Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1b5uuD-0004I1-O2 for pgsql-performance@arkaria.postgresql.org; Thu, 26 May 2016 13:00:53 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1b5uuD-00048f-5S for pgsql-performance@arkaria.postgresql.org; Thu, 26 May 2016 13:00:53 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1b5uuC-00048Y-KP for pgsql-performance@postgresql.org; Thu, 26 May 2016 13:00:52 +0000 Received: from mail-lf0-x236.google.com ([2a00:1450:4010:c07::236]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.84_2) (envelope-from ) id 1b5uu5-0007Fa-LB for pgsql-performance@postgresql.org; Thu, 26 May 2016 13:00:51 +0000 Received: by mail-lf0-x236.google.com with SMTP id b73so9731815lfb.3 for ; Thu, 26 May 2016 06:00:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=leboutique.com; s=google; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=ijUzUshd0e14L3ijuapRt7kWqiIY07logcuIEz31ze4=; b=Bf6n2D9km941r4LdEd98xqmsyG70GKM4ZTUVIed6fi21Rwk6xf52ba23pYEMo+Yggr dlAD3eayaXAZPz04Pukyoku+IiHypaxyCu8y82zbh064eZ3bFfah1TUo6PEh81/WPYra fUrG8VqYR8iVC97dSIiKfZzGCWcPRyDButDQY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=ijUzUshd0e14L3ijuapRt7kWqiIY07logcuIEz31ze4=; b=P6IyMSY5CkTosm+aPV+d62obl/pjHrhJ5xPgenmodl5d+kxNqnK7BUOctKVJwigVkX r5IQYK9/hkY6uS5h5BlqAvKwZ6p2XlWLavJHeIWlJ3xGLUgmTC/JShlcVpdZv9Rf9r0n touX/JlYBNFvQ1gFbPXA7kP5DpTCMemXLuHWQ2bBwZlyS+aS9DBWRaSsb1pv4rLVsF9K afJmoq2iKpJcpLMBY7Yb8Qq+bAUB9Te+cJaidJF4N4zn8V5xAqYt6tjHVlHqaCQs0h4n uKw3LqJcDX66XqXtCcOCayvcoe6IXGPrw2bGuAy4D+K+LaFtGxkbvSf3VPpeXEwdjodY kfrA== X-Gm-Message-State: ALyK8tJhhl8eIrtltE6JV5DxdyDarwZ6cX4AxHWIjdjsXAVLfChopxoRpx/2xGJaqs8DkQS9W38AVkh3XKoj3WIk X-Received: by 10.25.21.40 with SMTP id l40mr2399100lfi.225.1464267643942; Thu, 26 May 2016 06:00:43 -0700 (PDT) MIME-Version: 1.0 Received: by 10.25.18.229 with HTTP; Thu, 26 May 2016 06:00:23 -0700 (PDT) In-Reply-To: <5746F1B3.8080701@zioup.com> References: <57463BAC.2090608@zioup.com> <5746F1B3.8080701@zioup.com> From: Artem Tomyuk Date: Thu, 26 May 2016 16:00:23 +0300 Message-ID: Subject: Re: Testing in AWS, EBS To: Yves Dorfsman Cc: pgsql-performance@postgresql.org Content-Type: multipart/alternative; boundary=001a11407cecc610c80533be600a X-Pg-Spam-Score: -2.7 (--) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org --001a11407cecc610c80533be600a Content-Type: text/plain; charset=UTF-8 Yes, the smaller instance you choose - the slower ebs will be. EBS lives separately from EC2, they are communicating via network. So small instance = low network bandwidth = poorer disk performance. But still strong recommendation to pre-warm your ebs in any case, especially if they created from snapshot. 2016-05-26 15:53 GMT+03:00 Yves Dorfsman : > On 2016-05-25 19:08, Rayson Ho wrote: > > Actually, when "EBS-Optimized" is on, then the instance gets dedicated > > bandwidth to EBS. > > Hadn't realised that, thanks. > Is the EBS bandwidth then somewhat limited depending on the type of > instance too? > > -- > http://yves.zioup.com > gpg: 4096R/32B0F416 > > > > -- > Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-performance > --001a11407cecc610c80533be600a Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Yes, the smaller instance you choose - the slower ebs will= be.=C2=A0
EBS lives separately from EC2, they are communicating via ne= twork. So small instance =3D low network bandwidth =3D poorer disk performa= nce.
But still strong recommendation to pre-warm your ebs in any = case, especially if they created from snapshot.

2016-05-26 15:53 GMT+03:00 Yves D= orfsman <yves@zioup.com>:
On 2016-05-25 19:08, Rayson Ho wrote:
> Actually, when "EBS-Optimized" is on, then the instance gets= dedicated
> bandwidth to EBS.

Hadn't realised that, thanks.
Is the EBS bandwidth then somewhat limited depending on the type of instanc= e too?

--
http= ://yves.zioup.com
gpg: 4096R/32B0F416



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