From nobody Sat Jan 13 19:24:40 2024 X-Original-To: fs@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 4TC7dP0k3hz56ThP for ; Sat, 13 Jan 2024 19:24:41 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4TC7dN6NJ1z47CB for ; Sat, 13 Jan 2024 19:24:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1705173880; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CI1YY2OwB/5Zp0snG0TkI5Ba6ZBgEtWBq6X5MhxWrXM=; b=CuWJyh+Rej5TS5EXUkggc8eyDNfeRY3Ka5S9/MAgtwpkLYzigH18mhCkYo5UMCfosKs8Fl YXsAmOh8EBk6vvNU3nK5iO5ajPDJZhF2DMcaI+dp92ERXcBbGY2h84GANTZGp7CdcN+9gg 5tRNUfjm5JPbYzUmaekrzK98EPOrX9tZg1JmzBEp/j6bMszhtZv8j1aUGW+rqu7i5jD6ij bbwnOBl6dICIBOT18/1t/1lY4Aw8oa3ABls6ey35BWzQCpxy+BzxKCDjvwf6Nls8uNeh73 DaQGzsIXrZsWIuyuZN03VruxdHGIg+HVoyOAvsMSCC3URgPuhKYURI18bF8ZyA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1705173880; a=rsa-sha256; cv=none; b=rAhUXBOAKecdp145PwmrcjVKuPQWl6vzKAz+BaPntWr1SOEdNeSoc6oXS6uKpHBFl5eSCc MGowM4CUvoMQWcffn40y1SXz071zPlA7UWzjtwodZxxQXQa5NLsEIC9eWNSXMnQ8VJI5eR tio4Ye4MIh8M1yUafnWe0/0Bbp3lfdqyDP/yR+OV5V5jVoFLUT8gLAqOJ/kgvYDYxeyqe2 Ubyy05TTWY+nBnRkaOc5/tRqdqp/TPa+Lmhtwg+yjfeG3YeEvoQCZiNLCjExXy9JeUN7Zx ZWlZlde3+svGAPpYvEiv9OWVZcxELH61ZmPLDupGDa7IDh4dQgZYYtG0laGh3A== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4TC7dN5RbDzjln for ; Sat, 13 Jan 2024 19:24:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 40DJOejE001049 for ; Sat, 13 Jan 2024 19:24:40 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 40DJOemh001048 for fs@FreeBSD.org; Sat, 13 Jan 2024 19:24:40 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 276299] Write performance to NFS share is ~4x slower than on 13.2 Date: Sat, 13 Jan 2024 19:24:40 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 14.0-RELEASE X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: rmacklem@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: fs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@freebsd.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D276299 --- Comment #6 from Rick Macklem --- Oh, and it might be worth capturing packets while writes are slow and taking a look at them in wireshark. (Unlike tcpdump, wireshark knows NFS.) Something like: # tcpdump -s 0 -w out.pcap host on the NFS server and then look at out.pcap in wireshark. (I just install wireshark on my Windows laptop. No need to bother with X windows.) You might see error replies for NFS RPCs or TCP timeouts/retransmits that would explain the slowdown. (Or TCP reconnects. I once saw a case where the network switch would decide to inject an RST in the TCP stream forcing the NFS client to create a new connection. Why did it do this? No idea.) --=20 You are receiving this mail because: You are the assignee for the bug.=