How do you program a computer with 10 terabytes of RAM? - High Scalability -
« Stuff The Internet Says On Scalability For August 7th, 2015 | Main | Sponsored Post: Surge, Redis Labs, Jut.io, VoltDB, Datadog, Power Admin, MongoDB, SignalFx, InMemory.Net, Couchbase, VividCortex, MemSQL, Scalyr, AiScaler, AppDynamics, ManageEngine, Site24x7 » How do you program a computer with 10 terabytes of RAM in a single address space? When the great Adrian Cockcroft was interviewed for
The Black Magic of Systematically Reducing Linux OS Jitter - High Scalability -
« Stuff The Internet Says On Scalability For April 10th, 2015 | Main | What do we know about how Meerkat Works? » How do you systematically identify the sources of jitter and remove them one by one in a low-latency trading system? That was the question asked on the mechanical-sympathy email list. Gil Tene, Vice President of Technology and CTO, Co-Founder, Azul Systems gave the sort of answer that
A Toolkit to Measure Basic System Performance and OS Jitter - High Scalability -
« Stuff The Internet Says On Scalability For May 29th, 2015 | Main | Sponsored Post: Tumblr, Power Admin, Learninghouse, MongoDB, Internap, Aerospike, SignalFx, InMemory.Net, Couchbase, VividCortex, MemSQL, Scalyr, AiScaler, AppDynamics, ManageEngine, Site24x7 » Jean Dagenais published a great response on a mechanical-sympathy thread to Gil Tene's article, The Black Magic Of Systematically Reducin
How Twitter Uses Redis to Scale - 105TB RAM, 39MM QPS, 10,000+ Instances - High Scalability -
Yao Yue has worked on Twitter’s Cache team since 2010. She recently gave a really great talk: Scaling Redis at Twitter. It’s about Redis of course, but it's not just about Redis. Yao has worked at Twitter for a few years. She's seen some things. She’s watched the growth of the cache service at Twitter explode from it being used by just one project to nearly a hundred projects using it. That's many
Update on Disqus: It's Still About Realtime, But Go Demolishes Python - High Scalability -
« Stuff The Internet Says On Scalability For May 9th, 2014 | Main | The Quest for Database Scale: the 1 M TPS challenge - Three Design Points and Five common Bottlenecks to avoid » Our last article on Disqus: How Disqus Went Realtime With 165K Messages Per Second And Less Than .2 Seconds Latency, was a little out of date, but the folks at Disqus have been busy implementing, not talking, so we don'
How Disqus Went Realtime with 165K Messages Per Second and Less than .2 Seconds Latency - High Scalability -
« Sponsored Post: Apple, Wargaming.net, PagerDuty, HelloSign, CrowdStrike, Gengo, ScaleOut Software, Couchbase, Tokutek, MongoDB, BlueStripe, AiScaler, Aerospike, LogicMonitor, AppDynamics, ManageEngine, Site24x7 | Main | Stuff The Internet Says On Scalability For April 25th, 2014 » Here's an Update On Disqus: It's Still About Realtime, But Go Demolishes Python. How do you add realtime functionali
Busting 4 Modern Hardware Myths - Are Memory, HDDs, and SSDs Really Random Access? - High Scalability -
« Stuff The Internet Says On Scalability For June 14, 2013 | Main | Sponsored Post: Apple, Two Sigma, Cendea, RAMP, Blurocket, Incapsula, Dow Jones, Surge, Rackspace, aiCache, Aerospike, Percona, ScaleOut, New Relic, LogicMonitor, AppDynamics, ManageEngine, Site24x7 » Martin Thompson is a High Performance Computing Specialist with a real mission to teach programmers how to understand the innards o
10 Things You Should Know About AWS - High Scalability -
« Paper: Tempest: Scalable Time-Critical Web Services Platform | Main | ESPN's Architecture at Scale - Operating at 100,000 Duh Nuh Nuhs Per Second » Authored by Chris Fregly: Former Netflix Streaming Platform Engineer, AWS Certified Solution Architect and Purveyor of fluxcapacitor.com. Ahead of the upcoming 2nd annual re:Invent conference, inspired by Simone Brunozzi’s recent presentation at an
Wide Fast SATA: the Recipe for Hot Performance - High Scalability -
With a properly configured wide system, these numbers scale laterally. LSI 2208 or similar The LSI 2208 is used in the Dell H710p, which is available for the R720xd. Other Dell cards, notably the H310 series, are particularly bad. Get the MegaCli configuration tool The MegaCli tool is sometimes hard to find. We were able to find it eventually with Google. You can search at LSI’s website for the to
Strategy: Use Linux Taskset to Pin Processes or Let the OS Schedule It? - High Scalability -
« Stuff The Internet Says On Scalability For October 25th, 2013 | Main | Google's Sanjay Ghemawat on What Made Google Google and Great Big Data Career Advice » This question comes from Ulysses on an interesting thread from the Mechanical Sympathy news group, especially given how multiple processors are now the norm: Ulysses: On an 8xCPU Linux instance, is it at all advantageous to use the Linux t
Strategy: Stop Using Linked-Lists - High Scalability -
« Paper: Calvin: Fast Distributed Transactions for Partitioned Database Systems | Main | The Tumblr Architecture Yahoo Bought for a Cool Billion Dollars » What data structure is more sacred than the link list? If we get rid of it what silly interview questions would we use instead? But not using linked-lists is exactly what Aater Suleman recommends in Should you ever use Linked-Lists? In The Secre
The Secret to 10 Million Concurrent Connections -The Kernel is the Problem, Not the Solution - High Scalability -
« Sponsored Post: Dow Jones, Spotify, Evernote, Surge, Rackspace, Amazon, Booking, aiCache, Aerospike, Percona, ScaleOut, New Relic, LogicMonitor, AppDynamics, ManageEngine, Site24x7 | Main | Stuff The Internet Says On Scalability For May 10, 2013 » Now that we have the C10K concurrent connection problem licked, how do we level up and support 10 million concurrent connections? Impossible you say.
Scaling Pinterest - From 0 to 10s of Billions of Page Views a Month in Two Years - High Scalability -
« Sponsored Post: Surge, Rackspace, Simple, Fitbit, Amazon, Booking, aiCache, Aerospike, Percona, ScaleOut, New Relic, LogicMonitor, AppDynamics, ManageEngine, Site24x7 | Main | Stuff The Internet Says On Scalability For April 12, 2013 » Pinterest has been riding an exponential growth curve, doubling every month and half. They’ve gone from 0 to 10s of billions of page views a month in two years, f
Beyond Threads and Callbacks - Application Architecture Pros and Cons - High Scalability -
« Sponsored Post: Fitbit, OLO, Amazon, aiCache, Aerospike, Percona, ScaleOut, New Relic, Logic Monitor, AppDynamics, ManageEngine, Site24x7 | Main | Stuff The Internet Says On Scalability For March 15, 2013 » There's not a lot of talk about application architectures at the process level. You have your threads, pools of threads, and you have your callback models. That's about it. Languages/framewo
Save up to 30% by Selecting Better Performing Amazon Instances - High Scalability -
« Stuff The Internet Says On Scalability For October 19, 2012 | Main | World of Warcraft's Lead designer Rob Pardo on the Role of the Cloud in Games » If you like the idea of exploiting market inconsistencies to lower your costs then you will love this paper and video from the Hot Cloud '12 conference: Exploiting Hardware Heterogeneity within the Same Instance Type of Amazon EC2. The conclusion is
Switch your databases to Flash storage. Now. Or you're doing it wrong. - High Scalability -
The right way to do it is to just not use O_DIRECT. The whole notion of "direct IO" is totally braindamaged. Just say no. This is your brain: O This is your brain on O_DIRECT: . Any questions? Our measurements show that the page cache dramatically increases latency. At the speeds of flash storage, the page cache is disastrous. Linus agreed substantially in his own post: Side note: the only reason
Big List of 20 Common Bottlenecks - High Scalability -
Hey guys - it's always awesome to see a listing of common bottlenecks, especially if you are new to some technology or environments. But it's also dangerous to use such a list as a crutch - or a replacement - to really being able to understand performance bottleneck root cause and resource utilization. http://mtomlins.blogspot.com/2012/04/bucket-full-of-bottlenecks.html Cheers, -mt Nice list, have
Performance data for LevelDB, Berkley DB and BangDB for Random Operations - High Scalability -
« Stuff The Internet Says On Scalability For November 30, 2012 | Main | Sponsored Post: Akiban, Booking, Teradata Aster, Hadapt, Zoosk, Aerospike, Server Stack, Wiredrive, NY Times, CouchConf, FiftyThree, Percona, ScaleOut, New Relic, NetDNA, GigaSpaces, AiCache, Logic Monitor, AppDynamics » This is a guest post by Sachin Sinha, Founder of Iqlect and developer of BangDB. The goal for the paper is
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FastBit: An Efficient Compressed Bitmap Index Technology - High Scalability -
How big is a Petabyte, Exabyte, Zettabyte, or a Yottabyte? - High Scalability -