From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 68F881C2DC6 for ; Fri, 27 Sep 2024 20:50:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727470236; cv=none; b=VeFNQDrqXuqTtDNoV/y/VYQJVX0kzWRVRmJB5QtSO30Zm1gJb3hAvWmb6ttifDjdyq8XSZiUMLCbYPrq3zPsNb+J5gqNV7GZJ+EynpvYtgTc/HfhHXHcsbgqR0KNa6on+vmHcBTVCC8jIucsh/WoGjYQT6VQ/vV9ornNn4vE9Ss= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727470236; c=relaxed/simple; bh=Ehr+2NKsngL7ZGsFX4D84MvJxLhbtVlSuY/MGkYSJZ0=; h=From:In-Reply-To:References:To:Cc:Subject:MIME-Version: Content-Type:Date:Message-ID; b=sC1tWcYQXybZftddMD7T4cojmQwSng+AS/IGgS8bPQKRifCbIhilSurjsRx14S4pVa+vLX4X8rC8ORs4OUe+j/S072y8vHMaTFLT1GWd1r7N4L236yfF0R6IeX0aovn9JvqIbbT9OGxNa2BxqA99PDA1erkPWfPgOdKYRx4AH9A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=E4EQhqTr; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="E4EQhqTr" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1727470231; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Ehr+2NKsngL7ZGsFX4D84MvJxLhbtVlSuY/MGkYSJZ0=; b=E4EQhqTru6oQ5IKYFUWuX8uIJH26XaLONrIfpbHXwC+X6rAdVTk4nNto7xviPl8FDzCA+M yKTyVO90fXjXDdVSv5PKwL5KhyOJKQ+6YHKnGTsPw1GSyFICNTSfRlyeTcmxsP78YkWabm C/rLtXxn8RcS8VzeGmWU8dm//2n65mk= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-319-peQ0JcNLMAKLyO6YtwYCog-1; Fri, 27 Sep 2024 16:50:27 -0400 X-MC-Unique: peQ0JcNLMAKLyO6YtwYCog-1 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (unknown [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8C38818DEF1D; Fri, 27 Sep 2024 20:50:23 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.42.28.145]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 2A0421956086; Fri, 27 Sep 2024 20:50:16 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <20240923183432.1876750-1-chantr4@gmail.com> References: <20240923183432.1876750-1-chantr4@gmail.com> <20240814203850.2240469-20-dhowells@redhat.com> To: Manu Bretelle , Eduard Zingerman Cc: dhowells@redhat.com, asmadeus@codewreck.org, ceph-devel@vger.kernel.org, christian@brauner.io, ericvh@kernel.org, hsiangkao@linux.alibaba.com, idryomov@gmail.com, jlayton@kernel.org, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-nfs@vger.kernel.org, marc.dionne@auristor.com, netdev@vger.kernel.org, netfs@lists.linux.dev, pc@manguebit.com, smfrench@gmail.com, sprasad@microsoft.com, tom@talpey.com, v9fs@lists.linux.dev, willy@infradead.org Subject: Re: [PATCH v2 19/25] netfs: Speed up buffered reading Precedence: bulk X-Mailing-List: netfs@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <2663728.1727470216.1@warthog.procyon.org.uk> Date: Fri, 27 Sep 2024 21:50:16 +0100 Message-ID: <2663729.1727470216@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 Is it possible for you to turn on some tracepoints and access the traces? Granted, you probably need to do the enablement during boot. David