Red Hat Bugzilla – Bug 465307
System hang on boot
Last modified: 2014-08-11 01:40:53 EDT
Description of problem:
the system (a Sun x4150 with 16GB RAM) locks during boot, when the rtctl service runs to set kernel thread priorities.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Load MRG RT 32-bit kernel
2. Boot system
3. system hangs when rtctl service runs
Customer noted that when /etc/rtgroups line for softirq was changed to priority 65 (as opposed to the 70 value that's delivered) the system boots.
It's been noted that this Sun system isn't the only one that has failed to boot the -rt kernel due to large amounts of ram. Specifically, an HP DL585g5 with 32GB of RAM failed to boot in the perf-lab.
I'm inclined to elevate the severity of this one.
No one has reported this on our 2.6.33-based kernel, so I'm closing. If we hit it again, we can reopen or open a new bug.