Language Selection

English French German Italian Portuguese Spanish

The Tests Showing Ubuntu 11.04 On A Power Consumption Binge

Filed under
Ubuntu

Though as the Phoronix Test Suite stack is presently bisecting and analyzing the kernel during the period in question (Linux 2.6.37 to 2.6.38), this article is being published now and hopefully on Easter Sunday or Monday the actual offending commit will be known along with much more information. This bug has also now been confirmed independent of Phoronix by at least six separate parties that I'm aware of, with reports of Natty either consuming excessive power or a very significant increase in heat output compared to Ubuntu 10.10. These independent reports have occurred on a range of hardware -- including desktops. There is also at least one bug report on the matter for Ubuntu 11.04.

Ubuntu 11.04 "Natty Narwhal" is set to be released on Thursday and while there are a number of new features to talk about in this latest release, the Phoronix Test Suite software has been busy analyzing the performance of this latest release. There is open-source graphics driver improvements leading to some performance improvements (such as Radeon KMS page-flipping), the famous ~200 line Linux kernel patch to improve responsiveness, and various other enhancements that catch our fancy in Ubuntu 11.04. However, one area where there is a frightening regression in Ubuntu 11.04 is with its power consumption. For mobile devices in many workloads, Ubuntu 11.04 is consuming noticeably more power than in any of the past Ubuntu Linux releases. Sadly, no one seems to have noticed in time since continuous integration testing on Linux seems to happen so haphazardly right now.

rest here




More in Tux Machines

Opera Data Breach, Security of Personal Data

  • Opera User? Your Stored Passwords May Have Been Stolen
    Barely a week passes without another well-known web company suffering a data breach or hack of some kind. This week it is Opera’s turn. Opera Software, the company behind the web-browser and recently sold to a Chinese consortium for $600 million, reported a ‘server breach incident’ on its blog this weekend.
  • When it comes to protecting personal data, security gurus make their own rules
    Marcin Kleczynski, CEO of a company devoted to protecting people from hackers, has safeguarded his Twitter account with a 14-character password and by turning on two-factor authentication, an extra precaution in case that password is cracked. But Cooper Quintin, a security researcher and chief technologist at the Electronic Frontier Foundation, doesn’t bother running an anti-virus program on his computer. And Bruce Schneier? The prominent cryptography expert and chief technology officer of IBM-owned security company Resilient Systems, won’t even risk talking about what he does to secure his devices and data.

Android Leftovers

FOSS and Linux Events

  • On speaking at community conferences
    Many people reading this have already suffered me talking to them about Prometheus. In personal conversation, or in the talks I gave at DebConf15 in Heidelberg, the Debian SunCamp in Lloret de Mar, BRMlab in Prague, and even at a talk on a different topic at the RABS in Cluj-Napoca.
  • TPM Microconference Accepted into LPC 2016
    Although trusted platform modules (TPMs) have been the subject of some controversy over the years, it is quite likely that they have important roles to play in preventing firmware-based attacks, protecting user keys, and so on. However, some work is required to enable TPMs to successfully play these roles, including getting TPM support into bootloaders, securely distributing known-good hashes, and providing robust and repeatable handling of upgrades. In short, given the ever-more-hostile environments that our systems must operate in, it seems quite likely that much help will be needed, including from TPMs. For more details, see the TPM Microconference wiki page.
  • More translations added to the SFD countdown
    Software Freedom Day is celebrated all around the world and as usual our community helps us to provide marketing materials in their specific languages. While the wiki is rather simple to translate, the Countdown remains a bit more complicated and time consuming to localize. One needs to edit the SVG file and generate roughly a 100 pictures, then upload them to the wiki. Still this doesn’t scare the SFD teams around the world and we are happy to announce three more languages are ready to be used: French, Chinese and German!

Second FreeBSD 11.0 Release Candidate Restores Support for 'nat global' in IPFW

Glen Barber from the FreeBSD project announced the availability of the second RC (Release Candidate) development build of the upcoming FreeBSD 11.0 operating system. Read more