For anyone else hit by this, the fix still requires you to turn it on. echo "Set probe_interfaces false" | sudo tee -a /etc/sudo.conf
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to sudo in Ubuntu. https://bugs.launchpad.net/bugs/1272414 Title: extremely slow sudo with many network interfaces due to slow getifaddrs() syscall perf Status in sudo package in Ubuntu: Fix Released Status in sudo source package in Precise: New Bug description: Sudo performance degrades when many network interfaces exist. This is due to a slow getifaddrs() syscall performance on linux. Upsteam has added the ability to disable the checking the network interfaces with a runtime option in version 1.8.10 with commit http://www.sudo.ws/repos/sudo/rev/e9dc28c7db60. Upstream discussion: http://www.sudo.ws/pipermail/sudo-workers/2014-January/000826.html This is on Ubuntu 12.04 w/ Sudo 1.8.3p1-1ubuntu3.4. The fix does need to land on trusty before it can be SRUed. [Impact] Test case results: w/ sudo: At the end of the test per the real time per sudo command is as high as .16 and takes almost 13 minutes. w/ root: At the end of the test the real time per command is .02/.03 and takes about 7 minutes total. [Test Case] #!/bin/bash SUDO=sudo for i in `seq 1 $1` do j=`printf %.4d $i` $SUDO ip netns add bar${j} $SUDO ip netns exec bar${j} ip link set lo up $SUDO ip netns exec bar${j} sysctl -w net.ipv4.ip_forward=1 > /dev/null $SUDO ip link add qroutside${j} type veth peer name qrinside${j} netns bar${j} /usr/bin/time -f "%e" $SUDO ip link add qgoutside${j} type veth peer name qginside${j} netns bar${j} done echo Created $j 1. Run with argument 2000. 2. Reboot 3. Change line to SUDO= and then run as root still with argument 2000. [Regression Potential] This is adding one runtime variable, that was previously only a compile time variable. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/1272414/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
