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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-5484) [linearstore] Poor performance relative to legacystore
Date Wed, 15 Jan 2014 22:34:19 GMT

    [ https://issues.apache.org/jira/browse/QPID-5484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13872711#comment-13872711

ASF subversion and git services commented on QPID-5484:

Commit 1558592 from [~kpvdr] in branch 'qpid/trunk'
[ https://svn.apache.org/r1558592 ]

QPID-5484 [linearstore] Poor performance relative to legacystore. Partial fix: The use of
/dev/random exhausts the kernel's supply of non-deterministic random data, and calls to read
from it block until enough is available. It has been determined that /dev/urandom is good
enough for this use-case (Journal serial numbers), and does not suffer from blocking.

> [linearstore] Poor performance relative to legacystore
> ------------------------------------------------------
>                 Key: QPID-5484
>                 URL: https://issues.apache.org/jira/browse/QPID-5484
>             Project: Qpid
>          Issue Type: Bug
>          Components: C++ Broker
>            Reporter: Kim van der Riet
>            Assignee: Kim van der Riet
> The linearstore performance is poor compared to the legacystore. As linearstore has similar
architecture to legacy store (except for file management), the performance ought to be comparable.

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