Hi Xyxue,
listen() sits in a polling loop for the short amount of time it takes
for VPP to process the bind VPE api message.
send, recv, and connect may sit in a polling loop if the session is
configured as blocking when there is nothing to be done (i.e. is blocked
waiting for resources).
Thanks,
-daw-
On 6/5/2018 1:48 AM, 薛欣颖 wrote:
Hi daw,
Thank you for your reply . Another question :If the 'listen
,send,recv,connect' will cause the cpu utilization 100%?
Thanks,
Xyxue
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*发件人：* Dave Wallace <mailto:dwallac...@gmail.com>
*发送时间：* 2018-06-05 02:22
*收件人：* vpp-dev <mailto:vpp-dev@lists.fd.io>; 薛欣颖
<mailto:xy...@fiberhome.com>
*主题：* Re: [vpp-dev] The VCL server CPU utilization is 100% ， if
there is no message to the epoll_wait
Xyxue,
This is a known by-product of the existing [prototype] epoll_wait
implementation. There is currently no mechanism in epoll_wait to
have the thread block on a condvar which would cause the thread to
sleep instead of sitting in a continuous polling loop.
Fixing this is on the list of things to do in VCL, but there is
currently no ETA for when it will be resolved.
Thanks,
-daw-
On 6/4/2018 6:13 AM, xyxue wrote:
Hi guys，
I‘m testing the VCL . The VCL server CPU utilization is 100% ,if
there is no message to the epoll_wait. Is there anything I can do
to slove it?
Is there the same problem in the VCL client?
Thanks,
Xyxue
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