ol> </li> </ol> </nav> <h3 id="the-problem">The Problem</h3> <p>I&rsquo;m running my docker <a href="https://github.com/mcbtaguiad/mailmoto/tree/main">mail</a> stack and Pangolin Reverse Proxy, this eats up RAM when a high volume of email hits the server and the RSPAM evaluate the email sents. And also from traffic forwarded by my local servers going to the Pangolin Reverse Proxy - an upgrade would be the absolute fix but ZRAM would slightly help with the RAM shortage.</p>