Big Sky :: golang 㧠HTTP を使ã£ãŸå‡¦ç†ã‚’4å€é€Ÿãã™ã‚‹
I think I just made go-github 4x faster in 4 lines of code (and 4hrs). Always make sure you are reusing connections! https://t.co/ORCv1a4prv — Filippo Valsorda (@FiloSottile) March 27, 2016 go-github ã¨ã„ã†ã€Google ãŒé–‹ç™ºã—ã¦ã„ã‚‹ GitHub API ライブラリãŒã‚ã‚‹ã®ã§ã™ãŒã€ä»Šå›ž filosottile ã•ã‚“ãŒãŸã£ãŸ4è¡Œã®ã‚³ãƒ¼ãƒ‰ã§å®Ÿè¡Œé€Ÿåº¦ã‚’4å€ã«ã™ã‚‹ã¨ã„ㆠpull-request を書ãã¾ã—ãŸã€‚ ã„ã£ãŸã„ã©ã†ã„ã†äº‹ã‹ã¨ã„ã†ã¨ã€golang ã® json.Decoder を使ã£ã¦ http.Response.Body ã‹ã‚‰ JSON ã‚’èªã¿å–ã‚‹ã¨æœ€å¾Œã®æ”¹è¡Œ(EOF)ãŒèªã¿è¾¼ã¾ã‚Œãšã«æ®‹
Latency Numbers Every Programmer Should Know
latency.txt :�]�U Latency Comparison Numbers (~2012) ---------------------------------- L1 cache reference 0.5 ns Branch mispredict 5 ns L2 cache reference 7 ns 14x L1 cache Mutex lock/unlock 25 ns Main memory reference 100 ns 20x L2 cache, 200x L1 cache Compress 1K bytes with Zippy 3,000 ns 3 us Send 1K bytes over 1 Gbps network 10,000 ns 10 us Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/se
AWSマãƒã‚¸ãƒ¡ãƒ³ãƒˆã‚³ãƒ³ã‚½ãƒ¼ãƒ«ã‚’é–‹ãAlfred Workflow - ryotarai's blog
タイトルã®é€šã‚Šã§ã™ãŒã€AWSã®ãƒžãƒã‚¸ãƒ¡ãƒ³ãƒˆã‚³ãƒ³ã‚½ãƒ¼ãƒ«ã‚’é–‹ãAlfred Workflowを作りã¾ã—ãŸã€‚使ã„æ–¹ã¯ä»¥ä¸‹ã®ã¨ãŠã‚Šã€‚ （Alfredをインストールã™ã‚‹ + Powerpackã‚’è²·ã†ï¼‰ open_aws_console.alfredworkflowをダウンãƒãƒ¼ãƒ‰ã—ã¦é–‹ã„ã¦ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ« Alfredã§aws ec2ã®ã‚ˆã†ã«awsã®å¾Œã‚ã«ã‚µãƒ¼ãƒ“スåã‚’ã¤ãªã’ã‚‹ サービスãŒå¢—ãˆãŸã‚‰é©å®œã‚¢ãƒƒãƒ—デートã—ã¦ã„ãã¾ã™ã€‚ ãœã²ã”活用ãã ã•ã„。
PVH : PV Guest in HVM container
PVH allows a paravirtualized Linux guest to run in ring 0 by using a hardware-assisted virtualization technique called PVH. PVH combines aspects of para-virtualization (PV) and hardware virtualization (HVM) by using a PV entry point to boot the guest faster while still allowing the guest kernel to run in ring 0. Performance benchmarks show that PVH provides significant performance improvements ove
VT-dを使ã£ã¦Xenã§PCI-Passthroughã‚’è¨å®šã™ã‚‹æ‰‹é † at nkjmkzk.net
システム環境 CPU: Intel Core-i7 860 ãƒãƒƒãƒ—セット: Intel P55 Express マザーボード: MSI P55M-SD40 Xen: 3.4.0 dom0: Oracle VM Server (Oracle Enterprise Linux 5.3ベース) Passthrough対象ã®domU: OpenSolaris b134 PVHVM Xenã¯æ—¢ã«ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã•ã‚Œã¦ã„ã‚‹ã¨ã„ã†å‰æã§å§‹ã‚ã¾ã™ã€‚/etc/grub.confã®kernelè¡Œã«ã€Œiommu=pvã€ã¨è¿½è¨˜ã—ã¦I/O Virtualizationを有効化ã—ã¾ã™ã€‚＊ã“ã‚Œã¯BIOSã§ã®æœ‰åŠ¹ã¨ã¯ç•°ãªã‚Šã¾ã™ã€‚BIOSã§I/O Virtualizationを有効ã«ã—ãŸä¸Šã§ã“ã®è¨å®šã‚’è¡Œã„ã¾ã™ã€‚å‚考ã¾ã§ã«grub.conf全体を。 default=0 timeout=5 splashimage=(hd0,0)/
Netflixã¯218å°ã®Cassandraノードå†èµ·å‹•ã«ã©ã†å¯¾å‡¦ã—ãŸã®ã‹
Spring Bootã«ã‚ˆã‚‹APIãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰æ§‹ç¯‰å®Ÿè·µã‚¬ã‚¤ãƒ‰ 第2版 何åƒäººã‚‚ã®é–‹ç™ºè€…ãŒã€InfoQã®ãƒŸãƒ‹ãƒ–ック「Practical Guide to Building an API Back End with Spring Bootã€ã‹ã‚‰ã€Spring Bootを使ã£ãŸREST API構築ã®åŸºç¤Žã‚’å¦ã‚“ã 。ã“ã®æœ¬ã§ã¯ã€å‡ºç‰ˆæ™‚ã«æ–°ã—ãリリースã•ã‚ŒãŸãƒãƒ¼ã‚¸ãƒ§ãƒ³ã§ã‚ã‚‹ Spring Boot 2 を使用ã—ã¦ã„る。ã—ã‹ã—ã€Spring Boot3ãŒæœ€è¿‘リリースã•ã‚Œã€é‡è¦ãªå¤‰...
Linux BPF/bcc Road Ahead, March 2016
Recent posts: 29 Oct 2024 » AI Flame Graphs 22 Jul 2024 » No More Blue Fridays 24 Mar 2024 » Linux Crisis Tools 17 Mar 2024 » The Return of the Frame Pointers 10 Mar 2024 » eBPF Documentary 28 Apr 2023 » eBPF Observability Tools Are Not Security Tools 01 Mar 2023 » USENIX SREcon APAC 2022: Computing Performance: What's on the Horizon 17 Feb 2023 » USENIX SREcon APAC 2023: CFP 02 May 2022 » Brendan
Xen Feature Detection
Recent posts: 29 Oct 2024 » AI Flame Graphs 22 Jul 2024 » No More Blue Fridays 24 Mar 2024 » Linux Crisis Tools 17 Mar 2024 » The Return of the Frame Pointers 10 Mar 2024 » eBPF Documentary 28 Apr 2023 » eBPF Observability Tools Are Not Security Tools 01 Mar 2023 » USENIX SREcon APAC 2022: Computing Performance: What's on the Horizon 17 Feb 2023 » USENIX SREcon APAC 2023: CFP 02 May 2022 » Brendan
Performance of Xen VCPU Scheduling - Xen
Introduction This page evaluates the performance of the Xen VCPU schedulers with different parameters/patches and under different guest loads. The motivation was the observation that a configuration where dom0 vcpus were pinned to a set of pcpus in the host using dom0_vcpus_pin and the guests were prevented from running on the dom0 pcpus (here called "exclusively-pinned dom0 vcpus", or xpin) cause
Debianã§testingã‚„unstableã‹ã‚‰ãƒ‘ッケージを借りる時ã®æ‰‹é † - kotakã®ã²ã¾ã˜ã‚日記
普段ã¯Debian stableを使ã£ã¦ã„ã‚‹ã‘ã©ã€ãŸã¾ã«testingã‚„unstableã«ã—ã‹å…¥ã£ã¦ã„ãªã„パッケージを使ã„ãŸããªã‚‹æ™‚ãŒã‚る。ãã‚“ãªæ™‚ã®å¯¾å¿œæ–¹æ³•*1 1. /etc/apt/apt.conf.d/99target を(普通ã¯ãªã„ã®ã§)ä½œæˆ ä¸‹è¨˜è¡Œã‚’è¿½åŠ APT::Default-Release "stable"; 2. /etc/apt/source.list ä¸‹è¨˜è¡Œã‚’è¿½åŠ deb http://ftp.jp.debian.org/debian testing main contrib non-free deb-src http://ftp.jp.debian.org/debian testing main contrib non-free unstableã®ãƒ‘ッケージをインストールã—ãŸã„å ´åˆã¯ã€testingã®éƒ¨åˆ†ã‚’ç½®ãæ›ãˆã‚‹ã€‚ 3. apt-get update ※ã“ã®æ™‚
「Xen 4.6ã€å…¬é–‹ã€å¤šæ•°ã®æ©Ÿèƒ½å¼·åŒ–ã‚„æ–°æ©Ÿèƒ½è¿½åŠ ãŒè¡Œã‚れる | OSDN Magazine
Xen Projectã¯10月13æ—¥ã€ã‚ªãƒ¼ãƒ—ンソースã®ä»®æƒ³åŒ–ソフトウェア「Xen Project Hypervisor 4.6ã€ã‚’リリースã—ãŸã€‚ã‚»ã‚ュリティã«ãƒ•ã‚©ãƒ¼ã‚«ã‚¹ã—ãŸæ©Ÿèƒ½ãŒå¤šæ•°åŠ ã‚ã£ã¦ã„る。 1月ã«å…¬é–‹ã•ã‚ŒãŸXen 4.5ã«ç¶šã最新版。コードå“質ã€ã‚»ã‚ュリティãªã©ã«ãƒ•ã‚©ãƒ¼ã‚«ã‚¹ã—ãŸã€‚多数ã®æ©Ÿèƒ½å¼·åŒ–ã¨æ–°æ©Ÿèƒ½ãŒåŠ ã‚ã£ãŸã«ã‚‚é–¢ã‚らãšã€ã‚³ãƒ¼ãƒ‰ãƒ™ãƒ¼ã‚¹ã¯4.5ã¨æ¯”較ã—ã¦ç´„6000行増ãˆã‚‹ã«ã¨ã©ã¾ã£ãŸã¨ã—ã¦ã„る。 ãƒã‚¤ãƒ‘ーãƒã‚¤ã‚¶ã§ã¯ãƒ¡ãƒ¢ãƒªã‚¤ãƒ™ãƒ³ãƒˆã‚µãƒ–システムを強化ã—ã€ä»®æƒ³ãƒžã‚·ãƒ³ï¼ˆVM）イベントシステムもサãƒãƒ¼ãƒˆã—ãŸã€‚VMイベントサブシステムã¯ARMã¨x86ã®ä¸¡ã‚¢ãƒ¼ã‚テクãƒãƒ£ã‚’サãƒãƒ¼ãƒˆã—ã€ãƒ¡ãƒ¢ãƒªã‚¢ã‚¯ã‚»ã‚¹ã€ãƒ¬ã‚¸ã‚¹ã‚¿ã‚¢ã‚¯ã‚»ã‚¹ã¨ã„ã£ãŸã‚らゆるVMイベントã®å‚å—ãŒå¯èƒ½ã¨ãªã‚‹ã€‚ ã¾ãŸã€Xen Security Modules（XSM）ã§ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆãƒãƒªã‚·ãƒ¼ãŒç”¨æ„ã•ã‚ŒãŸã€‚Xen Project Test Labã§å®š
Xen Project Hypervisor Roadmap/4.6 - Xen
Release Manager We confirmed Wei Liu from Citrix as Release Manager for Xen 4.6Â : see e-mail thread As in the past, roadmap discussions will mostly happen on the xen-devel mailing list (see below). The convention is that our release manager will regularly post an e-mail called Xen 4.6 development update on the xen-devel list and that community members respond to it. The Process You can find inform
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alfred-mackerel-page-workflow/README.md at master · glidenote/alfred-mackerel-page-workflow
https://help.ubuntu.com/lts/installation-guide/example-preseed.txt
http://www.bitmover.com/lmbench/lmbench-usenix.pdf
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超絶技巧CSRF / Shibuya.XSS techtalk #7
xen 4.7 Archives - Xen Project
XenãŒThe Linux Foundationã«ç§»ç®¡ã•ã‚ŒãŸã“ã¨ã®ä¾¡å€¤ã¯ï¼Ÿï½žXenã®æ‹…当者ã«èžã
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