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List:       dragonfly-bugs
Subject:    [DragonFlyBSD - Bug #2610] (New) Hammer mirror copy causes extreme slowdown on new ssh connections
From:       bugtracker-admin () leaf ! dragonflybsd ! org
Date:       2013-11-30 20:53:32
Message-ID: redmine.issue-2610.20131130205332 () leaf ! dragonflybsd ! org
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Issue #2610 has been reported by t_dfbsd.

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Bug #2610: Hammer mirror copy causes extreme slowdown on new ssh connections
http://bugs.dragonflybsd.org/issues/2610

* Author: t_dfbsd
* Status: New
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
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I ssh into the machine to do a mirror copy or mirror stream from a master PFS on a \
SATA drive to a newly created slave PFS on a different SATA drive (both drives are \
encrypted).  During the mirror copy everything seems fine and the SSH session I'm in \
seems responsive enough.   CPU usage as reported by top doesn't exceed 40%.

If I try to make a new SSH session right after the mirror copy starts it works \
normally.  However, a few minutes after the mirror copy starts, any attempt to SSH \
takes a vey long time to connect.  It appears that other types of network \
connections, like SMB are similarly affected.  There is no activity on the box other \
than the mirror copy or stream.  If I kill that, then things return to normal.


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