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Posted to dev@couchdb.apache.org by "Chris Stockton (JIRA)" <ji...@apache.org> on 2010/07/29 01:22:17 UTC

[jira] Created: (COUCHDB-839) Couchdb startup script should support a erl startup options flag

Couchdb startup script should support a erl startup options flag
----------------------------------------------------------------

                 Key: COUCHDB-839
                 URL: https://issues.apache.org/jira/browse/COUCHDB-839
             Project: CouchDB
          Issue Type: Improvement
          Components: Build System
    Affects Versions: 0.11.1
         Environment: Linux, cent-os, any
            Reporter: Chris Stockton
            Priority: Minor


It seems that the couchdb script does not support any options to pass to the erlang vm. Would be nice to allow a options flag and document on the wiki that it exists. It is important because large-scale deployments of couchdb need to pass some limits on to erlang. For example, I am using a -O option of: -O "+P 65536 -env ERL_MAX_ETS_TABLES 60000 -env ERL_MAX_PORTS 60000"

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[jira] Updated: (COUCHDB-839) [PATCH] Couchdb startup script should support a erl startup options flag

Posted by "Chris Stockton (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/COUCHDB-839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Stockton updated COUCHDB-839:
-----------------------------------

    Summary: [PATCH] Couchdb startup script should support a erl startup options flag  (was: Couchdb startup script should support a erl startup options flag)

> [PATCH] Couchdb startup script should support a erl startup options flag
> ------------------------------------------------------------------------
>
>                 Key: COUCHDB-839
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-839
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Build System
>    Affects Versions: 0.11.1
>         Environment: Linux, cent-os, any
>            Reporter: Chris Stockton
>            Priority: Minor
>         Attachments: couchdb.tpl.in.patch
>
>
> It seems that the couchdb script does not support any options to pass to the erlang vm. Would be nice to allow a options flag and document on the wiki that it exists. It is important because large-scale deployments of couchdb need to pass some limits on to erlang. For example, I am using a -O option of: -O "+P 65536 -env ERL_MAX_ETS_TABLES 60000 -env ERL_MAX_PORTS 60000"

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[jira] Commented: (COUCHDB-839) [PATCH] Couchdb startup script should support a erl startup options flag

Posted by "Randall Leeds (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/COUCHDB-839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12893424#action_12893424 ] 

Randall Leeds commented on COUCHDB-839:
---------------------------------------

I've brought this up a couple of times and it was shot down for the following reason.

On a system that utilizes /etc/defaults/couchdb or similar you can export ERL_FLAGS or ERL_AFLAGS environment there. Similarly, you can export ERL_MAX_PORTS or ERL_MAX_ETS_TABLES directly rather than pass them as flags.

On a less straightforwardly supported init setup it's on you to create your own wrapper script to do this.

> [PATCH] Couchdb startup script should support a erl startup options flag
> ------------------------------------------------------------------------
>
>                 Key: COUCHDB-839
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-839
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Build System
>    Affects Versions: 0.11.1
>         Environment: Linux, cent-os, any
>            Reporter: Chris Stockton
>            Priority: Minor
>         Attachments: couchdb.tpl.in.patch
>
>
> It seems that the couchdb script does not support any options to pass to the erlang vm. Would be nice to allow a options flag and document on the wiki that it exists. It is important because large-scale deployments of couchdb need to pass some limits on to erlang. For example, I am using a -O option of: -O "+P 65536 -env ERL_MAX_ETS_TABLES 60000 -env ERL_MAX_PORTS 60000"

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[jira] Updated: (COUCHDB-839) Couchdb startup script should support a erl startup options flag

Posted by "Chris Stockton (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/COUCHDB-839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Stockton updated COUCHDB-839:
-----------------------------------

    Attachment: couchdb.tpl.in.patch

Here is a simple patch demonstrating the inclusion of a -O option. Note due to limitations of the current use of getopt (spaces) for simplicity I swapped it out with getopts. This shouldn't be a issue as browsing around I already see other bash/sh idioms that would cause issues for csh'ish systems.

-Chris

> Couchdb startup script should support a erl startup options flag
> ----------------------------------------------------------------
>
>                 Key: COUCHDB-839
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-839
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Build System
>    Affects Versions: 0.11.1
>         Environment: Linux, cent-os, any
>            Reporter: Chris Stockton
>            Priority: Minor
>         Attachments: couchdb.tpl.in.patch
>
>
> It seems that the couchdb script does not support any options to pass to the erlang vm. Would be nice to allow a options flag and document on the wiki that it exists. It is important because large-scale deployments of couchdb need to pass some limits on to erlang. For example, I am using a -O option of: -O "+P 65536 -env ERL_MAX_ETS_TABLES 60000 -env ERL_MAX_PORTS 60000"

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[jira] Commented: (COUCHDB-839) [PATCH] Couchdb startup script should support a erl startup options flag

Posted by "Randall Leeds (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/COUCHDB-839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894638#action_12894638 ] 

Randall Leeds commented on COUCHDB-839:
---------------------------------------

Actually, Chris, all the flags can be set via exports.

See `man erl` and look for ENVIRONMENT VARIABLES at the bottom.

ERL_AFLAGS or ERL_ZFLAGS are what you want.

> [PATCH] Couchdb startup script should support a erl startup options flag
> ------------------------------------------------------------------------
>
>                 Key: COUCHDB-839
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-839
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Build System
>    Affects Versions: 0.11.1
>         Environment: Linux, cent-os, any
>            Reporter: Chris Stockton
>            Priority: Minor
>         Attachments: couchdb.tpl.in.patch
>
>
> It seems that the couchdb script does not support any options to pass to the erlang vm. Would be nice to allow a options flag and document on the wiki that it exists. It is important because large-scale deployments of couchdb need to pass some limits on to erlang. For example, I am using a -O option of: -O "+P 65536 -env ERL_MAX_ETS_TABLES 60000 -env ERL_MAX_PORTS 60000"

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[jira] Commented: (COUCHDB-839) [PATCH] Couchdb startup script should support a erl startup options flag

Posted by "Chris Stockton (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/COUCHDB-839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894644#action_12894644 ] 

Chris Stockton commented on COUCHDB-839:
----------------------------------------

Thank you much Randall, whenever I tried those with +P with a interactive shell, it wouldn't actually modify the process limit. I will try some more to see if I can figure this out since you verified it should be possible likely a user error.

> [PATCH] Couchdb startup script should support a erl startup options flag
> ------------------------------------------------------------------------
>
>                 Key: COUCHDB-839
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-839
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Build System
>    Affects Versions: 0.11.1
>         Environment: Linux, cent-os, any
>            Reporter: Chris Stockton
>            Priority: Minor
>         Attachments: couchdb.tpl.in.patch
>
>
> It seems that the couchdb script does not support any options to pass to the erlang vm. Would be nice to allow a options flag and document on the wiki that it exists. It is important because large-scale deployments of couchdb need to pass some limits on to erlang. For example, I am using a -O option of: -O "+P 65536 -env ERL_MAX_ETS_TABLES 60000 -env ERL_MAX_PORTS 60000"

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[jira] Closed: (COUCHDB-839) [PATCH] Couchdb startup script should support a erl startup options flag

Posted by "Noah Slater (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/COUCHDB-839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Noah Slater closed COUCHDB-839.
-------------------------------

    Resolution: Won't Fix

Thanks for the patch, but environment variables are the way to go.

I would accept a patch to improve the documentation about how to use environment variables.

> [PATCH] Couchdb startup script should support a erl startup options flag
> ------------------------------------------------------------------------
>
>                 Key: COUCHDB-839
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-839
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Build System
>    Affects Versions: 0.11.1
>         Environment: Linux, cent-os, any
>            Reporter: Chris Stockton
>            Priority: Minor
>         Attachments: couchdb.tpl.in.patch
>
>
> It seems that the couchdb script does not support any options to pass to the erlang vm. Would be nice to allow a options flag and document on the wiki that it exists. It is important because large-scale deployments of couchdb need to pass some limits on to erlang. For example, I am using a -O option of: -O "+P 65536 -env ERL_MAX_ETS_TABLES 60000 -env ERL_MAX_PORTS 60000"

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[jira] Closed: (COUCHDB-839) [PATCH] Couchdb startup script should support a erl startup options flag

Posted by "Chris Stockton (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/COUCHDB-839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Stockton closed COUCHDB-839.
----------------------------------

    Resolution: Not A Problem

Re-Closing.

> [PATCH] Couchdb startup script should support a erl startup options flag
> ------------------------------------------------------------------------
>
>                 Key: COUCHDB-839
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-839
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Build System
>    Affects Versions: 0.11.1
>         Environment: Linux, cent-os, any
>            Reporter: Chris Stockton
>            Priority: Minor
>         Attachments: couchdb.tpl.in.patch
>
>
> It seems that the couchdb script does not support any options to pass to the erlang vm. Would be nice to allow a options flag and document on the wiki that it exists. It is important because large-scale deployments of couchdb need to pass some limits on to erlang. For example, I am using a -O option of: -O "+P 65536 -env ERL_MAX_ETS_TABLES 60000 -env ERL_MAX_PORTS 60000"

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[jira] Reopened: (COUCHDB-839) [PATCH] Couchdb startup script should support a erl startup options flag

Posted by "Chris Stockton (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/COUCHDB-839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Stockton reopened COUCHDB-839:
------------------------------------


Hello,

I believe you would be very correct that those two specific flags may be passed through exports. Certain other arguments may also be influenced by switches. (+Bd I.E.). However, it should be understood before closing this that the emulator supports many other flags some of which for certain systems and setups may require flags outside the afore-mentioned. Such as +P, or for some setups defining the CPU topology may be desired. I am unaware of how to get these results without this (or similar) modification or scrapping the couchdb script all together.

-Chris

> [PATCH] Couchdb startup script should support a erl startup options flag
> ------------------------------------------------------------------------
>
>                 Key: COUCHDB-839
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-839
>             Project: CouchDB
>          Issue Type: Improvement
>          Components: Build System
>    Affects Versions: 0.11.1
>         Environment: Linux, cent-os, any
>            Reporter: Chris Stockton
>            Priority: Minor
>         Attachments: couchdb.tpl.in.patch
>
>
> It seems that the couchdb script does not support any options to pass to the erlang vm. Would be nice to allow a options flag and document on the wiki that it exists. It is important because large-scale deployments of couchdb need to pass some limits on to erlang. For example, I am using a -O option of: -O "+P 65536 -env ERL_MAX_ETS_TABLES 60000 -env ERL_MAX_PORTS 60000"

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