Feeds

Purdue researchers add ‘wakelock’ cleanup to phone power research

Fixing the ‘no-sleep’ bug

  • alert
  • submit to reddit

Internet Security Threat Report 2014

The Purdue University team which in March published a paper identifying how rogue apps and user-tracking can sap Android batteries has followed up with research into detecting and fixing the “wakelock” bugs.

The new study is to be presented at the MobiSys conference in the UK later this month. The researchers have extended their profiling to cover 187 apps, and found that 42 of them – more than 22 percent – had some kind of wakelock bug.

The problem is simple, says Purdue professor of electrical engineering Charlie Hu: programmers are human, and make mistakes. In juggling the various APIs they need to access to wake the phone up – for example, to receive an incoming call when the phone is asleep, or to check e-mail – they can leave the phone awake after the activity and drain the battery.

The Purdue group’s previous research identified bugs in newsreader apps, advertising tracking, and even the free version of Angry Birds (which devoted one-third of its unnecessary power consumption to GPS tracking). As noted at the time, I/O is a power hog and is often badly-handled by app developers.

Hu’s group uses a modified compiler to identify no-sleep bugs in software, and claims they can identify most, if not all, such bugs. ®

Intelligent flash storage arrays

More from The Register

next story
You really need to do some tech support for Aunty Agnes
Free anti-virus software, expires, stops updating and p0wns the world
Privacy bods offer GOV SPY VICTIMS a FREE SPYWARE SNIFFER
Looks for gov malware that evades most antivirus
Patch NOW! Microsoft slings emergency bug fix at Windows admins
Vulnerability promotes lusers to domain overlords ... oops
Oi, Europe! Tell US feds to GTFO of our servers, say Microsoft and pals
By writing a really angry letter about how it's harming our cloud business, ta
HACKERS can DELETE SURVEILLANCE DVRS remotely – report
Hikvision devices wide open to hacking, claim securobods
prev story

Whitepapers

Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
5 critical considerations for enterprise cloud backup
Key considerations when evaluating cloud backup solutions to ensure adequate protection security and availability of enterprise data.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Business security measures using SSL
Examines the major types of threats to information security that businesses face today and the techniques for mitigating those threats.