Performance impact of the new mtmalloc memory allocator

I wrote at a number of occasions (here or here), that it could be really beneficial to use a different memory allocator for highly-threaded workloads, as the standard allocator is...

Oracle Solaris 11 Cheatsheet

In the last few days i created a cheat sheet for Solaris 11 … while it’s still a work in progress (it will be surely longer in the future). it’s...

How to show off live migration with a SPARC system?

Yesterday i had the opportunity to show Oracle VM for SPARC in front of customers in action. Not a single slide was used … Everything was live ;) . The...

Cheatsheet for configuring a new nodename in Solaris 11

In Solaris 11 the file /etc/nodename is gone. In order to change you nodename you have alter the configuration of an smf service: root@fuchikoma:/home/jmoekamp# hostname tachikoma root@fuchikoma:/home/jmoekamp# svccfg -s svc:/system/identity:node...

Cheatsheet for configuring the networking in Solaris 11

There are quite a number of changes in the procedures to configure some of the networking parameters. Many things have changed, that were just editing of a file in the...

Being relaxed in regard of retention

Robin Harris of StorageMojo pointed to an interesting research paper: “Optimizing NAND Flash-Based SSDs via Retention Relaxation”. The idea of the method described in that paper is basically: The physics...

Using encrypted lofi devices for backup

My colleague Constantin wrote a nice article about using encrypted loopback file based pools for backup purposes for example. And don’t forget you can do deduplication or snapshots as well...

More than this

I had many interesting discussions in the last few days. However some of them gave me the impression that i should explain one thing. I want to use one example...

Solaris 11 in Common Criteria evaluation

As i got the question on the Solaris 11 Techdays: As reported by the Oracle Tech Network Solaris 11 is now in evaluation under the Operating System Protection Profile using...

Veranstaltungshinweis für Düsseldorf

Ich möchte noch mal einen Veranstaltungshinweise loswerden. Mein Kollege Michael Faerber organisiert für den 8.3 ein Oracle Breakfast in Düsseldorf. Das ist quasi “Vorträge mit Mampf”. Zwei Vorträge sind für...

So far ...

It’s a few days since the event in Munich, the last one in the series in Germany. The last two weeks were really cool. There were many many people at...

Less known Solaris 11 features: Shadow Migration

In the ZFS Storage Appliance we have little nice feature enabling you to do migrations of data in the background. It’s called Shadow Migration. It’s a really useful feature. Imagine...

Oracle Solaris 11 Techday Düsseldorf geschafft ...

… bleiben noch sechs Veranstaltungen (man kann sich noch anmelden). Der Event in Düsseldorf war schon mal ein guter Auftakt. Viele Leute da, viele Fragen gehabt in den Kaffeepausen. Morgen...

Reminder: Oracle Solaris 11 Techdays 2012

Ich möchte nochmal auf die nächste Woche startende Veranstaltungsreihe zum Thema Solaris 11 hinweisen. Es gibt zwar schon viele Anmeldungen aber ich will “die Hütte voll sehen” ;). Mehr Informationen...

Oracle Solaris 11 Tech Days 2012

Im Februar läuft eine Reihe von Events in Deutschland und der Schweiz zum Thema Solaris 11. Die Events versprechen technisch sehr interessant werden, da die Sprecher jeweils sehr tief in...

Tracing ZFS

Brendan Gregg wrote a really interesting article about tracing ZFS: Activity of the ZFS ARC. Really worth a read.

Extermination

Buffer Extermination? WTF? Normally i’m seeing wait events like “buffer busy”, “log sync” or “db file sequential read” when doing my research in Oracle installation in Top5 events when i’m...

Y13.0.0.0.0 problem

Okay … it’s 2012 … and according to some people the world will end this year. However what’s really happening? It’s the mayan version of the Y2038 problem. While the...

2011 ... i will not miss you

The year almost over. As usual at this time i’m finalizing my tax declaration at the moment. But nevertheless i wanted to write a short article about the last year....

Simulating the cloud - a practical example.

Work in Progress - this entry will change often in the next days and weeks A few days\^H\^H\^H\^Hweeks ago, i wrote about simulating the cloud that is most often tagged...