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--- newsletters:2024-12 [2024/12/31 21:25] – [December 2024 newsletter] osnr
+++ newsletters:2024-12 [2024/12/31 22:24] (current) – [New parallel evaluator] osnr
@@ Line 114: / Line 114: @@
 === Performance and memory leaks ===
-For most of this month, I've been staring at increasingly elaborate [[https://github.com/wolfpld/tracy|Tracy]] views of folk2 (and adding more hooks to folk2 to report more info to Tracy, and fixing performance bottlenecks and behavioral bugs and leaks flagged by the Tracy view). Tracy is really, really amazing software.
+For most of this month, I've been staring at increasingly elaborate [[https://github.com/wolfpld/tracy|Tracy]] views of folk2 (and adding more [[https://github.com/osnr/db/blob/e5a7256863927f4a1a9fd2202a10b6fc0aedc3a4/prelude.tcl#L240|hooks]] to folk2 to report more info to Tracy, and fixing performance bottlenecks and behavioral bugs and leaks flagged by the Tracy view). Tracy is really, really amazing software.
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     * "We were not freeing aborted ref which caused us to run out of statement slots which caused statementNew to hang which caused the global workqueue to overflow."
+  * Fixed horrible bug where my steal-half deque operation was wrong (so were dropping lots of operations, the system was not behaving correctly), replaced with more standard steal-one
 I'm kind of addicted to using Tracy -- it feels like it obsoletes a lot of the monitoring stuff I'd hacked into folk2, because you can just use Tracy to //see// everything (as long as you add the right hooks). No need for perf probes, or gperftools heap monitoring, or the trace log endpoint. The Tracy hooks are low-overhead (nanoseconds), networking is taken care of for you, and they automatically give you great visualizations that you can zoom and pan and see in context with all other info (which also reduces the need for boiling things down to summary statistics).