On Nov 10, 2014, at 11:26 PM, George R Goffe <grgo...@yahoo.com> wrote:
> Hi,
>
> I have some large ext4 filesystems with large numbers of files in them and
> performance really sucks. After inactivity, a simple ls takes minutes to
> complete. I'm pretty sure the drive is now powering itself down due to this
> inactivity.
>
>
> Are there tuning parameters that I could alter that would keep more of the
> filesystem meta data in memory? It looks like the data slowly migrates back
> to disk and as a result, takes minutes to fill back up enough to respond.
>
> Regards and THANKS for your help and your time,
It could be fragmentation or it could be non-optimal directory structure. When
was the last fsck -f performed? It will optimize directories as needed, but can
be forced with -D but I’d ask on the ext4 list before using it. And e4defrag -c
can be used to get a fragmentation score, which can be run on a file or a
directory.
http://vger.kernel.org/vger-lists.html#linux-ext4
Chris Murphy
--
users mailing list
users@lists.fedoraproject.org
To unsubscribe or change subscription options:
https://admin.fedoraproject.org/mailman/listinfo/users
Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
Have a question? Ask away: http://ask.fedoraproject.org
