[CentOS] CentOS 7 as a guest VM

I am experiencing an issue that my process does not wake out of a select() call when a single character is received in an input file descriptor when running as a VMware guest.

Anyone ever experienced this ?

I can run tshark and see the character arrive, but my process does not wake up and see that character. Most times it works - but once in a while it does not.

So I made a change on my code - and did not just wait on select() - but just try to read the buffer all the time and print the results. once in a while that character is "delayed" getting to my input buffer. Top reports the machine is 99% idle.

Any thoughts?

Jerry