Tech on Onoe's Portfolio

Reinventing-the-Wheel Learning in the Age of AI: Lessons from Building an AI Agent with AI

Wed, 24 Dec 2025 09:00:00 +0900

It’s Christmas Eve. I hope everyone is having a good holiday season. I attended a conference in Nashville, Tennessee last week¹ and got a little taste of American Christmas.

In this post, I’d like to share my current thoughts on what reinventing-the-wheel learning should look like in the age of AI, based on my experience actually trying it out.

Running RDMA in Containers on Kubernetes and Benchmarking Performance

Mon, 31 Mar 2025 23:00:00 +0900

I got RDMA working in containers on Kubernetes using SR-IOV, so I’m documenting the process including the issues I ran into. I also benchmarked the performance of RDMA vs TCP/IP.

Participated in ISUCON14 (6,659 points)

Mon, 09 Dec 2024 10:00:00 +0900

This year, I once again participated in ISUCON14 as team MONOS with Saza and Moririn. We scored 6,659 points, placing 277th overall. Compared to last time (13th overall, 3rd among students), it was quite a disappointing result, but we had a fun day.

Building a Home VM Infrastructure with KubeVirt

Sat, 15 Jun 2024 17:00:00 +0900

KubeVirt is a tool for managing VM infrastructure. With KubeVirt, you can manage VMs on Kubernetes in the same way as containers. I tried KubeVirt to easily spin up VMs at home, so I’ll share the method and my impressions.

Building an sgkey and Playing with TinyGo

Sat, 09 Dec 2023 00:00:01 +0900

At the after-party of Go Conference mini 2023 Winter IN KYOTO¹, sago35 gave me an sgkey micropad assembly kit. I had already been interested in custom keyboards, and sago35’s talk “Continued: The World of Custom Keyboards Made with TinyGo²” along with the live coding was so interesting that I decided to buy the necessary parts and have some fun with sgkey and TinyGo³.

Exploring the eBPF-based OpenTelemetry Auto-Instrumentation Library for Go

Tue, 05 Dec 2023 00:01:00 +0900

I discovered opentelemetry-go-instrumentation, a library that enables automatic OpenTelemetry instrumentation for Go. It leverages eBPF. Let me walk through running and briefly examining this library.

3rd Place Student / 13th Overall at ISUCON13 (111,625 points)

Sun, 26 Nov 2023 18:12:18 +0900

Together with Saza and Moririn, we placed 3rd among student teams and 13th overall at ISUCON13 with a score of 111,625 points. Our team name was MONOS. It was my first time participating, while the other two had competed in the previous edition. I’ll jot down what we did in chronological order as a retrospective.

[Go] Digging Up net.Conn: http and mysql Edition

Thu, 02 Feb 2023 02:32:57 +0900

This article explains how to extract net.Conn from Go’s net/http and go-sql-driver/mysql to directly read and write HTTP and MySQL connections. While rarely needed in typical library usage, this can be useful when you want to rewrite payloads at the transport layer level.

Creating a Bridge-Connected VM with KVM

Sat, 05 Nov 2022 23:00:00 +0900

I created a VM using KVM on an Ubuntu PC at home. To allow SSH access to the VM from external hosts, I connected the VM to a bridge network created on the host. I ran into several issues along the way, so I’m documenting the entire procedure here.