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How to receive a million packets per second
Last week during a casual conversation I overheard a colleague saying: "The Linux network stack is slow! You can't expect it to do more than 50 thousand packets per second per core!" That got me thinking. While I agree that 50kpps per core is probably the limit for any practical application, what is the Linux networking stack capable of? Let's rephrase that to make it more fun: On Linux, how hard
Kvm performance optimization for ubuntu
This document discusses various techniques for optimizing KVM performance on Linux systems. It covers CPU and memory optimization through techniques like vCPU pinning, NUMA affinity, transparent huge pages, KSM, and virtio_balloon. For networking, it discusses vhost-net, interrupt handling using MSI/MSI-X, and NAPI. It also covers block device optimization through I/O scheduling, cache mode, and a
Linux packet-forwarding
2. はじめまして？ • 新潟県三条市にある地域 ISP 有限会社銀座堂でサーバ管理やネット ワーク管理をしています • 弊社では上流 ISP(OCN さんと新潟県内の ISP) や Echigo-IX(新潟県 内の地域 IX) との接続に Linux(Vyatta Core) を使って BGP 接続を しています • 2010 年頃から Linux カーネルのパケット転送処理について調べ InternetWeek で発表したりしていました • 趣味では IETF で標準化が進められている MAP(Mapping of Address and Port with Encapsulation) というプロトコルを Linux カーネルに実装し Vyatta Core に組み込み ASAMAP という名前で オープンソースで公開したりしています 2 3. ASAMAP？ • IPv4 over
Chapter 4. CPU | Red Hat Product Documentation
The term CPU, which stands for central processing unit, is a misnomer for most systems, since central implies single, whereas most modern systems have more than one processing unit, or core. Physically, CPUs are contained in a package attached to a motherboard in a socket. Each socket on the motherboard has various connections: to other CPU sockets, memory controllers, interrupt controllers, and o
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Fetched URL: http://b.hatena.ne.jp/yass/linux/numa/
Alternative Proxies:
lanceshelton/irqstat · GitHub - A better way to watch /proc/interrupts, designed for NUMA systems with many processors.
https://osdn.co.jp/event/kernel2003/pdf/C02.pdf
