Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 39926 invoked from network); 19 Oct 2010 17:18:51 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 19 Oct 2010 17:18:51 -0000 Received: (qmail 46064 invoked by uid 500); 19 Oct 2010 17:18:50 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 46030 invoked by uid 500); 19 Oct 2010 17:18:49 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 46022 invoked by uid 99); 19 Oct 2010 17:18:49 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 19 Oct 2010 17:18:49 +0000 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests=FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of jbellis@gmail.com designates 209.85.161.44 as permitted sender) Received: from [209.85.161.44] (HELO mail-fx0-f44.google.com) (209.85.161.44) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 19 Oct 2010 17:18:44 +0000 Received: by fxm17 with SMTP id 17so1987615fxm.31 for ; Tue, 19 Oct 2010 10:18:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=W1uDWvmWF52U6vI3j7rafYjZiMJHcy3aBhDDj++VA28=; b=tPguHwwbiBk8diyLdj5vCmSgw0/RZa2sCmkmipsnmQmA7tSCUJofCRBwB5VsOQXerD By32DiLROfjZ6ONKrKQJXoa9GUrdej79lri9PyJYgw+WvQ+7768AtRKYcieyvdWKsqcA qFiyGI3cwE1+jRFSwpUeQOq+dZgsfxeTYIJC8= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=vw/E3lrhGr+DG5nY1a9yQma9mBcvm0keISIzgtG5rW1i0c+efvYMb9ZqWvZnhyHh0A EpHPRfvzAK5Br8YO0ckiZWcztsXzLc4RjZN3ilGDuaCbObFMEIbCZyX4xVSXnDn5yL4C ombqQ6i3DKJsUtES1GZ8ctT+XdFOqfUsR9Tpo= MIME-Version: 1.0 Received: by 10.216.172.9 with SMTP id s9mr3551857wel.56.1287508702183; Tue, 19 Oct 2010 10:18:22 -0700 (PDT) Received: by 10.216.52.16 with HTTP; Tue, 19 Oct 2010 10:18:21 -0700 (PDT) In-Reply-To: References: Date: Tue, 19 Oct 2010 12:18:21 -0500 Message-ID: Subject: Re: Read Latency From: Jonathan Ellis To: user Content-Type: text/plain; charset=ISO-8859-1 I would expect C++ or Java to be substantially faster than Python. However, I note that Hector (and I believe Pelops) don't yet use the newest, fastest Thrift library. On Tue, Oct 19, 2010 at 8:21 AM, Wayne wrote: > The changes seems to do the trick. We are down to about 1/2 of the original > quorum read performance. I did not see any more errors. > > More than 3 seconds on the client side is still not acceptable to us. We > need the data in Python, but would we be better off going through Java or > something else to increase performance? All three seconds are taken up in > Thrift itself (fastbinary.decode_binary(self, iprot.trans, (self.__class__, > self.thrift_spec))) so I am not sure what other options we have. > > Thanks for your help. > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com