On 10/9/2016 11:18 AM, John Andersen wrote:
Thanks John for the thought, I tried adding the iomem=relaxed option to
the kernel options using the Yast Boot Loader tool, rebooted, and still
no joy...
In my fooling around with this issue, I have come across something that
definitely triggers high CPU usage, and could be a clue. Although I cannot definitively say this is the smoking gun because I see high system CPU usage going on regardless of whether I do this or not -
There is something very wrong going on when I use Dolphin to move stuff
to the trash "Recycle Bin" (or sometimes it appears when I use Dolphin to simply move files from one location to another, i.e. drag and drop) and/or when I tell Dolphin to empty the trash. Doing so kicks off the 100% CPU usage and I hear the processor cooling fans kick into high speed. These tasks can take hours or even days to complete (if ever, some are still going on for over a week now. When I reboot the system, these tasks are not initially restarted, but if I do something like open the Recycle Bin to see if the files are still in it (after I told Dolphin to empty the trash) then these processes again kick off and the
CPU usage goes up to 100%. The two (or more) spawned processes of interest are file.so and trash.so. However, unlike my original report and observations, these processes do report very high CPU usage also in
the Process Table tab of KSystemGuard, top, atop, and htop so I am not 100% certain that this is related to the issue I reported - about something hidden is causing high CPU usage.
Of interest also is doing file moves or deletes from the command line, i.e. using the mv, rm, and rmdir commands does not cause this high CPU usage to occur and those commands complete in a reasonable amount of time.
Marc...
Still sounds like a disk hardware problem to me. Trash is limited to some percentage of disk , and there shouldn't be any reason that delete operation would take that much time.
But I suppose it's still possible a horribly corrupted file system could be at fault, but if you never see errors that seems unlikely.
Is it still slow when you unplug / shut down your network connections (physically unplug the cat5) ?
Yeah John, I am kinda thinking you are right, something fishy with the file system or disk drives. Carlo's question seems to imply he is also thinking in that direction. I tried to dd clone the one drive that has reported errors and that failed apparently with a lot of disk read errors. So I need to figure out a way to copy everything from that drive to a new one and perhaps change the file system type of the partitions to a better choice. So first question I have is what file system should I choose and if I want to copy everything from the old drive with a partition using a file system of one type, to a new drive with a partition using a different type of a file system, how best to do so? Doesn't look like dd would be a good choice of a tool to use.... Also, I am going to want to preserve the MBR in the process. Thanks again for your thoughts and assistance... Marc... -- "The Truth is out there" - Spooky -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org