Hi Sudhir,
Is your issue resolved?
Actually we are facing same issue on vpp.2106.
In our case "api-rx-ring" is not getting called.
in our usecase workers are calling some functions in main-thread context
leading to RPC message and memory is allocated from api section.
This leads to Api-segment memory is used fully and leads to crash.
Thanks,
Chetan
On Mon, Feb 20, 2023, 18:24 Sudhir CR via lists.fd.io <sudhir=
rtbrick....@lists.fd.io> wrote:
> Hi Dave,
> Thank you very much for your inputs. I will try this out and get back to
> you with the results.
>
> Regards,
> Sudhir
>
> On Mon, Feb 20, 2023 at 6:01 PM Dave Barach <v...@barachs.net> wrote:
>
>> Please try something like this, to eliminate the possibility that some
>> bit of code is sending this process an event. It’s not a good idea to skip
>> the vec_reset_length (event_data) step.
>>
>>
>>
>> while (1)
>>
>> {
>>
>> uword event_type, * event_data = 0;
>>
>> int i;
>>
>>
>>
>> vlib_process_wait_for_event_or_clock (vm, 1e-2 /* 10 ms */);
>>
>>
>>
>> event_type = vlib_process_get_events (vm, &event_data);
>>
>>
>>
>> switch (event_type) {
>>
>> case ~0: /* handle timer expirations */
>>
>> rtb_event_loop_run_once ();
>>
>> break;
>>
>>
>>
>> default: /* bug! */
>>
>> ASSERT (0);
>>
>> }
>>
>>
>>
>> vec_reset_length(event_data);
>>
>> }
>>
>>
>>
>> *From:* vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> *On Behalf Of *Sudhir
>> CR via lists.fd.io
>> *Sent:* Monday, February 20, 2023 4:02 AM
>> *To:* vpp-dev@lists.fd.io
>> *Subject:* Re: [vpp-dev] process node suspended indefinitely
>>
>>
>>
>> Hi Dave,
>> Thank you for your response and help.
>>
>>
>>
>> Please find the additional details below.
>>
>> VPP Version *21.10*
>>
>>
>> We are creating a process node* rtb-vpp-epoll-process *to handle control
>> plane events like interface add/delete, route add/delete.
>> This process node waits for *10ms* of time (Not Interested in any events
>> ) once 10ms is expired it will process control plane events mentioned above.
>>
>> code snippet looks like below
>>
>>
>>
>> ```
>>
>> static uword
>> rtb_vpp_epoll_process (vlib_main_t *vm,
>> vlib_node_runtime_t *rt,
>> vlib_frame_t *f)
>> {
>>
>> ...
>> ...
>> while (1) {
>> vlib_process_wait_for_event_or_clock (vm, 10e-3);
>> vlib_process_get_events (vm, NULL);
>>
>> rtb_event_loop_run_once(); *<---- controlplane events handling*
>>
>> }
>> }
>> ```
>>
>> What we observed is that sometimes (when there is a high controlplane
>> load like request to install more routes) "rtb-vpp-epoll-process" is
>> suspended and not scheduled furever. this we found by using "show runtime
>> rtb-vpp-epoll-process"* (*in "show runtime rtb-vpp-epoll-process"
>> command output suspends counter is not incrementing.)
>>
>> *show runtime output in working case :*
>>
>>
>> ```
>> DBGvpp# show runtime rtb-vpp-epoll-process
>> Name State Calls Vectors
>> *Suspends* Clocks Vectors/Call
>> rtb-vpp-epoll-process any wait 0
>> 0 *192246* 1.91e6 0.00
>> DBGvpp#
>>
>> DBGvpp# show runtime rtb-vpp-epoll-process
>> Name State Calls Vectors
>> *Suspends* Clocks Vectors/Call
>> rtb-vpp-epoll-process any wait 0
>> 0 *193634* 1.89e6 0.00
>> DBGvpp#
>>
>> ```
>>
>>
>> *show runtime output in issue case :```*
>>
>> DBGvpp# show runtime rtb-vpp-epoll-process
>>
>> Name State Calls Vectors
>> *Suspends* Clocks Vectors/Call
>>
>> rtb-vpp-epoll-process any wait 0 0
>> *81477* 7.08e6 0.00
>>
>> DBGvpp# show runtime rtb-vpp-epoll-process
>>
>> Name State Calls Vectors
>> *Suspends * Clocks Vectors/Call
>>
>> rtb-vpp-epoll-process any wait 0 0
>> *81477* 7.08e6 0.00
>>
>> *```*
>>
>> Other process nodes like lldp-process,
>> ip4-neighbor-age-process, ip6-ra-process running without any issue. only
>> "rtb-vpp-epoll-process" process node suspended forever.
>>
>>
>>
>> Please let me know if any additional information is required.
>>
>> Hi Jinsh,
>> Thanks for pointing me to the issue you faced. The issue I am facing
>> looks similar.
>> I will verify with the given patch.
>>
>>
>> Thanks and Regards,
>>
>> Sudhir
>>
>>
>>
>> On Sun, Feb 19, 2023 at 6:19 AM jinsh11 <jins...@chinatelecom.cn> wrote:
>>
>> HI：
>>
>>
>> - I have the same problem，
>>
>> bfd process node stop running. I raised this issue,
>>
>> https://lists.fd.io/g/vpp-dev/message/22380
>> I think there is a problem with the porcess scheduling module when using
>> the time wheel.
>>
>>
>>
>>
>>
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>>
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