I believe this is still present in 16.04. Specifically I become CPU bottlenecked (100% on one core by /usr/lib/apt/methods/http) when downloading packages within AWS EC2 instances (better bandwidth with download servers there). Besides the issues around locking up a core, this makes several processes take noticeably more time than they should.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1123272 Title: high cpu usage on download (not optimised SHA256, SHA512, SHA1) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1123272/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs