Event Channels are Xen's mechanism for paravirtualized interrupts. These were limited to only 4096 which then limits the number of guests that a host may support to around 300 to 500. This presentation will give a brief introduction to event channels, a detailed look at the new, innovative FIFO-based event channel ABI that increases the limit to over 100,000 as well as having several other useful features (e.g., multiple priorties). Some of the key performance measurments of the new ABI will be shown.
David Vrabel is a member of the XenServer Engineering team at Citrix and spends most of his time on Linux kernel and Xen development. He is also a co-maintainer for the Xen (x86) subsystem in the Linux kernel.
Attendance numbers do not account for private attendees. Get there early!