diff options
| -rw-r--r-- | host/docs/general.dox | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/host/docs/general.dox b/host/docs/general.dox index 14f017d04..3a344ffe7 100644 --- a/host/docs/general.dox +++ b/host/docs/general.dox @@ -172,21 +172,26 @@ to use at most one thread context for manipulating device settings. \subsection general_threading_prio Thread priority scheduling -When UHD software spawns a new thread it may try to boost the thread's -scheduling priority. When setting the priority fails, the UHD software -prints out an error. This error is harmless; it simply means that the -thread will have a normal scheduling priority. +When UHD software spawns a new thread, it may try to boost the thread's +scheduling priority. If setting the new priority fails, the UHD software +prints a warning to the console, as shown below. This warning is harmless; +it simply means that the thread will retain a normal or default scheduling priority. + + UHD Warning: + Unable to set the thread priority. Performance may be negatively affected. + Please see the general application notes in the manual for instructions. + EnvironmentError: OSError: error in pthread_setschedparam <b>Linux Notes:</b> Non-privileged users need special permission to change the scheduling -priority. Add the following line to `/etc/security/limits.conf`: +priority. Add the following line to the file `/etc/security/limits.conf`: @GROUP - rtprio 99 -Replace `GROUP` with a group to which your user belongs. -Settings will not take effect until the user is in a different login -session. +Replace `GROUP` with a group in which your user is a member. You may need +to log out and log back into the account for the settings to take effect. +In most Linux distributions, a list of groups and group members can be found in the file `/etc/group`. \section general_misc Miscellaneous Notes |