Huanle Han <hanxue...@gmail.com> writes:
> I'm thinking about this quesion, after experience the dpdk feature in ovs.
> Could you give me some answer?
I'll take a stab at it.
> Currently, netdev datapath(or called dpdk) is implemented inside daemon
> process "ovs-vswitchd".
> It makes ovs-vswitchd not that stable as before:
> 1. some ovsbd config for dpdk requires restart ovs-vswitchd.
That's a limitation of the library, and one that we want to fix.
Note also that Daniele has proposed a change to allow -enabling- dpdk
after startup. I'm currently reviewing that series.
> 2. sometimes dpdk fails to init and aborts process because of inappropriate
Yep. There's ongoing work in dpdk upstream to rectify this situation,
though (I think?)
> 3. dpdk lib crash bug.
I don't think bugs aren an argument in this case. We find them and fix
them, that's that. Otherwise, bubble-sort might be implemented in it's
own process ;)
> These suitation seriously effect the forwarding of other datapath(system).
> Is it possibale that netdev datapath is implemented in a new process, and
> connects witch ovs-vswitchd using IPC?
> If possibale, what the main difficulty might be?
If you think it's a worthwhile effort, go ahead and submit patches.
It's easy to dismiss an idea out-of-hand if it's just an idea.
If you have code that can provide this feature, and submit it, it will
be looked at.
I haven't thought of any such benefits. I could be wrong.
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