Intel 82599 10GbE Controllerで遊ぼうAccelerating Envoy and Istio with Cilium and the Linux KernelThomas Graf
フルHD液晶、SSD RAID搭載の“1キロ”Ultrabook――「Aspire S7-191」で極上PCライフを体験する
A4用紙よりも小さくて、厚さは12.2ミリ――そんな超小型Ultrabookが日本エイサーから登場した。「Aspire S7-191」は11.6型ワイドディスプレイを搭載する極薄ノートPCだ。 こちらは、先にレビューした厚さ11.9ミリの13.3型モデル「Aspire S7-391」と同様に、タッチパネルを内蔵しつつ、厚さを12.2ミリに抑えた世界最薄（11.6型液晶ディスプレイを搭載するUltrabookにおいて。2012年11月現在、同社調べ）のUltrabookとなる。 Aspire S7-191は、ただ単にAspire S7-391のサイズを小さくしたマシンではない。基本的なスペックなどはほぼ共通だが、外観のデザインやキーボードが異なるほか、画面が小さくなったことにより、見やすさやタッチパネルの使い心地も変わるかもしれない。今回は、そういったAspire S7-391との違いに主眼
NICのオフロード機能を無効にする - Qiita
NICのオフロード機能(OS側ではなくNIC側でパケットの分割とかを行う機能)を利用しているとバグのせいかままRSTが発生したりしてパケットの再送(tcpだと強制的に3s待たされる)が起こりネットワークで遅延する場合が増えることがある。やっかいなことにデフォルトではこの機能がonになっていることが多いのでそれをoffにする方法。ethtoolコマンドで行える。 オフロード機能の状態確認
Enabling BIOS options on a live server with no rebooting at time to bleed by Joe Damato
This blog post is going to describe a C program that toggles some CPU and chipset registers directly to enable Direct Cache Access without needing a reboot or a switch in the BIOS. A very fun hack to write and investigate. Special thanks… Special thanks going out to Roman Nurik for helping me make the code CSS much, much prettier and easier to read. Special thanks going out to Jake Douglas for con
Threading models: So many different ways to get stuff done. at time to bleed by Joe Damato
Why do I care? Threading models are often very confusing; there are many different models with different trade-offs and dissecting the details can be tough the first time around. It is important for any large scale project to consider what threading model(s) a programming language supports and what implications the model(s) will have on the system design so that the software system that performs a
Why interrupt affinity with multiple cores is not such a good thing - Alex on Linux
Why interrupt affinity with multiple cores is not such a good thing One of the features of x86 architecture is ability to spread interrupts evenly among multiple cores. Benefits of such configuration seems to be obvious. Interrupts consume CPU time and by spreading them on all cores we avoid bottle-necks. I’ve written an article explaining this mechanism in greater detail. Yet let me remind you ho
Using Apache With RPM Based Systems (Redhat / CentOS / Fedora) - Apache HTTP Server Version 2.4
Using Apache With RPM Based Systems (Redhat / CentOS / Fedora) While many distributions make Apache httpd available as operating system supported packages, it can sometimes be desirable to install and use the canonical version of Apache httpd on these systems, replacing the natively provided versions of the packages. While the Apache httpd project does not currently create binary RPMs for the vari
Welcome — Theano 0.9.0 documentation
Welcome¶ Theano is a Python library that allows you to define, optimize, and evaluate mathematical expressions involving multi-dimensional arrays efficiently. Theano features: tight integration with NumPy – Use numpy.ndarray in Theano-compiled functions. transparent use of a GPU – Perform data-intensive computations much faster than on a CPU. efficient symbolic differentiation – Theano does your d
Intel(R) Core(TM)2 Duo Processor Overview
Using Intel.com Search You can easily search the entire Intel.com site in several ways. Brand Name: Core i9 Document Number: 123456 Code Name: Emerald Rapids Special Operators: “Ice Lake”, Ice AND Lake, Ice OR Lake, Ice* Quick Links You can also try the quick links below to see results for most popular searches. Product Information Support Drivers & Software
Linux の Forwarding処理概要浅間 正和 @ 有限会社 銀座堂はじめに• Linux Kernel のソースコードを参照しながら Linux Kernel が forwarding 処理をどのように行っているのかを説明していきます。•
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Kernel/VM Advent Calendar 25日目 最近のPCアーキテクチャにおける割り込みルーティングの仕組み - syuu1228's blog
※追記：MSIはPCI 3.0からじゃなくてPCI 2.3からだとの指摘を受けて書き換え。 ※追記：hisakさんから詳しくコメントが入っているので、併せて読んで下さい。 とてつもなく遅れたKernel/VM Advent Calendarの25日目の記事です。 Linuxにおける/proc/irq//smp_affinityはハードウェアにどのような設定を行うことにより実現されているのか、或いは最近のPCアーキテクチャにおける割り込みの仕組みはどうなっているのか、という辺りが知りたかったので調べてみた。 結構こんがらがっているので、予想外に時間を食ってしまった…まだ調べ尽くせていないが、分からない事はTODOとして一旦現時点での理解を書いておこうと思う。 前提条件 2つ以上のCPUコアを持つ、Core2世代或いはCore iシリーズ世代のIntel CPU／チップセット 割り込みを行う主
Diving into the Linux Networking Stack, Part I | Beyond Syntax | Michael J. Schultz
This is the first part of a (planned) multi-part series on receiving a network packet on a modern Linux kernel. Have you ever wondered what happens when your Linux machine gets a packet from the network? I have, but most of the information I've seen is concerned with the 2.4.x kernel. For my own sake, I decided to take a walk through the Linux networking stack (using Linux kernel 2.6.37) and thoug
Useful kernel and driver performance tweaks for your Linux server at time to bleed by Joe Damato
This article is going to address some kernel and driver tweaks that are interesting and useful. We use several of these in production with excellent performance, but you should proceed with caution and do research prior to trying anything listed below. Tickless System The tickless kernel feature allows for on-demand timer interrupts. This means that during idle periods, fewer timer interrupts will
Intel(R) Core(TM)2 Duo Processor Overview
Using Intel.com Search You can easily search the entire Intel.com site in several ways. Brand Name: Core i9 Document Number: 123456 Code Name: Emerald Rapids Special Operators: “Ice Lake”, Ice AND Lake, Ice OR Lake, Ice* Quick Links You can also try the quick links below to see results for most popular searches. Product Information Support Drivers & Software
Intel(R) Core(TM)2 Duo Processor Overview
Using Intel.com Search You can easily search the entire Intel.com site in several ways. Brand Name: Core i9 Document Number: 123456 Code Name: Emerald Rapids Special Operators: “Ice Lake”, Ice AND Lake, Ice OR Lake, Ice* Quick Links You can also try the quick links below to see results for most popular searches. Product Information Support Drivers & Software
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nmon and njmon | Main / HomePage
This systems administrator, tuner, and benchmark tool the gives you a huge amount of important performance information in one go. It can output the data in two ways On screen (console, telnet, VNC, putty or X Windows) using curses for low CPU impact which is updated once every two seconds. You hit single characters on you keyboard to enable/disable the various sorts of data. You can display the CP
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9 Linux ethtool Examples to Manipulate Ethernet Card (NIC Card)
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A Few Things You Didn’t Know about Signals in Linux Part 1 at time to bleed by Joe Damato
I/O models: how you move your data matters at time to bleed by Joe Damato
AndroidのNFC機能でFeliCaの読み書きをする | −ゆめログ− | ゆめみスタッフブログ
RSS with Message Signaled Interrupts - Windows drivers
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