Archives for Nfs
![SNIA SpeedConf and Las Vegas image-3010](wp-content/uploads/The-Venetian-Resort-Hotel-Casino.jpg)
![SNIA SpeedConf and Las Vegas image-3010](wp-content/uploads/The-Venetian-Resort-Hotel-Casino.jpg)
Hi, last year was a busy one, but just because we worked in really cool projects and was very, very exciting!
I should be at Las Vegas from May 05-09, and in Santa Clara from Jun 10-12. In Santa Clara I will be presenting one of the solutions we developed last ...
![Parceria… image-2891](wp-content/uploads/Screen-Shot-2013-01-31-at-10.44.49.png)
![Parceria… image-2891](wp-content/uploads/Screen-Shot-2013-01-31-at-10.44.49.png)
Marcelo Leal, arquiteto da Locaweb, empresa especializada em web hosting e serviços de cloud computing, comenta a atuação da Itautec, que forneceu uma solução customizada de servidores para a companhia. Esta solução permitiu à empresa dobrar a densidade de armazenamento em seu datacenter, com custos competitivos. É mais uma demonstração ...
DNLC is something that did create a lot of discussions on ZFS mailing list, and is one of that parts that ZFS did not changed, and (at least for me) a ghost. Let me try to explain...
ZFS dynamics are totally different from many parts of the other ...
I think there is a misunderstanding regarding the protocols and NFS options while using it over TCP.
As the NFS is an old protocol, and used to UDP, when the implementations did change the default transport to TCP, the features from one were mixed to the other in some interpretations.
Well, ...
1 - But limits are things that we need to respect in life;
2 - If you have U$10K and do not know how to handle it, U$10M is not the answer for you. Because one cent is overflow in both cases;
3 - That is the same for computer resources;
4 - ...
![Fake… image-2285](wp-content/uploads/post-nmt2-300x226.jpg)
![Fake… image-2285](wp-content/uploads/post-nmt2-300x226.jpg)
That was a simple but nice one... i did see a huge write performance on one of our storages.
Take a look at this slog device (SSD):
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 10494.5 ...
![Performance II image-1997](wp-content/uploads/watertowine1-300x300.jpg)
![Performance II image-1997](wp-content/uploads/watertowine1-300x300.jpg)
In my last post about 'Performance', i did talk about a ZFS tuning parameter: zfs_prefetch_disable. And that was a ZFS read parameter...
In this post, we will take a look in another one, with the same 'water to wine' effect. This time with focus on writes...
We have a set ...
These days i was working to understand a workload: random, many small files (e.g: web servers), running on NFS/ZFS environment.
Interesting to see that the discs were really busy, a very heavy random workload, but a few NFS reads and writes requests. On top of it, an idle SSD as a ...
![OpenSolaris events @SF 2009 image-1214](pictures/opensolaris/california.jpg)
![OpenSolaris events @SF 2009 image-1214](pictures/opensolaris/california.jpg)
That was an amazing experience, and was really great meet those people that i just talk by email. First was the OHAC Summit, where we had excellent presentations, and the keynote 'The Network is the Cluster' by Dr. David Cheriton (Stanford University), and the 'High Availability: Today and Tomorrow' discussion ...
![NFS – Block Size Monitor (v0.3) image-970](pictures/opensolaris/nmtv03.jpg)
![NFS – Block Size Monitor (v0.3) image-970](pictures/opensolaris/nmtv03.jpg)
Ok, now i did some 'clean up' on the code... did create some functions, have removed duplicated code, and add new features like 'Requests per second'. Now i think is just fix any bugs that we will find, but the features for this particular tool are done.
Take a look:
FEATURES:
...