From mboxrd@z Thu Jan 1 00:00:00 1970 From: Doug Ledford Subject: Re: [PATCH 1/2] net/mlx5: increase async EQ to avoid EQ overrun Date: Mon, 05 Feb 2018 11:02:10 -0500 Message-ID: <1517846530.3936.71.camel@redhat.com> References: <1517840992-29813-1-git-send-email-maxg@mellanox.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-VhciqkttP+dvbQ1+7B5Y" Return-path: In-Reply-To: <1517840992-29813-1-git-send-email-maxg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Max Gurtovoy , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, jgg-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org, sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org Cc: vladimirk-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org List-Id: linux-rdma@vger.kernel.org --=-VhciqkttP+dvbQ1+7B5Y Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2018-02-05 at 16:29 +0200, Max Gurtovoy wrote: > Currently the async EQ has 256 entries only. It might not be big enough > for the SW to handle all the needed pending events. For example, in case > of many QPs (let's say 1024) connected to a SRQ created using NVMeOF targ= et > and the target goes down, the FW will raise 1024 "last WQE reached" event= s > and may cause EQ overrun. Increase the EQ to more reasonable size, that b= eyond > it the FW should be able to delay the event and raise it later on using i= nternal > backpressure mechanism. >=20 > Signed-off-by: Max Gurtovoy Thanks, applied. But if this gets me in trouble with DaveM for sending a patch to drivers/net, I'm gonna tell him it's because you sent it here and excluded netdev@ and that it was part of a series related to an RDMA issue that I took it, all while giving you the evil eye ;-) --=20 Doug Ledford GPG KeyID: B826A3330E572FDD Key fingerprint =3D AE6B 1BDA 122B 23B4 265B 1274 B826 A333 0E57 2FDD --=-VhciqkttP+dvbQ1+7B5Y Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEErmsb2hIrI7QmWxJ0uCajMw5XL90FAlp4gAIACgkQuCajMw5X L917DA//YuOayVQAzaH954J+ev9QinxqtcLYVhCOH6FCxAP91TkV9fKuSL5UeYV0 Pcw3qLQw5MjM+bmUh1CZxQTUqf5VLIr96PLccGgJpcN1URK5P9KPXba7yzJoaozF uqchD91cHtFUoAzso7Y/cymspg8GWxEcFfJ9Rso+kIoxQEVDOSZqbV7FzYWBjf0k vvd4tkmLq6ZMcHc81iI9XrMVgfeZ44n037RsKHxImqTquXyZSRNfcaa8FA/HUQ1+ tkyo6s+A0NxJgCRKswVOCK47Yue9CXWiZYRh1BSWId62bl9iu+yEJf/UaV8UP4iU whUKhBJHrlOVsMsf0IgiELS5OxCvejBcuno1FvEkZ6eY1vbi66IJ2lAkPYj5OMwL muSZjSp76FB7GyaWZKd3zf0MkLtszTkJbcRWMGwf509mQQyhCsAEvILFOe+pCb+V orypValwgGuaCgq69+J9taf5D/pBGYSXWZI3ZRAOJr/496wQAb0HpQ+yeRKlc8JK HX64Ao00SELGoOrcZcir3TxwTW7XyssEUS4HKDRdAmlma/3Z2DVj4DL067YjTQlN cjiEbhfuywFbZw9toj6fze9y4qbV+e1JO5/sLcVA8iDePMzaubSiMYatAhhEuybe aasHzGRXF+1wy693O7TnQPXhWOWsof69/Evnppi3FqFOAxlEMU4= =wwTr -----END PGP SIGNATURE----- --=-VhciqkttP+dvbQ1+7B5Y-- -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html