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Displaying posts with tag: Hardware (reset)
MySQL distributed message system

Based on messages, we create mysql replication platforms , using async message to build strong distributed subscription system.

read this PDF : http://www.vmcd.org/docs/MySQL_async_message.pdf

LLC-Technologies-Collier/Demo-SCCC-Byte-AngularJS

Hello dear readers and attendees,

This is the post that I will be/ will have been referencing during my presentation to the Seattle Central Community College’s Byte club on Thursday, December 10th at 1500-1630.

I will begin with a bit of an autobio and find out what kind of students we have in attendance. Please feel free to comment if you’d like to keep in touch before or after the presentation. I will discuss some of the bits and pieces of some industry standard platforms which I’ve developed, deployed, maintained, managed, co-operated, administered and replaced. We can discuss some of the patterns that work well in the industry, and some that are a bit harder to tame.

Once we have touched most of the areas of specialization represented at the meeting, I will dive in to an AngularJS demo I am developing in github here:

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TokuDB benchmark on PCIe

MariaDB TokuDB benchmark on FusionIO ,Compare TokuDB and InnoDB engines.

read: TokuDB_benchmark

NVMFS Supports Atomic Writes

Benchmark for NVMFS (supports atomic writes ,so we can close double-write option on specific MySQL version )

tips: some Flash-based cards could support large block map , the main idea is to avoid fractured page writes.

http://www.vmcd.org/docs/nvmfs_benchmark.pdf

How to Purchase [Benchmarking] Hardware on a Budget

One of my goals at Acmebenchmarking is make sure I'm running on hardware that is representative of real-world infrastructure, while at the same time doing it as inexpensively as possible.

To date I've been running on two custom built "desktops" (for lack of a better term). Both have an Intel Core i7 4790K processor (quad core plus hyperthreading, 4Ghz), 32GB RAM (dual channel), and a quality SSD. They are named acmebench01 and acmebench02.

Alas, it is time to expand. MUST...PURCHASE...MORE...HARDWARE!

In order to maintain the inexpensive theme I tend to buy used hardware, my goal on this purchase was to achieve many more cores and greater memory bandwidth than my existing machines can provide. Keep in mind that used hardware is great for benchmarking (and likely development and QA environments) but you might want to avoid it for production. For years now I've been purchasing used hardware …

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True KVM Live Migration with OpenStack Icehouse and Ceph based VM storage

Over on the codecentric blog I just published a new post on True KVM Live Migration with OpenStack Icehouse and Ceph based VM storage, outlining the process it took me to get this actually working. There were several issues to work around, some of them bugs in OpenStack, some of them home-grown issues.

I provide a few patches to OpenStack classes as well as a description of what is actually going wrong and how to circumvent the problems. So head right over and have fun reading :)

Ceph Storage Cluster

At Data2Day 2014 in Karlsruhe I talked about the Ceph Storage Cluster and us using it to store documents in CenterDevice. These are the slides (German) I used. If you are interested in Ceph and/or look for help implementing it, don't hesitate to contact me.

Ceph Object Store from Daniel Schneller

Ansible: Simple, yet powerful automation

On the company blog I published a post about our experience with Ansible today.

It is no shoot out between different automation tools, but rather a collection of Ansible basics and our experience with it so far. Soon another post will follow about dynamically generated inventories for OpenStack virtual environments.

You can find it here: codecentric blog: Ansible: Simple, yet powerful automation.

How to improve InnoDB performance by 55% for write-bound loads

During April’s Percona Live MySQL Conference and Expo 2014, I attended a talk on MySQL 5.7 performance an scalability given by Dimitri Kravtchuk, the Oracle MySQL benchmark specialist. He mentioned at some point that the InnoDB double write buffer was a real performance killer. For the ones that don’t know what the innodb double write buffer is, it is a disk buffer were pages are written before being written to the actual data file. Upon restart, pages in the double write buffer are rewritten to their data files if complete. This is to avoid data file corruption with half written pages. I knew it has an impact on performance, on ZFS since it is transactional I always disable it, but I never realized how important the performance impact could be. Back from PLMCE, a friend had dropped home a Dell R320 server, asking …

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GUUG Frühjahrsfachgespräch 2014: CfP ends on May 31st!

The German Unix User Group (GUUG) will hold their annual conference "Frühjahrsfachgespräch" on September 23-26 this year (I know, not really "Frühjahr" anymore, but this is how it is).

The Call for Presentations is still open until May 31st. Talks can be proposed in German and English, and there are slots for longer tutorials as well.

The range of possible topics is broad, so if you think you have anything interesting to share with a very passionate and technical audience of sysadmins and developers, here are some suggestions:

  • Operating Systems/Applications: architectures, privilege concepts, new developments, administration, mobile systems
  • Relevant new OS Kernel features: new developments in Linux-, BSD- or other Spen …
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Showing entries 11 to 20 of 89
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