https://www.rocasta.com/tags/unix/Recent content in Unix on Rocasta Dot ComHugoenWed, 26 Mar 2025 00:00:00 +0000https://www.rocasta.com/posts/2025-03-26-diagnose-smb-latency/Wed, 26 Mar 2025 00:00:00 +0000https://www.rocasta.com/posts/2025-03-26-diagnose-smb-latency/<div class="sect1"> <h2 id="_diagnosing_the_problem"><a class="anchor" href="#_diagnosing_the_problem"></a>1. Diagnosing the Problem</h2> <div class="sectionbody"> <div class="olist arabic"> <ol class="arabic"> <li> <p>Check Network Speed</p> <div class="ulist"> <ul> <li> <p>Use <code>iperf3</code> to measure network throughput between the two Macs.</p> <div class="listingblock"> <div class="content"> <pre class="rouge highlight"><code data-lang="shell"><span class="c"># On Mac B (SMB Server)</span> iperf3 <span class="nt">-s</span> <span class="c"># On Mac A (Client)</span> iperf3 <span class="nt">-c</span> &lt;Mac B<span class="s1">&#39;s IP&gt;</span></code></pre> </div> </div> </li> <li> <p>If the speed is close to 1Gbps, the network is performing as expected.</p> </li> <li> <p>If it’s significantly lower (e.g., below 500 Mbps), there may be a bottleneck in the network hardware or cabling.</p> </li> </ul> </div> </li> <li> <p>Check Latency with <code>ping</code></p> <div class="ulist"> <ul> <li> <p>Use <code>ping</code> to measure round-trip time between Mac A and Mac B.</p> <div class="listingblock"> <div class="content"> <pre class="rouge highlight"><code data-lang="shell">ping <span class="nt">-c</span> 10 &lt;Mac B<span class="s1">&#39;s IP&gt;</span></code></pre> </div>