** Also affects: simplestreams (Ubuntu Xenial) Importance: Undecided Status: New
-- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1580534 Title: Signature verification is too slow Status in simplestreams: New Status in simplestreams package in Ubuntu: New Status in simplestreams source package in Xenial: New Bug description: When running against http://cloud- images.ubuntu.com/releases/streams/v1/com.ubuntu.cloud:released:download.sjson, read_signed() in simplestreams/utils.py seems to take minutes (402 seconds in my instrumented timing) running 100% CPU. At the time of my test, download.sjson is 451737 bytes in 1870 lines. This makes a uvtool sync virtually unusable on Xenial. The culprit is the constant += of a string as it is read in. This is inefficient in Python as each += results in a new string that has to be allocated. Keeping the lines in a list and joining them at the end reduces the time to 0.127 seconds. Merge proposal to follow. I'm filing this bug to track a Xenial SRU. To manage notifications about this bug go to: https://bugs.launchpad.net/simplestreams/+bug/1580534/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp