On Linux, you have a plethora of File Systems available.
Recently I was testing databases (MySQL, MariaDB) especially with ThreadPool against a Violin Flash Memory Array, and I forgot what file system the LUN was mounted (and formatted) as.
There are two ways to find out:
I’m leaving myself some room for bug fixes. It works for us in house. I would love to help others to give it a try. especially those who could benefit from making nearly immediately answered queries to the NIST’s NVD database.
The code in this release cannot by itself track the feed from the feds in real time. The nvd entry loader needs a little bit of love in the area of record merging before this starts working. It’s on my TODO list.
I’m sorry for the outage of git.colliertech.org. I’ll get that back up here shortly. In the meantime, feel free to grab it from this location while the CPAN indexes and processes my submission.
http://www.colliertech.org/federal/NIST/NIST-NVD-1.00.00.tar.bz2
don’t forget to check the cryptographic signature:
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[Read more]A new company often means new responsibilities and learning new ways of doing things. For a tech guy, it often means picking up a new framework or maybe if you are a glutton for punishment, a new language. I recently switched OSes, languages, and databases as a DBA/DB Developer. This was quite a massive shift for me. I went from the stable, enterprise database, SQL Server, to the little engine that could, MySQL. Before the switch, I would stew over the fact that SQL Server lacked features in comparison to Oracle or Postgres, but now I realize that there are far better things to worry about (such as non-blocking backups). I just wanted to go over some of the differences I found.
I learned how to use a computer on DOS and Windows. My first programming projects were written in QBASIC and my first Web applications were written in VB using ASP on Windows 2000. The first job where I made decent money was developing a SQL Server-based application. I bought my first car, an engagement ring, and a honeymoon with money from making software on Windows. Needless to say, I found a lot of intellectual and financial fulfillment from Windows over the years.
That first real job also allowed me flexibility in what technology I could employ, and I helped implement a features using Redis on top of Ubuntu. This was a fun time, because my company basically paid me to study a new technology and to gain experience using it. On my own, I began to use Linux and to embrace open-source ideas, one of which is that the consumer is also the producer. I changed my mindset about what it means to use software: for open-source projects, it often …
[Read more]With the rapid advancement in the database technologies, the legacy systems are either being upgraded or they are being replaced or in some cases technologists are finding ways to support them in new ways showing us the flexible nature of databases and the belief of professionals that the sky is the limit. For this Log [...]
Retrouvez SkySQL et ses partenaires sur le stand C21 du Salon Solutions Linux 2012 au CNIT à Paris du 19 au 21 juin
Cette année, le Salon Solutions Linux à Paris coincide avec la Fête de la Musique. C’est donc avec enthousiasme que nous nous préparons pour cet évènement annuel incontournable dédié aux logiciels libres et à l’Open Source.
Do the operating systems kill your MySQL instances from time to time? Are some database servers swapping constantly? These are relatively common problems. Why? How to prevent them?
Memory allocation
When a running program needs some additional memory, it can typically allocate it dynamically with malloc() function. It finds an unused continuous block that is at least as large as the requested size, reserves as much as it needs, and returns a pointer to that space. No initialization of the memory contents is performed at the time. When malloc() returns NULL instead of a valid address, it is an information to the calling program that there wasn’t enough memory available and the call has failed to allocate anything. In such cases applications typically take appropriate actions to notify users about the problem and terminate some of their activity or completely shut down.
In Linux it can be a little bit …
[Read more]SSH tunnels provide a very effective means to access remote services and applications. Not only does it provide encryption of data between hosts, but it allows you to route connections between a sequence of servers, thus chaining connections. A common use of this method is to provide encrypted connections to MySQL servers so that user accounts can be limited to only “localhost” privileges, yet accessed from remote workstations without having to run MySQL+SSL.
The concept is simple, for example let’s say you have three servers: localhost (your workstation in America), a server in Europe, and a server in Japan. You want to access Apache running on port 80 on the Japan server but because of firewall restrictions you cannot access port 80 remotely, and to make things more difficult the Japan server only allows SSH connections from the Europe server’s IP. We can solve this by creating a SSH tunnel that forwards localhost port 8080 …
[Read more]A special extended edition of Tech Messages for 2011-09-21 through 2012-05-11:
Recent news that Microsoft and Barnes & Noble agreed to partner on the Nook e-reader line rather than keep fighting over intellectual property suggests the prospect of more settlement and fewer IP suits in the industry. However, the deal further obscures the blurry IP and patent landscape currently impacting both enterprise IT and consumer technology.
It is good to see settlement — something I’ve been calling for, while also warning against patent and IP aggression. However, this settlment comes from the one conflict in this ongoing war that was actually shedding some light on the matter, rather than further complicating it.
See the full article at TechNewsWorld.