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 F1B0419C54E for ; Wed, 26 Feb 2025 11:39:25 +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=1740569967; cv=none; b=lQCnzgJLniszaMZm/gexsCMyscsYi3U6r7Flw4wnyDqVi1Pr7OXWxW+6P9zbWA24I8m1K9Ya8cCpnpUapCM1H5kp9i3HU8fiqzvNQBjuR6KyKZEpZeJDwPygP8lu9kxpbIINtN3nBkocdE74pkSt7CKeNHWLOzZaQ/QEo5GDC8U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740569967; c=relaxed/simple; bh=91HyT0xAPvt5kzPtlkf3c0T76XPdPOpKrD6w5BJb1OQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=WFacmMS7/kpmLGPD/gtuVXGQ8O6+FGoUA6ALhi72Y5eJZfJ68YKn7KhtB56n6q3M9xVFdkRFXqYUyA/sPfy0PKpetK9eb6l71RP5GWjQwBX9IbAzA8U+1pQiIw5/XkZukf8UOhv45t5BWQVRWdXbHnKXaJV0Ou13c0uKtDaiI4s= 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=Vp5LzxRl; 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="Vp5LzxRl" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1740569964; 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=yrReGGAl/vB7YRDV5AmH0LImtmenH6zPTsYUBs/1CmQ=; b=Vp5LzxRl46Gk/l5caRMo8cr3zF9+QgFmDImVR22QQ6g6cOnBqblLU9KxnFIBjUpuMA4NvZ Ic2dxEMp5lPQCTqvrUsLeZ+v6rW0p4t5DwZ15iVIGjTdmRTNBNlK7REF7G6caLwp90Jy4V cpGdBwreo05I/cIUXcHlMQ903+i+d/Q= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-437-zm6XF-TgPMuFUWQr_L91gQ-1; Wed, 26 Feb 2025 06:39:23 -0500 X-MC-Unique: zm6XF-TgPMuFUWQr_L91gQ-1 X-Mimecast-MFC-AGG-ID: zm6XF-TgPMuFUWQr_L91gQ_1740569961 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (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-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 28D3F1801A18; Wed, 26 Feb 2025 11:39:21 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.45.226.247]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id 0A1F2300018D; Wed, 26 Feb 2025 11:39:16 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Wed, 26 Feb 2025 12:38:51 +0100 (CET) Date: Wed, 26 Feb 2025 12:38:45 +0100 From: Oleg Nesterov To: "Sapkal, Swapnil" Cc: Manfred Spraul , Linus Torvalds , Christian Brauner , David Howells , WangYuli , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, K Prateek Nayak , "Shenoy, Gautham Ranjal" , Neeraj.Upadhyay@amd.com Subject: Re: [PATCH] pipe_read: don't wake up the writer if the pipe is still full Message-ID: <20250226113845.GB8995@redhat.com> References: <20250102140715.GA7091@redhat.com> <20250224142329.GA19016@redhat.com> <20250225115736.GA18523@redhat.com> <2a0a8e1e-1c37-4655-8a82-54681b2a83ae@amd.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2a0a8e1e-1c37-4655-8a82-54681b2a83ae@amd.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Thanks Sapkal! I'll try to think. Meanwhile, On 02/26, Sapkal, Swapnil wrote: > > Exact command with parameters is > > /usr/bin/hackbench -g 16 -f 20 --threads --pipe -l 100000 -s 100 Can you reproduce with "--process" rather than "--threads" ? Oleg.