From nobody Tue Aug 15 00:34:12 2023 X-Original-To: current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4RPsj16gyqz4q6lH for ; Tue, 15 Aug 2023 00:34:29 +0000 (UTC) (envelope-from kevin.bowling@kev009.com) Received: from mail-ed1-x534.google.com (mail-ed1-x534.google.com [IPv6:2a00:1450:4864:20::534]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4RPsj13nXbz3JxY for ; Tue, 15 Aug 2023 00:34:29 +0000 (UTC) (envelope-from kevin.bowling@kev009.com) Authentication-Results: mx1.freebsd.org; none Received: by mail-ed1-x534.google.com with SMTP id 4fb4d7f45d1cf-525656acf4bso2141764a12.0 for ; Mon, 14 Aug 2023 17:34:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kev009.com; s=google; t=1692059666; x=1692664466; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=9bTv8PR5ToMJJe48ocjlbsMCJM1zQrJPWXSFgKHxnrY=; b=dH4guf/D3qGuxMTJgi+jqyVcwTpsvNQdXvHBI/1d5Im3xvwi9wTFhoPPV8rAdCRf// RoBMtjwd4MuajFWXdni2q+iyHV+bcbrqTFVCEWxiFjP2acnqHLEH3aw4uD4k1DXS9J6U sWNrP+yGaA9HhLeZNXyMGW+6mSrvESe7GVN8A= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692059666; x=1692664466; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=9bTv8PR5ToMJJe48ocjlbsMCJM1zQrJPWXSFgKHxnrY=; b=VlMLjczu+aPTdzhHTKqLVrO6LszcyRKSHVasGKuLiazWWR7Up6msalc708OXcDpInT RTwbXiY02IV36eQVku7QOQzggfTY0svY8g6ui+NIhYZ0BujpMHieVamQ4lUINqSbXNxV Nsq+wxZAy1ZKhwuN/NOc83DKW/Ms7GUDhHlNThsK95al4lV5VY2bFRBOJtAdoSA9o/Tb Kt5FPqXBb8pru9mhnE6WlSz9VAbT64xwJ7WaZhgYdYenGMe7e+K4egY9QJG6NCUh9B+Z d0aZaKWLLL//u2m4S4baAHN6u2D3jIjj5y+ntW0T0UibD8ztS9uYDUq1mHtxfb7h993M BFIQ== X-Gm-Message-State: AOJu0YyaAfabxled1Hl9FLRDwyuJ6RPtuH+5nYXht95g3A9o+g1d6v/+ jXt4ASwXMibybNdRaGYnQ1VyuVP5ubA9ADzaGfLNzWEf/CbiQwCss8Q= X-Google-Smtp-Source: AGHT+IHpTYJmio48FJqJmyBcoiecizjgE5MKNyvIb2TnZ7Mz4+6/WucGTPPoNdJBsRmSu+odGpA0Lcz8E6OK9Jlh5D4= X-Received: by 2002:a05:6402:151a:b0:523:3754:a4e1 with SMTP id f26-20020a056402151a00b005233754a4e1mr8744020edw.22.1692059665604; Mon, 14 Aug 2023 17:34:25 -0700 (PDT) List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org MIME-Version: 1.0 References: <20230814124703.3875a7ba266cdf079525eb82@dec.sakura.ne.jp> <20230814043746.GE87066@eureka.lemis.com> <20230814234540.GG87066@eureka.lemis.com> In-Reply-To: <20230814234540.GG87066@eureka.lemis.com> From: Kevin Bowling Date: Mon, 14 Aug 2023 17:34:12 -0700 Message-ID: Subject: Re: Potential show-stopper in em driver? To: "Greg 'groggy' Lehey" Cc: current@freebsd.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 4RPsj13nXbz3JxY X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US] On Mon, Aug 14, 2023 at 4:45=E2=80=AFPM Greg 'groggy' Lehey wrote: > > [moving to current as requested by bz@] > > On Monday, 14 August 2023 at 10:09:22 -0700, Kevin Bowling wrote: > > > > I'm able to replicate this on my I217 using iperf3. It happens > > quickly with flow control enabled (default) and takes about 15 minutes > > of line rate with flow control disabled. I am looking into the scope > > of the issue and will commit a fix or enable chicken bits for affected > > parts soon. > > Thanks. Let me know when you have something and I'll test it. I went ahead and reverted: 797e480cba8834e584062092c098e60956d28180 I thought I had a handle on the bug a few times but all I've managed to do is make it take a bit longer to stall so far. Whatever is going on is very subtle and may be outside the em_txrx.c code. > I'll reply to the other message later, but things look better without > TCO. I'm able to reproduce on my machine with the same NIC as yours so I no longer need the requested debugging info. > Greg > -- > Sent from my desktop computer. > See complete headers for address and phone numbers. > This message is digitally signed. If your Microsoft mail program > reports problems, please read http://lemis.com/broken-MUA.php