YippieMove switches from VMware to FreeBSD Jails

YippieMove has move from vmware for FreeBSD Jails as they’re more efficient:


 We doubled the amount of memory per server, we quadrupled sqlite’s internal buffers, we turned off sqlite auto-vacuuming, we turned off synchronization, we added more database indexes. These things helped but not enough. We twiddled endlessly with NFS block sizes but that gave nothing. We were confused. Certainly we had expected a performance difference between running our software in a VM compared to running on the metal, but that it could be as much as 10X was a wake-up call.

At this point we realized that no amount of tweaking was likely to get  our new sqlite3 version out of its performance hole. The raw performance just wasn’t there. We suspected at least part of the problem was that we were running FreeBSD guests in VMware. We checked that we were using the right network card driver (yes we were). We checked the OS version – 7.1, yep that one was supposedly the best you could get for VMware. We tuned various sysctl values according to guides we found online. Nothing helped.

Read the whole article (playingwithwire.com – 01/06/2009)

NetCraft Communications announces Versiera 3.0

NetCraft Communications has announced the availability of Versiera 3.0

Versiera is a monitoring and management system supporting a wide range of open source and commercial platforms including Linux, FreeBSD, OpenBSD, NetBSD, OS X, Solaris and Windows.

Included in Versiera 3.0 is support for amd64 platform for FreeBSD, OpenBSD and NetBSD. Additional feature highlights are in the press release.

Announcement: prweb.com

Thanks Frank for contacting me. If you have a (new) FreeBSD related product or service, you’re welcome to contact me and I’ll mention it on this blog.

China chooses FreeBSD as basis for secure OS

report by the Washington Post claims China is equipping all of its government and military PCs with a version of the Kylin operating system to make hacking attempts by foreign intelligence services more difficult. The information about the highly secure operating system was made public during a US China Economic and Security Review Commission hearing in late April. In addition to the secure operating system, the computers will also contain a special microprocessor to prevent attacks.

This security-focused and hardened Kylin is based on FreeBSD:

The Kylin (Chinese page link) operating system was developed by China’s University of Science and Technology for National Defence, and although it appears the system is claimed to be proprietary, an analysis of the code(Chinese page link) in the kernel indicates that it is in fact a hardened version of FreeBSD 5.3.

Source: H Online

The Locking Infrastructure in the FreeBSD kernel

The presentation at AsiaBSDCon 2009 is focused on explaining theoretical approaches and pratical aspect of the locking support in the FreeBSD kernel. The locking KPI as well as underlying mechanisms and interactions with the scheduler will be analized and discussed deeply. Typical locking strategies and some edge cases will also be shown along with a detailed explanation about how to debug locking problems (deadlocks and races primirally).

PDF version – Direct video 1 2

Isolating Cluster Users for Performance and Predictability

At The Aerospace Corporation, we run a large FreeBSD based computing cluster to support engineering applications. These applications come in all shapes, sizes, and qualities of implementation. To support them and our diverse userbase we have been searching for ways to isolate jobs from one another in ways that are more effective than Unix time sharing and more fine grained than allocating whole nodes to jobs. In this paper we discuss the problem space and our efforts so far. These efforts include implementation of partial file systems virtualization and CPU isolation using CPU sets.

This presentation was held at AsiaBSDCon 2009.

PDF SummaryDirect video link

Mohamad Dikshie Fauzie: FreeBSD and SOI-Asia Project

In this paper we describe usage of FreeBSD operating system for IPv6 Multicast routing platform in SOI-Asia Project. SOI-Asia project is platform to deliver realtime lecture via UniDirectional Link of satellite to several countries in Asia. Because of limited bandwidth in satellite, we use IPv6 multicast to deliver material of lecture and realtime video and audio lecture. We also describe human resources development of operational aspect of the project in several countries in Asia.

This presentation was done at AsiaBSDCon 2009

PDF summaryDirect link

Mail system for distributed network – A. Zakharchenko

Mail system for distributed network. Presentation held by Andrey Zakharchenko at AsiaBSDCon2009:

Sometimes it is necessary to organize a mail domain for large and geographically distributed network, which may consist of independent subnets with their own separate Internet connections (and some of those connections may be not very good, or not very fast, or not very cheap). But users of the network need mail system, and it should be fast, convenient, and reliable.

In this paper some ways of distributed mail domain implementation are discussed, and a new one is introduced. The new method allows us to implement distributed mail system fast and convenient for end users, convenient for administrators, using network traffic sparingly, and reliable enough (at least without single point of failure).

PDF of presentation

Direct link