d64c43773a
When vhost-user connects qemu successfully, dpdk will call the vhost_user_add_connection to add unix socket fd to poll. And fdset_add only set the socket fd to a fdentry while poll may sleep now. In a general case, this is no problem. But if we use hot update for vhost-user, most downtime of VMs network is 750+ms. This patch adds pipe event, so after connections are ok, dpdk rebuild the poll immediately. With this patch, the most downtime is 20~30ms. Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
DPDK is a set of libraries and drivers for fast packet processing. It supports many processor architectures and both FreeBSD and Linux. The DPDK uses the Open Source BSD-3-Clause license for the core libraries and drivers. The kernel components are GPL-2.0 licensed. Please check the doc directory for release notes, API documentation, and sample application information. For questions and usage discussions, subscribe to: users@dpdk.org Report bugs and issues to the development mailing list: dev@dpdk.org