Hacker News: medawsonjrhttps://news.ycombinator.com/user?id=medawsonjrHacker News RSShttps://hnrss.org/hnrss v2.1.1Tue, 28 Apr 2026 19:55:53 +0000<![CDATA[CPU Affinity: Because Even a Single Chip Is Nonuniform]]>Article URL: https://www.jabperf.com/cpu-affinity-because-even-a-single-chip-is-nonuniform/

Comments URL: https://news.ycombinator.com/item?id=38808641

Points: 1

# Comments: 0

]]>Fri, 29 Dec 2023 18:44:24 +0000https://www.jabperf.com/cpu-affinity-because-even-a-single-chip-is-nonuniform/medawsonjrhttps://news.ycombinator.com/item?id=38808641https://news.ycombinator.com/item?id=38808641<![CDATA[New comment by medawsonjr in "Ask HN: Could you share your personal blog here?"]]>https://www.jabperf.com/blog/

Started it a couple years ago. I post mostly about topics in the area of IT Performance Engineering, with more emphasis on low latency than on high throughput.

]]>Wed, 05 Jul 2023 01:22:45 +0000https://news.ycombinator.com/item?id=36594532medawsonjrhttps://news.ycombinator.com/item?id=36594532https://news.ycombinator.com/item?id=36594532<![CDATA[New comment by medawsonjr in "My Fear of Commitment to the First CPU Core"]]>Hi, I'm the author. I'm glad you enjoyed it, and pleasantly surprised that Tanel posted it already. I was right in the middle of posting it myself an hour ago when I noticed it had been posted and had fostered a discussion already :)

]]>Mon, 13 Feb 2023 15:14:25 +0000https://news.ycombinator.com/item?id=34774387medawsonjrhttps://news.ycombinator.com/item?id=34774387https://news.ycombinator.com/item?id=34774387<![CDATA[New comment by medawsonjr in "Linux Kernel vs. DPDK: HTTP Performance Showdown"]]>Or better yet, Mellanox VMA since it's open source (unlike Solarflare OpenOnload) and the NICs are far less expensive.

]]>Tue, 05 Jul 2022 02:52:36 +0000https://news.ycombinator.com/item?id=31983808medawsonjrhttps://news.ycombinator.com/item?id=31983808https://news.ycombinator.com/item?id=31983808<![CDATA[5-level vs. 4-level Page Tables: Does it Matter?]]>Article URL: https://www.jabperf.com/5-level-vs-4-level-page-tables-does-it-matter/

Comments URL: https://news.ycombinator.com/item?id=31665612

Points: 2

# Comments: 0

]]>Wed, 08 Jun 2022 11:00:15 +0000https://www.jabperf.com/5-level-vs-4-level-page-tables-does-it-matter/medawsonjrhttps://news.ycombinator.com/item?id=31665612https://news.ycombinator.com/item?id=31665612<![CDATA[TLB Shootdown Analysis and Upcoming HW Support Preview]]>Article URL: https://www.jabperf.com/how-to-deter-or-disarm-tlb-shootdowns/

Comments URL: https://news.ycombinator.com/item?id=31434793

Points: 1

# Comments: 0

]]>Thu, 19 May 2022 14:03:48 +0000https://www.jabperf.com/how-to-deter-or-disarm-tlb-shootdowns/medawsonjrhttps://news.ycombinator.com/item?id=31434793https://news.ycombinator.com/item?id=31434793<![CDATA[Debunking 5 Stubborn Systems Performance Myths]]>Article URL: https://www.jabperf.com/debunking-5-stubborn-systems-performance-myths/

Comments URL: https://news.ycombinator.com/item?id=31367361

Points: 2

# Comments: 0

]]>Fri, 13 May 2022 13:31:56 +0000https://www.jabperf.com/debunking-5-stubborn-systems-performance-myths/medawsonjrhttps://news.ycombinator.com/item?id=31367361https://news.ycombinator.com/item?id=31367361<![CDATA[Not Tracking CPU IPC Along with CPU% Creates Blind Spots]]>Article URL: https://www.jabperf.com/ipc-is-to-cpu-what-milk-is-to-cinnamon-toast-crunch/

Comments URL: https://news.ycombinator.com/item?id=31259861

Points: 2

# Comments: 0

]]>Wed, 04 May 2022 13:08:59 +0000https://www.jabperf.com/ipc-is-to-cpu-what-milk-is-to-cinnamon-toast-crunch/medawsonjrhttps://news.ycombinator.com/item?id=31259861https://news.ycombinator.com/item?id=31259861<![CDATA[Using Google Benchmark's Built-In PMU Counter Support]]>Article URL: https://www.jabperf.com/google-benchmark-w-o-pmu-counters-congratulations-you-played-yourself/

Comments URL: https://news.ycombinator.com/item?id=31192526

Points: 1

# Comments: 0

]]>Thu, 28 Apr 2022 13:59:22 +0000https://www.jabperf.com/google-benchmark-w-o-pmu-counters-congratulations-you-played-yourself/medawsonjrhttps://news.ycombinator.com/item?id=31192526https://news.ycombinator.com/item?id=31192526<![CDATA[New comment by medawsonjr in "Magic-trace – High-resolution traces of what a process is doing"]]>It's configurable via MSR. You can also disable it system-wide or on a PCIe port basis. I detailed it all here:

https://www.jabperf.com/skip-the-line-with-intel-ddio/

]]>Mon, 25 Apr 2022 17:56:21 +0000https://news.ycombinator.com/item?id=31158412medawsonjrhttps://news.ycombinator.com/item?id=31158412https://news.ycombinator.com/item?id=31158412