Date: Tue, 6 Nov 2018 07:46:33 +0100 From: =?UTF-8?Q?V=c3=a1clav_Haisman?= <vhaisman@gmail.com> To: freebsd-hackers@freebsd.org Subject: Re: FreeBSD 11.x thread creation time is 9000+ microseconds on Intel Xeon Gold series CPU Message-ID: <7bb8463e-aa5d-bade-7ae7-6c612bae65f9@gmail.com> In-Reply-To: <CAKsGTHQnaEsqmf_g%2BhH=agmfJ5Z4sZY8qkw1iJWyOF=1e6qm-g@mail.gmail.com> References: <CAKsGTHQnaEsqmf_g%2BhH=agmfJ5Z4sZY8qkw1iJWyOF=1e6qm-g@mail.gmail.com>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --OpV3w5i4nFj9vxHOOI8hRdlXMGOMjcdZo Content-Type: multipart/mixed; boundary="3GItp3KyG4VyP6g7Qej0IVnTrtbcvhE9C"; protected-headers="v1" From: =?UTF-8?Q?V=c3=a1clav_Haisman?= <vhaisman@gmail.com> To: freebsd-hackers@freebsd.org Message-ID: <7bb8463e-aa5d-bade-7ae7-6c612bae65f9@gmail.com> Subject: Re: FreeBSD 11.x thread creation time is 9000+ microseconds on Intel Xeon Gold series CPU References: <CAKsGTHQnaEsqmf_g+hH=agmfJ5Z4sZY8qkw1iJWyOF=1e6qm-g@mail.gmail.com> In-Reply-To: <CAKsGTHQnaEsqmf_g+hH=agmfJ5Z4sZY8qkw1iJWyOF=1e6qm-g@mail.gmail.com> --3GItp3KyG4VyP6g7Qej0IVnTrtbcvhE9C Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable On 06. 11. 18 5:01, Steevan Rodrigues wrote: > 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 ) >=20 > I have attached a simple program which creates thread and computes time= There is no attachment. The mailing list software probably stripped that.= > 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. >=20 > On other platforms this thread creation time is usually 20 to 30 us onl= y. > Any idea why it takes so much more time with FreeBSD 11.x ? > Is there any processor specific tuning that needs to be done ? >=20 > Thanks, > Steevan > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.o= rg" >=20 --=20 VH --3GItp3KyG4VyP6g7Qej0IVnTrtbcvhE9C-- --OpV3w5i4nFj9vxHOOI8hRdlXMGOMjcdZo Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEARYKAB0WIQTkBikvfQi7sAhGExQEuJ1R3+WiFQUCW+E40AAKCRAEuJ1R3+Wi FaHXAP4gph0xiOdYnlG+wTcVhtpWrtWDOPMAz45PE9cUKYu12wEA/eFShbTvIfW/ qA7am8DBI5ADU2xmLa6jQyc88V6M4Qk= =bAAc -----END PGP SIGNATURE----- --OpV3w5i4nFj9vxHOOI8hRdlXMGOMjcdZo--
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