Hello Tom,
Thanks for the feedback. I am pleased that you got such a nice
improvement in performance. From the numbers you cite, it doesn't seem
likely you will need any of the other ideas for possible performance
improvements :-)
Best regards,
Kern
On 04/21/2017 10:02 AM, Tom Yates wrote:
> On Thu, 13 Apr 2017, Tom Yates wrote:
>
>> On Wed, 12 Apr 2017, Martin Simmons wrote:
>>
>>> Does that file tree have a lot of hard links (I think the add command only
>>> makes those queries for hard links)? If so, then using Bacula 7 might help
>>> (see "restore optimizespeed" in
>>> http://www.bacula.org/downloads/Bacula-7.4.0/ReleaseNotes).
>> That might well be it. "find . -type f -links +1" says that, of the ten
>> million or so files in that tree, around a million have more than one
>> hard link (some have several hundred, don't ask me why).
>>
>> If the client will permit it, I'll investigate "restore optimizespeed" and
>> report back. Thank you!
> So it turns out that going to 7.4.7 was enough. The FD clients all stayed
> on CentOS 6's 5.0.0, and seem to be fine (though testing continues).
> "optimizespeed=true" seems to be the default in 7.x; in the first test the
> upgrade cut the time for the "add home" phase from twenty-some HOURS to
> about eight SECONDS. We have made no further changes, though we
> gratefully note Kern's list of other improvements we could make if things
> start to drag again.
>
> Thanks to all, but especially Martin and Kern, for help with this.
> Bacula's back on the menu!
>
>
> Tom Yates
> Cambridge, UK.
>
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