Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 53589 invoked from network); 29 Apr 2010 11:13:30 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 29 Apr 2010 11:13:30 -0000 Received: (qmail 35945 invoked by uid 500); 29 Apr 2010 11:13:28 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 35795 invoked by uid 500); 29 Apr 2010 11:13:26 -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 35785 invoked by uid 500); 29 Apr 2010 11:13:26 -0000 Delivered-To: apmail-incubator-cassandra-user@incubator.apache.org Received: (qmail 35780 invoked by uid 99); 29 Apr 2010 11:13:25 -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 11:13:25 +0000 X-ASF-Spam-Status: No, hits=1.1 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 11:13:19 +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 14:12:57 +0300 Received: from LTEXC001.adform.com ([192.168.3.162]) by LTEXC001.adform.com ([192.168.3.162]) with mapi; Thu, 29 Apr 2010 14:12:56 +0300 From: Viktor Jevdokimov To: "cassandra-user@incubator.apache.org" Date: Thu, 29 Apr 2010 14:12:53 +0300 Subject: Cassandra on Windows network latency Thread-Topic: Cassandra on Windows network latency Thread-Index: AcrnjOnXLo2E4zIwTuGUHmVkP4bUJw== Message-ID: 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_E9ACE71FFA2C07489EB082E48239F9C70DF41D11A0LTEXC001adfor_" MIME-Version: 1.0 --_000_E9ACE71FFA2C07489EB082E48239F9C70DF41D11A0LTEXC001adfor_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable 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_E9ACE71FFA2C07489EB082E48239F9C70DF41D11A0LTEXC001adfor_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi all,

We have installed Cassandra on Wind= ows and found that with any number of Cassandra (single, or 3 node cluster) on Wind= ows Vista or Windows Server 2008, 32 or 64 bit, with any load or number of requ= ests we, have:

When client and server are on the s= ame machine, connect/read/write latencies ~0-1ms

When client on another machine, sam= e network, on the same switch, connection latency 0-1ms (as a ping), read/wri= te latencies >=3D200ms.

What causes 200ms latency accessing= Cassandra on Windows through network? Does anybody experience such behavior?

Cassandra 0.6.1

Java SE 6 u20

Best regards,

Viktor

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