Translations:ReleaseNotes/Liberty/20/en

Performance Considerations

• The stock Trusty Tahr kernel (3.13) shows linear performance degradation when running "ip netns exec" as the number of namespaces increases. In cases where scale is important, a later version kernel (e.g. 3.19) should be used. [WHICH VERSION OF 3.13 EXHIBITED THIS. MOST VERSIONS WILL HAVE THIS FIX ALREADY.]

Note: This regression should be fixed in Trusty Thar since 3.13.0-36.63 and later kernel versions. For further references see: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1328088