Issue #2610 has been updated by t_dfbsd.

In case I wasn't completely clear, the issue is the time it takes to make the 
connection for a new ssh session.  I timed one and it took over 5 minutes to 
get me to the shell prompt.  Once I'm logged in, the new ssh connection 
responds normally.

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Bug #2610: Hammer mirror copy causes extreme slowdown on new ssh connections
http://bugs.dragonflybsd.org/issues/2610#change-11664

* 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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