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Date: Wed, 25 Sep 2013 13:34:02 +0000 (UTC)
From: =?utf-8?Q?Ren=C3=A9_R=C3=B6ssler_=28JIRA=29?= <jira@apache.org>
To: dev@couchdb.apache.org
Message-ID: <JIRA.12670481.1380115852223.16263.1380116042455@arcas>
In-Reply-To: <JIRA.12670481.1380115852223@arcas>
References: <JIRA.12670481.1380115852223@arcas>
Subject: [jira] [Updated] (COUCHDB-1895) Heartbeat does not always start
 after connection is established
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     [ https://issues.apache.org/jira/browse/COUCHDB-1895?page=3Dcom.atlass=
ian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ren=C3=A9 R=C3=B6ssler updated COUCHDB-1895:
----------------------------------

    Description:=20
I have a database with ~5000 documents and a update sequence of ~100,000.
If I start a filtered, continuous changes stream with heartbeat set to 1000=
, I get the first heartbeat after ~1 seconds.
If I start the same changes stream with a heartbeat of 10,000, I get the fi=
rst heartbeat after ~10 seconds.
But if I start the same changes stream with a heartbeat of 10,000, I get th=
e first heartbeat after ~57 seconds and the second heartbeat ~2 seconds lat=
er.
Getting all the changes without a continuous feed takes about 15 seconds.

I measured the timings with this command:

bq. date && wget --quiet "http://localhost:5984/database/_changes?filter=3D=
design/filter&feed=3Dcontinuous&heartbeat=3D30000&since=3D0" -O /dev/stdout=
 |perl timing.pl

{code:title=3Dtiming.pl|borderStyle=3Dsolid}
#!/usr/bin/perl

use POSIX qw(strftime);

while(!eof(STDIN))
{
        $line=3D<STDIN>;
        print strftime("%F %T", localtime), $line;
}
{code}

Couchdb is version 1.4.0 installed via homebrew on Mac OS 10.8.5.

  was:
I have a database with ~5000 documents and a update sequence of ~100,000.
If I start a filtered, continuous changes stream with heartbeat set to 1000=
, I get the first heartbeat after ~1 seconds.
If I start the same changes stream with a heartbeat of 10,000, I get the fi=
rst heartbeat after ~10 seconds.
But if I start the same changes stream with a heartbeat of 10,000, I get th=
e first heartbeat after ~57 seconds and the second heartbeat ~2 seconds lat=
er.
Getting all the changes without a continuous feed takes about 15 seconds.

I measured the timings with this command:

bq. date && wget --quiet "http://localhost:5984/database/_changes?filter=3D=
design/filter&feed=3Dcontinuous&heartbeat=3D30000&since=3D0" -O /dev/stdout=
 |perl timing.pl

{code:title=3Dtiming.pl|borderStyle=3Dsolid}
#!/usr/bin/perl

use POSIX qw(strftime);

while(!eof(STDIN))
{
        $line=3D<STDIN>;
        print strftime("%F %T", localtime), $line;
}
{code}

Couchdb is version 1.4.0 installed via homebrew on is Mac OS 10.8.5.

   =20
> Heartbeat does not always start after connection is established
> ---------------------------------------------------------------
>
>                 Key: COUCHDB-1895
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1895
>             Project: CouchDB
>          Issue Type: Bug
>          Components: HTTP Interface
>            Reporter: Ren=C3=A9 R=C3=B6ssler
>
> I have a database with ~5000 documents and a update sequence of ~100,000.
> If I start a filtered, continuous changes stream with heartbeat set to 10=
00, I get the first heartbeat after ~1 seconds.
> If I start the same changes stream with a heartbeat of 10,000, I get the =
first heartbeat after ~10 seconds.
> But if I start the same changes stream with a heartbeat of 10,000, I get =
the first heartbeat after ~57 seconds and the second heartbeat ~2 seconds l=
ater.
> Getting all the changes without a continuous feed takes about 15 seconds.
> I measured the timings with this command:
> bq. date && wget --quiet "http://localhost:5984/database/_changes?filter=
=3Ddesign/filter&feed=3Dcontinuous&heartbeat=3D30000&since=3D0" -O /dev/std=
out |perl timing.pl
> {code:title=3Dtiming.pl|borderStyle=3Dsolid}
> #!/usr/bin/perl
> use POSIX qw(strftime);
> while(!eof(STDIN))
> {
>         $line=3D<STDIN>;
>         print strftime("%F %T", localtime), $line;
> }
> {code}
> Couchdb is version 1.4.0 installed via homebrew on Mac OS 10.8.5.

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