On Sat, Jun 28, 2014 at 3:18 AM, Michael Schwendt mschwendt@gmail.com wrote:
On Fri, 27 Jun 2014 17:02:20 -0600, JD wrote:
FC20.
I ran yum -y update. After all the files were downloaded, the delta processing started. From there on, all the way through to the end of installation and cleanup, cpu was 99.99% taken up by the update process, and the entire desktop became unresponsive. I was unable to switch display windows, of which I had 6.
The update had downloaded a total of 161MB, for a total of about 30 updates, most of them wine related.
The machine is a dual core Intel running at 2.4GHz, with 4GB ram.
CPU speed and 99% usage shouldn't be the problem here. Rather a bottleneck related to massive I/O and slow storage? Or an odd case of heavy memory usage that lead to swapping.
Heavy I/O should at most create an I/O bottleneck, since a process waiting either for free buffer of waiting for I/O completion does not consume cpu, as it is put to sleep until awakened by a signal that the requested buffer is available, or the I/O completed. The next time I do an update, I will also run top and iotop and take periodic screen snapshots and will upload the images to a public storage and provide the URL for all to see.