Return-Path: Delivered-To: apmail-lucene-java-dev-archive@www.apache.org Received: (qmail 38795 invoked from network); 11 Sep 2009 06:51:43 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 11 Sep 2009 06:51:43 -0000 Received: (qmail 44377 invoked by uid 500); 11 Sep 2009 06:51:42 -0000 Delivered-To: apmail-lucene-java-dev-archive@lucene.apache.org Received: (qmail 44304 invoked by uid 500); 11 Sep 2009 06:51:42 -0000 Mailing-List: contact java-dev-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: java-dev@lucene.apache.org Delivered-To: mailing list java-dev@lucene.apache.org Received: (qmail 44296 invoked by uid 99); 11 Sep 2009 06:51:42 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 11 Sep 2009 06:51:42 +0000 X-ASF-Spam-Status: No, hits=2.2 required=10.0 tests=HTML_MESSAGE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of ted.dunning@gmail.com designates 209.85.210.200 as permitted sender) Received: from [209.85.210.200] (HELO mail-yx0-f200.google.com) (209.85.210.200) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 11 Sep 2009 06:51:33 +0000 Received: by yxe38 with SMTP id 38so1081464yxe.6 for ; Thu, 10 Sep 2009 23:51:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :from:date:message-id:subject:to:content-type; bh=LvGr0pBkt0Ilgb4McKkkKSGYvBxC6iEU0dH4VZT/QtI=; b=MXwvW7Hq077e1wPyTCHmYU8rvOh2otCC1Hlb/Yy7DhTRgqdu7zSx3czvtrBi42jPDi eHSYL9TkuMYG1Xat3TyYQm7KjZbbuH20id6MkBnMIu0WlNal0IE0eSenhWlvIQF8BTQ6 yahtT8AJoFIGBrg0NLfWK+kM23k2WGgs4xuxM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; b=rfW1uokeYJXUcf1hzG9cY9BYls7oEdnqOgOfad7aO3KVW56zYsM9CnyH88xqIlrXSN LeWlrKuIXAsnQMHYKNyjdbnnNQhneWokx0ZZ6JRi0z88GreP2QkGQ1A/b/lJsjwjZpmo Y0d9PctlPDllQ1LxFT0O9bxd/8E+636mk7oz8= MIME-Version: 1.0 Received: by 10.150.90.4 with SMTP id n4mr4244427ybb.170.1252651872111; Thu, 10 Sep 2009 23:51:12 -0700 (PDT) In-Reply-To: <25395172.post@talk.nabble.com> References: <25394566.post@talk.nabble.com> <25394937.post@talk.nabble.com> <25395172.post@talk.nabble.com> From: Ted Dunning Date: Thu, 10 Sep 2009 23:50:52 -0700 Message-ID: Subject: Re: Question bout I/O monitoring To: java-dev@lucene.apache.org Content-Type: multipart/alternative; boundary=000e0cd32fa2dd4b49047347bd98 X-Virus-Checked: Checked by ClamAV on apache.org --000e0cd32fa2dd4b49047347bd98 Content-Type: text/plain; charset=UTF-8 You can also integrate the results from iostat on an otherwise idle machine. On Thu, Sep 10, 2009 at 10:24 PM, edwardyf wrote: > > unfortunately i am running a Red hat enterprise version, i am doing an > academic experiment which need number of disk I/Os. > > I am now looking at SystemTap, which is said to be the iosnoop for linux. > thanks for the guide > > > > Brian Pinkerton-2 wrote: > > > > If you're on a Mac or Solaris, dtrace will tell you everything you > > want to know (and more.) If you're not familiar with dtrace, > > iosnoop.d is a good start for this kind of measurement. > > > > At Technorati, I used dtrace to build a trace file of all the read > > requests made by a big lucene app, recording timestamp, file, offset, > > and number of bytes read. Among other things, the measurement led me > > to decrease the heap size of the JVM so that more of the index would > > fit in the file cache. > > > > bri > > > > On Sep 10, 2009, at 9:39 PM, edwardyf wrote: > > > >> > >> Thanks for the reply, just checked the Lucid Gaze package, it only > >> collects > >> the stats at > >> function call level, no I/O stats > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org > > For additional commands, e-mail: java-dev-help@lucene.apache.org > > > > > > > > -- > View this message in context: > http://www.nabble.com/Question-bout-I-O-monitoring-tp25394566p25395172.html > Sent from the Lucene - Java Developer mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org > For additional commands, e-mail: java-dev-help@lucene.apache.org > > -- Ted Dunning, CTO DeepDyve --000e0cd32fa2dd4b49047347bd98 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
You can also integrate the results from iostat on an otherwise idle mac= hine.

On Thu, Sep 10, 2009 at 10:24 PM, e= dwardyf <edwardy= f@gmail.com> wrote:

unfortunately i am running a Red hat enterprise version, i am doing an
academic experiment which need number of disk I/Os.

I am now looking at SystemTap, which is said to be the iosnoop for linux. thanks for the guide



Brian Pinkerton-2 wrote:
>
> If you're on a Mac or Solaris, dtrace will tell you everything you=
> want to know (and more.) =C2=A0If you're not familiar with dtrace,=
> iosnoop.d is a good start for this kind of measurement.
>
> At Technorati, I used dtrace to build a trace file of all the read
> requests made by a big lucene app, recording timestamp, file, offset,<= br> > and number of bytes read. =C2=A0Among other things, the measurement le= d me
> to decrease the heap size of the JVM so that more of the index would > fit in the file cache.
>
> bri
>
> On Sep 10, 2009, at 9:39 PM, edwardyf wrote:
>
>>
>> Thanks for the reply, just checked the Lucid Gaze package, it only=
>> collects
>> the stats at
>> function call level, no I/O stats
>
>
> ---------------------------------------------------------------------<= br> > To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-dev-help@lucene.apache.org
>
>
>

--
View this message in context: http://www.nab= ble.com/Question-bout-I-O-monitoring-tp25394566p25395172.html
Sent from the Lucene - Java Developer mailing list= archive at Nabble.com.


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--
Ted Dunning= , CTO
DeepDyve

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