2023 talk about flamegraphs

[libguestfs-talks.git] / 2023-flamegraphs / 4000-revealed.html

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+<link rel="stylesheet" href="style.css" type="text/css"/>
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+
+<h1>What kinds of things are revealed?</h1>
+
+<ul>
+<li> Lock contention
+
+<li> Inefficient algorithms like zlib inflate
+
+<li> MSRs / slow CPU features
+
+<li> Serialization through a CPU
+
+<li> Copy to/from user
+
+<li> Page faults
+
+<li> Excessive mmap/munmap (from memory allocations)
+
+<li> Opportunities to short-cut through the stack
+</ul>