segunda-feira, janeiro 23, 2006

TimerTop screenshot

Timertop running on a x86 machine. Whe can see the PID of the process, the frequency of functions programmed in timers in this process, the counting and the function programmed to run after that timer expires with its address.

terça-feira, janeiro 17, 2006

Timertop-patch Update

The Dyn-tick patch is now integrated in the Con Kolivas kernel tree which is aimed to "improve system responsiveness and interactivity".
The timertop kernel patch was integrated in the dyn-tick patch by Con in the beginning of december/2005 and can be downloaded in the same site as the utility:

As Con stated he is unable to improve smp issues in the dyn-tick patch and is not receiving enough colaboration in this subject. So dyn-tick has not entered mm tree yet, although it seems that everyone that tests it (or at least send a feed back to LKML) is having some power savings. They are usually not so high (~1- 5 W, 5-10%) but nevertheless should justify its integration in the mainline. The problem now is the smp.
I hope that someone grab this work and make the necessary modifications and make it go mm than mainline.

Timertop-Util Update

Hey, this site is quite outdated regarding Timertop. To summary, Timertop already has a C version, since end of November/2005 and now it is much faster and robust than the earlier perl version. It is hosted by Con Kolivas who is the maintainer of the dyn-tick patch currently.
It can be downloaded from Con Kolivas site:

Efcharisto Con!

segunda-feira, janeiro 09, 2006

Port of Manaus II

Right now - hey, this reminds me that Van Halen song - is 30+ degrees Celcius 9/1/06 5pm. Definitely very warm, even inside home, felling that very-lazyness-like sensation and some weak headache. Even after 5 years here this still happens if I stay whole day without conditioned air... wonder when this is gonna to end...

Here we can see the amount of water that may rise in the Negro River in the flood season. We are now (january) leaving the dry season, the river starts to rise with the rains, Andes meltings and some other natural phonomena. The marks in this wall are points where the river reached in past years. Unfortunately we see some garbage (plastic bottles) floating. The highest mark is year 1953 followed closely by year 1976. The difference between highest levels and current river level is more than 5m.

Port of Manaus

Here we have a view from the new (more than one year) port of Manaus. Some typical regional boats.

sexta-feira, janeiro 06, 2006

A day at vacations

New year started in a short vacation, great to visit some known places in Manaus once I haven't been to somewhere else in these days.
In Brasil is not so common to see the sun seting in the water. Most of the beaches are in the Atlantic ocean so they always see the dawning of the day. Remarkable exception is Salvador-BA where there is a bay and you can see the sunset in the sea, good days at "Farol da Barra"...
On the other hand, the rivers offers us this landscape plentifully, and one of the best examples is the astonishing Negro River in Manaus, Amazonas.
Unfortunately we have to chose carefully the framing because some big hotel companies thinks they owes wonderful natural landscapes but we found a way to avoid this from the photos.
Well here we have what was happening at Ponta Negra at january, 6 of 2006 at 18:06h.