Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 55973 invoked from network); 29 Apr 2010 11:25:30 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 29 Apr 2010 11:25:30 -0000 Received: (qmail 45390 invoked by uid 500); 29 Apr 2010 11:25:30 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 45303 invoked by uid 500); 29 Apr 2010 11:25:29 -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 45289 invoked by uid 99); 29 Apr 2010 11:25:28 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 29 Apr 2010 11:25:28 +0000 X-ASF-Spam-Status: No, hits=1.6 required=10.0 tests=AWL,HTML_MESSAGE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [213.190.51.142] (HELO mail.adform.com) (213.190.51.142) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 29 Apr 2010 11:25:22 +0000 Received: from LTEXC001.adform.com (192.168.3.162) by mail.adform.com (192.168.3.246) with Microsoft SMTP Server (TLS) id 8.1.393.1; Thu, 29 Apr 2010 14:25:01 +0300 Received: from LTEXC001.adform.com ([192.168.3.162]) by LTEXC001.adform.com ([192.168.3.162]) with mapi; Thu, 29 Apr 2010 14:25:00 +0300 From: Viktor Jevdokimov To: "user@cassandra.apache.org" Date: Thu, 29 Apr 2010 14:24:59 +0300 Subject: RE: Cassandra on Windows network latency Thread-Topic: Cassandra on Windows network latency Thread-Index: AcrnjZ6PfkqCh5UpS6y+Xc/WulqfdQAALUXQ Message-ID: References: In-Reply-To: Accept-Language: en-US, lt-LT Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US, lt-LT Content-Type: multipart/alternative; boundary="_000_E9ACE71FFA2C07489EB082E48239F9C70DF41D11B3LTEXC001adfor_" MIME-Version: 1.0 --_000_E9ACE71FFA2C07489EB082E48239F9C70DF41D11B3LTEXC001adfor_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Thrift C# sources, thrift generated Cassandra sources, test app built with = C#. Simple connect/write/read operations. No pooling or anything else. From: Heath Oderman [mailto:heath@526valley.com] Sent: Thursday, April 29, 2010 2:17 PM To: user@cassandra.apache.org Subject: Re: Cassandra on Windows network latency I learned the hard way, that running py_stress in the src/contrib directory= is a great way to test what kind of speeds you are really getting. What tools / client are you using to test to get the 200ms number? stu On Thu, Apr 29, 2010 at 7:12 AM, Viktor Jevdokimov > wrote: Hi all, We have installed Cassandra on Windows and found that with any number of Ca= ssandra (single, or 3 node cluster) on Windows Vista or Windows Server 2008= , 32 or 64 bit, with any load or number of requests we, have: When client and server are on the same machine, connect/read/write latencie= s ~0-1ms When client on another machine, same network, on the same switch, connectio= n latency 0-1ms (as a ping), read/write latencies >=3D200ms. What causes 200ms latency accessing Cassandra on Windows through network? D= oes anybody experience such behavior? Cassandra 0.6.1 Java SE 6 u20 Best regards, Viktor --_000_E9ACE71FFA2C07489EB082E48239F9C70DF41D11B3LTEXC001adfor_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Thrift C# sources, thrift generated Cassandra sources, test = app built with C#. Simple connect/write/read operations. No pooling or anything else.

 

From: Heath Oderman [mailto:heath@526valley.c= om]
Sent: Thursday, April 29, 2010 2:17 PM
To: user@cassandra.apache.org
Subject: Re: Cassandra on Windows network latency<= /p>

 

I learned the hard way, that running py_stress in the src/contrib directory is a great way to test what kind of speeds you are re= ally getting.

 

What tools / client are you using to test to get the 2= 00ms number?

 

--_000_E9ACE71FFA2C07489EB082E48239F9C70DF41D11B3LTEXC001adfor_--