Re: kern/38970: slow crashdump on amd64 machine

[christos%zoulas.com@localhost (Christos Zoulas)]

The following reply was made to PR kern/38970; it has been noted by GNATS.

From: christos%zoulas.com@localhost (Christos Zoulas)
To: gnats-bugs%NetBSD.org@localhost, kern-bug-people%netbsd.org@localhost, 
        gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost, 
        Simon Burge <simonb%NetBSD.org@localhost>
Cc: 
Subject: Re: kern/38970: slow crashdump on amd64 machine
Date: Fri, 19 Jul 2013 11:06:56 -0400

 On Jul 19,  2:25pm, gson%gson.org@localhost (Andreas Gustafsson) wrote:
 -- Subject: Re: kern/38970: slow crashdump on amd64 machine
 
 | The following reply was made to PR kern/38970; it has been noted by GNATS.
 | 
 | From: Andreas Gustafsson <gson%gson.org@localhost>
 | To: gnats-bugs%NetBSD.org@localhost
 | Cc: 
 | Subject: Re: kern/38970: slow crashdump on amd64 machine
 | Date: Fri, 19 Jul 2013 17:23:09 +0300
 | 
 |  As I write this, I am waiting for a NetBSD 6.x/amd64 machine to finish
 |  a crash dump.  I have plenty of time to write, because it's dumping at
 |  a rate of about 1 MB/s, which means dumping 16 GB of RAM is going to
 |  take more than four hours.
 |  
 |  As in the case of the original bug submitter, the dump target is a
 |  Seagate SATA disk.
 |  
 |  I will bump the priority of the PR, because this bug is now affecting
 |  multiple users and is a serious impediment to the diagnosis and fixing
 |  of kernel crashes.
 |  -- 
 |  Andreas Gustafsson, gson%gson.org@localhost
 
 Are sparse dumps enabled and working?
 
 christos