RE: [PATCH 0/3] Bypass specific network traffic in COLO

["Zhang, Chen" <chen.zhang@intel.com>]

> -----Original Message-----
> From: Dr. David Alan Gilbert <dgilbert@redhat.com>
> Sent: Monday, January 4, 2021 9:07 PM
> To: Zhang, Chen <chen.zhang@intel.com>
> Cc: Jason Wang <jasowang@redhat.com>; qemu-dev <qemu-
> devel@nongnu.org>; Eric Blake <eblake@redhat.com>; Markus Armbruster
> <armbru@redhat.com>; Zhang Chen <zhangckid@gmail.com>
> Subject: Re: [PATCH 0/3] Bypass specific network traffic in COLO
> 
> * Zhang Chen (chen.zhang@intel.com) wrote:
> > From: Zhang Chen <chen.zhang@intel.com>
> >
> > Since the real user scenario does not need to monitor all traffic.
> 
> Can you explain the type of real user case where they only need to compare
> some connections?

Sure.
For example, windows guest user want to enable windows remote desktop to touch guest(UDP/TCP 3389),
This case use UDP and TCP mixed, and the tcp part payload always different caused by real desktop display data(for guest time/ mouse display....).
Another case is some real user application will actively transmit information include guest time part,  primary guest send data with time 10:01.000,
At the same time secondary guest send data with time 10:01.001, it will always trigger COLO checkpoint to drop guest performance.

Thanks
Chen


> 
> Dave
> 
> > This series give user ability to bypass kinds of network stream.
> >
> > Zhang Chen (3):
> >   qapi/net: Add new QMP command for COLO passthrough
> >   hmp-commands: Add new HMP command for COLO passthrough
> >   net/colo-compare: Add handler for passthrough connection
> >
> >  hmp-commands.hx       | 26 +++++++++++++++++++++++
> >  include/monitor/hmp.h |  2 ++
> >  monitor/hmp-cmds.c    | 20 ++++++++++++++++++
> >  net/colo-compare.c    | 49
> +++++++++++++++++++++++++++++++++++++++++++
> >  net/colo-compare.h    |  2 ++
> >  net/net.c             | 39 ++++++++++++++++++++++++++++++++++
> >  qapi/net.json         | 46
> ++++++++++++++++++++++++++++++++++++++++
> >  7 files changed, 184 insertions(+)
> >
> > --
> > 2.17.1
> >
> --
> Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK