From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f43.google.com (mail-pa0-f43.google.com [209.85.220.43]) by kanga.kvack.org (Postfix) with ESMTP id 086A26B0032 for ; Wed, 28 Jan 2015 01:08:29 -0500 (EST) Received: by mail-pa0-f43.google.com with SMTP id eu11so23447733pac.2 for ; Tue, 27 Jan 2015 22:08:28 -0800 (PST) Received: from mail-pd0-x22f.google.com (mail-pd0-x22f.google.com. [2607:f8b0:400e:c02::22f]) by mx.google.com with ESMTPS id gz1si4529119pbd.38.2015.01.27.22.08.28 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 27 Jan 2015 22:08:28 -0800 (PST) Received: by mail-pd0-f175.google.com with SMTP id fl12so23668194pdb.6 for ; Tue, 27 Jan 2015 22:08:28 -0800 (PST) Date: Wed, 28 Jan 2015 15:08:25 +0900 From: Sergey Senozhatsky Subject: Re: [PATCH 1/2] zram: free meta out of init_lock Message-ID: <20150128060732.GA442@swordfish> References: <20150127040305.GB665@swordfish> <20150128001526.GA25828@blaptop> <20150128002203.GB25828@blaptop> <20150128020759.GA343@swordfish> <20150128025707.GB32712@blaptop> <20150128035354.GA7790@swordfish> <20150128040757.GA577@swordfish> <20150128045028.GB577@swordfish> <20150128045855.GD32712@blaptop> <20150128053541.GE32712@blaptop> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150128053541.GE32712@blaptop> Sender: owner-linux-mm@kvack.org List-ID: To: Minchan Kim Cc: Sergey Senozhatsky , Sergey Senozhatsky , Jerome Marchand , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Nitin Gupta On (01/28/15 14:35), Minchan Kim wrote: > I tested it with dd on /dev/zram0 without any FS on my KVM > and I cannot see any measureable performance gap. > Hmm, I will try it on real machine. hm... no, it's 100% stable ./iozone -t 3 -R -r 16K -s 60M -I +Z test base srcu " Initial write " 1274320.94 1251996.78 " Rewrite " 1965783.94 1994964.06 " Read " 4994070.75 4785895.88 " Re-read " 5134244.62 5010810.50 " Reverse Read " 4098531.38 4049988.38 " Stride read " 4577775.75 4263884.50 " Random read " 4131315.75 4636718.38 " Mixed workload " 3675635.25 3854783.06 " Random write " 1832045.12 1863511.31 " Pwrite " 1238366.59 1258660.47 " Pread " 2475710.28 2404201.75 " Fwrite " 2410579.94 2396443.25 " Fread " 7723248.00 7127479.75 " Initial write " 1325167.41 1321517.41 " Rewrite " 2044098.62 2161141.06 " Read " 5267661.12 6203909.25 " Re-read " 5458601.62 5773477.12 " Reverse Read " 5001896.25 5103856.12 " Stride read " 4858877.62 5003335.25 " Random read " 4620529.88 4685374.62 " Mixed workload " 3868978.19 3939195.31 " Random write " 2037816.75 1949729.56 " Pwrite " 1298255.91 1323038.47 " Pread " 2688768.09 2957903.06 " Fwrite " 2482632.44 2351247.50 " Fread " 7905214.75 7500859.75 " Initial write " 1334890.88 1332275.59 " Rewrite " 2061126.00 2152643.69 " Read " 5749209.88 5652791.62 " Re-read " 5845869.00 6261777.25 " Reverse Read " 4681375.12 4875618.50 " Stride read " 4760689.75 5242670.00 " Random read " 5112395.75 4650536.62 " Mixed workload " 4129292.06 4075847.88 " Random write " 2067824.19 2022719.88 " Pwrite " 1328648.88 1334709.97 " Pread " 2607281.94 2581113.12 " Fwrite " 2404771.38 2348427.62 " Fread " 7903982.75 7486812.50 -ss -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org