Date: Wed, 31 Mar 2021 08:17:43 +0200 From: Vincenzo Maffione <vmaffione@freebsd.org> To: =?UTF-8?B?w5Z6a2FuIEtJUklL?= <ozkan.kirik@gmail.com> Cc: FreeBSD Net <freebsd-net@freebsd.org>, krzysztof.galazka@intel.com, gowtham.kumar.ks@intel.com, erj@freebsd.org, jeffrey.e.pieper@intel.com Subject: Re: ixl netmap TX queue remains full Message-ID: <CA%2B_eA9gN6-Tcy-cs5kecCYfJY1VjpZ_pPu7R2ODPUHMEPik=qg@mail.gmail.com> In-Reply-To: <CAAcX-AHypqKdKA0n%2BUEBt_HpeduNTeyD=VAyeC%2BzuSrH7yM-XQ@mail.gmail.com> References: <CAAcX-AE5%2B8v4YWix1pUxedY0aYgpoHL5G9_oUqTXRoS_prNVNQ@mail.gmail.com> <CA%2B_eA9hV2k1mExm9fttbRey53vEvOtk%2BCgHX9ancsJ%2BJu10Miw@mail.gmail.com> <CAAcX-AHypqKdKA0n%2BUEBt_HpeduNTeyD=VAyeC%2BzuSrH7yM-XQ@mail.gmail.com>
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Hi =C3=96zkan, I'm glad that worked. Nevertheless, there must be an issue lurking around in the ixl driver code, affecting the case enable_head_writeback=3D=3D1. It may be related to the fact that https://reviews.freebsd.org/D26896 causes issues, even though it looks a legitimate change. Cheers, Vincenzo Il giorno mar 30 mar 2021 alle ore 08:56 =C3=96zkan KIRIK <ozkan.kirik@gmai= l.com> ha scritto: > Hello Vincenzo, > > Before your email, hw.ixl.enable_head_writeback =3D 1. After your > suggestion, i set the hw.ixl.enable_head_writeback =3D 0. then it works > properly. > > Thank you so much > > Cheers > =C3=96zkan > > On Tue, Mar 30, 2021 at 9:22 AM Vincenzo Maffione <vmaffione@freebsd.org> > wrote: > >> Hi, >> Could this be related to >> https://reviews.freebsd.org/D26896? >> >> Moreover, what happens if you switch the enable_head_writeback sysctl? >> >> Cheers, >> Vincenzo >> >> Il giorno lun 29 mar 2021 alle ore 10:36 =C3=96zkan KIRIK < >> ozkan.kirik@gmail.com> ha scritto: >> >>> Hello, >>> >>> I hit problems about ixl driver's netmap support. I have no problems wi= th >>> ixgbe. >>> The problem is tested with FreeBSD 12.2-p5 and FreeBSD 13.0-RC3. >>> >>> ixl in netmap mode, it works with low throughput (about 2 Gbps) for 20-= 30 >>> seconds. And then TX queue remains full. poll with POLLOUT and even >>> ioctl(fd, NIOCTXSYNC) does not work. So that nic stops working. >>> >>> Same netmap software with ixgbe has no problems. >>> >>> pciconf -lv output: >>> ixl0@pci0:183:0:0: class=3D0x020000 card=3D0x37d215d9 chip=3D0x37d28086 >>> rev=3D0x04 >>> hdr=3D0x00 >>> vendor =3D 'Intel Corporation' >>> device =3D 'Ethernet Connection X722 for 10GBASE-T' >>> class =3D network >>> subclass =3D ethernet >>> ixl1@pci0:183:0:1: class=3D0x020000 card=3D0x37d215d9 chip=3D0x37d28086 >>> rev=3D0x04 >>> hdr=3D0x00 >>> vendor =3D 'Intel Corporation' >>> device =3D 'Ethernet Connection X722 for 10GBASE-T' >>> class =3D network >>> subclass =3D ethernet >>> ixl2@pci0:183:0:2: class=3D0x020000 card=3D0x37d015d9 chip=3D0x37d08086 >>> rev=3D0x04 >>> hdr=3D0x00 >>> vendor =3D 'Intel Corporation' >>> device =3D 'Ethernet Connection X722 for 10GbE SFP+' >>> class =3D network >>> subclass =3D ethernet >>> ixl3@pci0:183:0:3: class=3D0x020000 card=3D0x37d015d9 chip=3D0x37d08086 >>> rev=3D0x04 >>> hdr=3D0x00 >>> vendor =3D 'Intel Corporation' >>> device =3D 'Ethernet Connection X722 for 10GbE SFP+' >>> class =3D network >>> subclass =3D ethernet >>> >>> Best regards >>> _______________________________________________ >>> freebsd-net@freebsd.org mailing list >>> https://lists.freebsd.org/mailman/listinfo/freebsd-net >>> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >>> >>
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