Hello More precisely it is cpuset instead of of cgroups
The issue with isolcpus is that you are completely isolated from the OS scheduler. If you are guaranteed that there will be one and only one thread (with thread affinity) it's ok. However if more than one thread will be assigned to this core you will suffer from scheduling issues between the threads because scheduler cannot load balance them effectively. Cheers On Thursday, February 15, 2018, Georges Gomes <[email protected]> wrote: > Hi > If you are looking for low latency in high percentiles for your thread > pickup then I had good results with isolcpu. > How do you plan to setup cgroups to achieve the same “exclusive” core? > Cheers > Georges > > On Thu, Feb 15, 2018 at 11:17 AM 'Jean Dagenais' via mechanical-sympathy < > [email protected]> wrote: > >> Hello, >> >> We are investigating the use of isolcpus and/or cgroups to isolate a set >> of cores where we will run our Java busy wait message processing threads >> (using a thread affinity library). Other threads will run on "generic >> cores". >> >> I think that we can achieve the same objective with both isolcpus and >> cgroups, and I was wondering if there are best approaches/shortcomings >> related to: >> >> - Using only isolcpus >> - Using only cgroups >> - Using isolcpus and cgroups >> >> Also, does the latest release of Red Hat 7 provides better support for >> cgroups versus isolcpus? >> >> Thanks for all your help/advise! >> Jean >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "mechanical-sympathy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > -- > You received this message because you are subscribed to the Google Groups > "mechanical-sympathy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "mechanical-sympathy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
