I have a Raspberry Pi running Raspbian Wheezy headlessly with all graphics-related software uninstalled.
I have bitcoind running, which is mostly consuming most of the resources. Usually, when I check the processes via
top, I can see that only
bitcoind uses a significant amount of resources, with
top on second and third place or so.
For some reason, currently, a new process starts peaking in resource usage, called
mmcqd/0. It often uses up to 55% of CPU power in peaks and stays at a constant of around 5% otherwise.
What does this process do?
I have read that this may be caused by a slow SD card, but I tested my read/write speeds and got >15MB/s for both (I got a 32GB class 10 SD card).