Huamin Chen rootfs

Terminal-Bench 2.1 Retained-Source Repair Treatment

Result

CES run 2026091483495627 resolved 74 of 89 Terminal-Bench 2.1 instances (83.1%). This is a nominal absolute-quality improvement of two resolves over historical pure Opus 5 run 2026091315708394, which recorded 72/89 (80.9%). A second historical pure Opus 5 full arm recorded 71/89 (79.8%).

Howto Enable and Use A2DP Sink on Ubuntu Linux with Bluez

Add Enable=Source to /etc/bluetooth/audio.conf right after [General].
Find address in form XX:XX:XX:XX:XX:XX of phone with hcitool scan.
Pair and trust smartphone with sudo bluez-simple-agent hci0 XX:XX:XX:XX:XX:XX and sudo bluez-test-device trusted XX:XX:XX:XX:XX:XX yes.
Create loopback in pulseaudio connection bluetooth a2dp source with alsa sink:

What is this all about?

This tutorial will turn your Raspberry PI into a simple Bluetooth audio receiver, which plays music through connected speakers. It's like a regular car audio system, but it can be used anywhere and it's a good value.

   Audio source (i.e. smartphone) 
                |
                v
 (((  Wireless Bluetooth Channel  )))
 |

test env

host

MacBook

% uname -a
Darwin xxx 22.5.0 Darwin Kernel Version 22.5.0: Mon Apr 24 20:51:50 PDT 2023; root:xnu-8796.121.2~5/RELEASE_X86_64 x86_64

cluster

kind 1.27

create minikube

The following create a minikube with 10 CPU cores and 32GB memory. This is for experiments with heavy workload.

It uses kvm hypervisor. Make sure the qemu and libvirt have already installed

minikube start --cpus 10 --memory 32GB --disk-size=400g --extra-disks=2 --driver=kvm2 --force --container-runtime cri-o

install prometheus and grafana

main branch 5b9c91af68c8644911e0955639750004e803c41f

(pprof) top20 -cum (all)
Active filters:
   focus=(all)
Showing nodes accounting for 1.13s, 61.75% of 1.83s total
Showing top 20 nodes out of 186
      flat  flat%   sum%        cum   cum%
     0.85s 46.45% 46.45%      0.85s 46.45%  runtime.cgocall

Arch

# more /proc/cpuinfo
processor       : 0
BogoMIPS        : 50.00
Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp ssbs
CPU implementer : 0x41
CPU architecture: 8
CPU variant     : 0x3
CPU part        : 0xd0c

	kind: Cluster
	apiVersion: kind.x-k8s.io/v1alpha4
	nodes:
	- role: control-plane
	extraMounts:
	# Data directories
	- hostPath: /mnt/models
	containerPath: /models
	- hostPath: /mnt/data
	containerPath: /data

	#!/bin/bash
	podman ps
	podman inspect $(podman ps -q) \|grep EXPERIMENTAL_BPF_SAMPLE_RATE

	cpu_intensive_task() {
	local n=3000
	local a=101
	local b=303
	local product=0
	for (( k=0; k<n; k++ ))

	apiVersion: v1
	kind: Namespace
	metadata:
	labels:
	sustainable-computing.io/app: kepler
	name: kepler
	---
	apiVersion: v1
	kind: ServiceAccount
	metadata: