Leaving an iTunes Store page open in iTunes can kill your laptop battery

“If you use a laptop, and your battery dies quickly, check and see if you accidentally left iTunes open on an iTunes Store page,” Kirk McElhearn reports for Kirkville.

“Together, iTunes and coreaudiod,” McElhearn reports, “which processes audio played by iTunes or other apps, use about 7% of CPU.”

More info and screenshots in the full article here.

MacDailyNews Take: Yes, if you’re going to leave iTunes open, leave it on a page (tab) other than the iTunes Store or “New,” both of which have that battery-consuming rotating banner.


    1. We’re kind of OT, but I find using a ‘reverse firewall’ to be very useful. Intego sells NetBarrier, which works well. But I prefer Little Snitch. Why it’s useful:

      – If your Mac somehow gets botted, the bot can’t communicate with the bot wrangler without your specific permission, making the bot inert.
      – SEVERAL application phone home Google Analytics without bothering to tell you. (I have a list for those interested). That’s not good. Reverse firewalls kill that dead unless you approve it.
      – [Insert further reasons to stop applications from phoning home HERE…]
      – When some obscure process is asking to phone out to gawd-knows-where, the reverse firewall can help you figure out exactly WHERE it wants to send data. Sometimes you need to user WHOIS to look up an IP address, but at least you can know the IP address.

      And so forth.

      NOTE: The learning / tolerance curve for reverse firewalls can be annoying. But I got used to it to the point of not minding at all. Just be sure you don’t get sick of the notifications and approve them automatically. That defeats the point of reverse firewalls.

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