On Sat, Jun 28, 2014 at 3:18 AM, Michael Schwendt <mschwe...@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.
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