Re: Optimizing large BGP -> Linux kernel additions/removals

2015-08-18 Thread Ondrej Zajicek
On Mon, Aug 17, 2015 at 03:41:00PM -0700, Matthew Walster wrote: > When a BGP sessions comes up/down, there is a period of high CPU while all > the new best-routes are computed -- this is understandable. > > However, on boxes I have where this table is then promoted to the Linux > kernel, the CPU

Optimizing large BGP -> Linux kernel additions/removals

2015-08-17 Thread Matthew Walster
When a BGP sessions comes up/down, there is a period of high CPU while all the new best-routes are computed -- this is understandable. However, on boxes I have where this table is then promoted to the Linux kernel, the CPU usage stays high for some considerable time. For a full (~600,000 prefix)