Hi, That’s an inefficiency in ldp when vcl does not use eventfds for notifications. Could you change your vcl.conf and add use-mq-eventfd?
Regards, Florin > On Sep 26, 2022, at 5:35 AM, nengjie wang <moho.man...@gmail.com> wrote: > > Thank you very much for your reply. > > However, after the socket is set to the non blocking mode, the CPU > utilization rate is always 100%. The resource consumption is very high when > multithreading. I can only reduce the CPU utilization rate by using methods > such as select. > > Why does this mode fail in blocking mode? Do you have any ideas? > > Florin Coras <fcoras.li...@gmail.com <mailto:fcoras.li...@gmail.com>> > 于2022年9月8日周四 02:06写道： > Hi, > > Just tested on master and this seems to work fine after a few app fixes. > Having said that, I would recommend you build vcl native apps and register > multiple workers for better performance. > > Comments: > - make sure sockets are not blocking otherwise there’s a good change that > only one of the threads will output something > - only print a message if data was received > > See diff here [1]. > > Example output, with 2 clients (c1 and c2) and updated ips. > > [snip] > vppcom_session_create:1410: vcl<233836:0>: created session 1 > ldp<233836>: fd 33: calling vls_bind: vlsh 1, addr 0x7ffd7d7cf750, len 16 > vppcom_session_bind:1599: vcl<233836:0>: session 1 handle 1: binding to local > IPv4 address 7.0.0.2 port 12342, proto UDP > vppcom_session_listen:1628: vcl<233836:0>: session 1: sending vpp listen > request... > vcl_session_bound_handler:569: vcl<233836:0>: session 1 [0x0]: listen > succeeded! > ldp<233836>: fd 33 vlsh 1, cmd 4 > > [recv from 7.0.0.1:60414]c1 s1 > > [recv from 7.0.0.1:56760]c2 s1 > > [recv from 7.0.0.1:56760]c2 s2 > > [recv from 7.0.0.1:60414]c1 s2 > > > Regards, > Florin > > [1] https://pastebin.com/4LCukbEC <https://pastebin.com/4LCukbEC> > > > On Sep 7, 2022, at 12:05 AM, nengjie wang <moho.man...@gmail.com > > <mailto:moho.man...@gmail.com>> wrote: > > > > The attachment is my server program. > > > > My VPP version is 22.06. When I start this server by LDP and send a request > > to this server, the server will have a direct segment error. Two threads > > share an event queue, resulting in an event queue crash. Can you tell me if > > LDP does not support this use? > > > > In addition, I noticed that there is a configuration item called ‘muti > > thread workers’ in the VCL configuration file. When this configuration is > > turned on, the program can not receive RPC response. Is it suitable for me > > to use this configuration item in this case? > > <udp_recv.c> > > > > > > > > > >
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#21929): https://lists.fd.io/g/vpp-dev/message/21929 Mute This Topic: https://lists.fd.io/mt/93520105/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/leave/1480452/21656/631435203/xyzzy [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
