Date: Tue, 6 Nov 2018 09:31:30 +0530 From: Steevan Rodrigues <steevanxperia@gmail.com> To: freebsd-hackers@freebsd.org Subject: FreeBSD 11.x thread creation time is 9000+ microseconds on Intel Xeon Gold series CPU Message-ID: <CAKsGTHQnaEsqmf_g%2BhH=agmfJ5Z4sZY8qkw1iJWyOF=1e6qm-g@mail.gmail.com>
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Hi , I am seeing a FreeBSD 11.x OS poor performance issue . CPU is Intel(R) Xeon(R) Gold 5115 CPU @ 2.40GHz ( dual socket CPU with 10 cores per socket ) I have attached a simple program which creates thread and computes time taken to create this thread. On this CPU with FreeBSD 11.x OS it takes 9000 to 15000 micro seconds ( us) to create just one thread. On other platforms this thread creation time is usually 20 to 30 us only. Any idea why it takes so much more time with FreeBSD 11.x ? Is there any processor specific tuning that needs to be done ? Thanks, Steevan
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