On 09/06/2014 02:57 PM, John R Pierce wrote:
> On 9/6/2014 11:06 AM, Valeri Galtsev wrote:
>>
> and my experience is, kickstart installs off a reasonably fast NFS
> server over gigE are /way/ faster than CDROM/DVDROM installs.
>
which totally makes sense (stolen from wikipedia):
CD, DVD and Blu-ray writing speeds
Media 1X speed Capacity
Mbit/s kB/s KiB/s
CD 1.229 153.6 150.0 0.734 80
DVD 11.080 1,385.0 1,352.5 4.7 57
Blu-ray Disc 36.000 4,500.0 4,394.5 25.0 93
so even with with 8x dvd, that's only [optimally] 88Mbit/s
vs around 6-700 (assuming collisions and generally unable to
push an ethernet network to it's theoretical max)
I only mention it because it floored me when someone at
work brought up the other day that a splunk cluster got
faster performance by getting data by going to network
to get info from another cluster host's memory rather than
going to its own local disk for the same data