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2.11. The PC Card Daemon

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The pcscd daemon is used to manage connections to PC and SC smart card readers. Although pcscd is usually a low priority task, it can often use more CPU than any other daemon. This additional background noise can lead to higher pre-emption costs to real-time tasks and other undesirable impacts on determinism.

Procedure 2.10. Disabling the pcscd Daemon

  1. Check the status of the pcscd daemon. 
    ~]# systemctl status pcscd
pcscd.service - PC/SC Smart Card Daemon
   Loaded: loaded (/usr/lib/systemd/system/pcscd.service; static)
   Active: active (running) …
  2. If the pcscd daemon is running, stop it. 
    ~]# systemctl stop pcscd
  3. Ensure that pcscd does not restart on boot. 
    ~]# systemctl disable pcscd
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