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y_uuki

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github.com 3mo ago

Prometheus Exporter for RDMA (RoCE) NIC Statistics in Linux

y_uuki
3pts0
github.com 9mo ago

A leader election daemon using Consul Session and KV Lock for VIP failover

y_uuki
1pts0
github.com 1y ago

tcpulse: A TCP/UDP load generator that provides fine-grained, flow-level control

y_uuki
43pts7
github.com 1y ago

The AIOps library for removing automatically failure-unrelated metrics

y_uuki
1pts1
yuuk.io 4y ago

Low Overhead TCP/UDP eBPF-Based Tracing for Discovering Dependencies [pdf]

y_uuki
2pts0
yuuk.io 6y ago

HeteroTSDB: An Extensible Time Series Database on Heterogeneous Key-Value Stores [pdf]

y_uuki
17pts4
mackerel.io 8y ago

Understanding why the Linux loadavg rises every 7 hours

y_uuki
2pts0
github.com 8y ago

The Linux netlink-based TCP connection flow printer

y_uuki
2pts0
github.com 8y ago

A simple AWS CloudFormation stacks manager

y_uuki
2pts0
github.com 8y ago

The Linux /proc/net/tcp based host-to-host connection flow printer

y_uuki
2pts0
github.com 8y ago

The Linux netfilter conntrack-based host-to-host connection flow printer

y_uuki
2pts0
github.com 8y ago

A lightweight, high-performance, language-independent job queue system

y_uuki
108pts38
speakerdeck.com 10y ago

Writing Tools in Go for Ops Engineers #go16party

y_uuki
1pts0
github.com 10y ago

An Ops-Friendly AWS Elastic Network Interface (ENI) Attachment Grabbing Tool

y_uuki
1pts0
github.com 10y ago

Yet Another Keepalived Syntax Checker in Golang

y_uuki
1pts0
github.com 10y ago

Droot: a super-easy application container engine with chroot without docker

y_uuki
4pts0

iperf3 is a link “speedometer” – spin it up between two hosts, crank -P or -u -b, and it tells you max TCP/UDP throughput (and jitter/loss if you like).

tcpulse is a fine-grained traffic “microscope” – you dial exact CPS or concurrent sockets, spray dozens of targets from one client, and get p90/p95/p99 latencies per flow.

Use iperf3 for a quick bandwidth check; use tcpulse when you need repeatable, controlled connection patterns and detailed latency stats across many backends.

MetricSifter is a feature reduction framework designed to accurately identify anomalous metrics caused by faults for enhancing fault localization. Our key insight is that the change point times inside the failure duration are close to each other for the failure-related metrics. MetricSifter detects change points per metric, localizes the time frame with the highest change point density, and excludes metrics with no change points in that time frame. The offline change point detection is implemented by ruptures, and the segmentation of the detected change points is based on kernel density estimation (KDE).