Return-Path: X-Original-To: apmail-hbase-dev-archive@www.apache.org Delivered-To: apmail-hbase-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 23C6D10D62 for ; Tue, 24 Sep 2013 17:14:24 +0000 (UTC) Received: (qmail 71584 invoked by uid 500); 24 Sep 2013 17:14:22 -0000 Delivered-To: apmail-hbase-dev-archive@hbase.apache.org Received: (qmail 71274 invoked by uid 500); 24 Sep 2013 17:14:16 -0000 Mailing-List: contact dev-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@hbase.apache.org Delivered-To: mailing list dev@hbase.apache.org Received: (qmail 71256 invoked by uid 99); 24 Sep 2013 17:14:14 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 24 Sep 2013 17:14:14 +0000 X-ASF-Spam-Status: No, hits=1.5 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of nidmgg@gmail.com designates 209.85.220.170 as permitted sender) Received: from [209.85.220.170] (HELO mail-vc0-f170.google.com) (209.85.220.170) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 24 Sep 2013 17:14:09 +0000 Received: by mail-vc0-f170.google.com with SMTP id kw10so3680521vcb.1 for ; Tue, 24 Sep 2013 10:13:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=xZpO9tjT8mU0CWgvJoiF8VRcM5dmygxe0ckVM1Sr660=; b=bZ+6hnZ0O+2HyVJ4GZd4S9RK+hzPZY9nFP5eKs/FjmBzkv3jUmh93ybL2U4yEqMlAD adJJ110xdO33NNnR+IOL/D93hOTzwUWzTlQQcAhTUWS+2FomyzTdM8HyVdABnUdGDGeZ onnAWX9V1hcoqMZdIfsFK1y1Ut+p+ZnPsEPRomdpNch+nAlrARXeh96kA/BLgyIUKEEo aQO1DoXdru117E6Yd3CvibHNEXenXPn435fYPyaKYjZzbZgBVxBhT6ArvtqNvlD8U+ze xuyAPR72NppE/EH6JBcO1uBGoxLl0ukTdFWeubBepp2/SORtDbKPskqtuW2imMHgf3ZP Oucw== MIME-Version: 1.0 X-Received: by 10.58.229.41 with SMTP id sn9mr24015354vec.11.1380042828670; Tue, 24 Sep 2013 10:13:48 -0700 (PDT) Received: by 10.221.28.136 with HTTP; Tue, 24 Sep 2013 10:13:48 -0700 (PDT) In-Reply-To: References: Date: Tue, 24 Sep 2013 10:13:48 -0700 Message-ID: Subject: Re: Random reads are 5x faster in 0.96.0! Or not From: Demai Ni To: dev@hbase.apache.org Content-Type: multipart/alternative; boundary=047d7bdca04293ee2f04e72442ac X-Virus-Checked: Checked by ClamAV on apache.org --047d7bdca04293ee2f04e72442ac Content-Type: text/plain; charset=ISO-8859-1 hi, J-D, It is a very exciting improvement. If we'd like to make 0.94 user benefit from this, will backport HBASE-7008 be good enough, code wise? Certainly, more testing is needed to guard it. Thanks. Demai On Mon, Sep 23, 2013 at 5:10 PM, Jean-Daniel Cryans wrote: > Hey devs, > > I was testing performance of 0.96.0RC3 vs 0.94.12 and found that random > reads are 5x faster out of the box in the former, party! But wait, no, > HBASE-7008 disabled Nagle's algo and it was only applied to 0.95, so if you > configure that in 0.94 it becomes even faster than 0.96 by a small margin. > > Just a reminder when doing your own testing, > > J-D > --047d7bdca04293ee2f04e72442ac--