Hello,
I have installed a 2013 Lync environment in our lab with two front end pools each having two servers. Both SQL store & Monitoring servers are standalone. I have noticed high memory utilization on each of the front end servers in the pool from time to time and the usage does not go down for a long time causing other service timeouts, errors etc as seen in Lync Server logs on the front ends.
The process that is taking up all the memory is LysSVC.exe and I cannot find any relevant information in either MSDN or Technet. Surprisingly Google search yeided no results (am I the only one?). The process seems to be part of the Lync Server core atleast as seen in the install directory in C:\program files\Lync 2013\Server\core\LysSVC.exe.
Appreciate any help on figuring out why it's consuming all memory (though CPU utilization is anywhere from 0-10%) from time to time over extended periods.