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From: | Simone Ciccia S210664 |
Subject: | Re: [Discuss-gnuradio] issues with thread priority |
Date: | Sun, 21 Feb 2016 12:31:34 +0100 |
User-agent: | Roundcube Webmail/1.0.5 |
Hi Marcus, thank you for the support. Yes, I configured the files as follows: /etc/security/limits.conf #<domain> <type> <item> <value> # #* soft core 0 #root hard core 100000 #* hard rss 10000 address@hidden hard nproc 20 address@hidden soft nproc 20 address@hidden hard nproc 50 #ftp hard nproc 0 #ftp - chroot /ftp address@hidden - maxlogins 4 #di base: @usrp - rtprio 99 # End of file /etc/group simone:x:1000: usrp:x:1001:simone I discovered that, testing the following code (e.g in codeblocks), #include <iostream> #include <sched.h> //cpu_set_t , CPU_SET #include <pthread.h> //pthread_t #include <stdio.h> using namespace std; int main() { int policy = SCHED_RR; int min_pri = sched_get_priority_min(policy); int max_pri = sched_get_priority_max(policy); sched_param sp; sp.sched_priority = int((max_pri - min_pri)) + min_pri; int ret1 = pthread_setschedparam(pthread_self(), policy, &sp); if (ret1 != 0) std::cout << "\nError in pthread_setschedparam\n"; else std::cout << "\nPriority success\n"; } it succeed to set priority. However, within a gnuradio block it fails. Any suggestion? Il 20.02.2016 15:57 Marcus Müller ha scritto:
Hi Simone,is your user allowed to set thread priority? See the Linux notes under [1].Best regards, Marcus [1] http://files.ettus.com/manual/page_general.html#general_threading On 02/19/2016 12:22 PM, Simone Ciccia S210664 wrote:Hello, I'm experiencing some issue trying to set block thread priorities. I discovered that my USRP is not able to set thread priorities sincethe function pthread_setschedparam(pthread_self(), policy, &sp); fails.Therefore, I tryed to test a simple block (whatever), inserting the core affinity to a processor (e.g. CPU 0) directly in the block GUI, then, in the block constructor I set the thread priority with gr::thread::set_thread_priority(gr::thread::get_current_thread_id(),99); The priority value is retrieved in the work function, and tells that the thread priority is set to 0 (wrong). I suspect that there is a limitation somewhere (probably in the linux kernel or in some configuration file), I tryed it on another machine without problems (all works correctly). Can you help me? _______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradio_______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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