glibc upgrade causing erratic behaviour

Solution Unverified - Updated -

Issue

  • After major downtime to upgrade glibc, some HP Gen8 servers show erratic behavior
  • We just upgraded glibc. Most (but not all) systems had this issue where it showed erratic issues, like NFS not working (and needing hard reset). Some show bad output with top/ps/w (example below), while a few are all OK. These are identical HP Blades.

Note the total time for processes like init, etc:

top - 14:50:50 up 22 min,  1 user,  load average: 1.51, 0.49, 0.17
Tasks: 643 total,   3 running, 640 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.1%us,  0.2%sy,  0.0%ni, 99.7%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:  132128672k total,  1189956k used, 130938716k free,    83980k buffers
Swap:        0k total,        0k used,        0k free,   171908k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND           
61856 root      20   0 13536 1540  812 R  1.9  0.0   0:00.02 top                
    1 root      20   0 19364 1544 1232 S  0.0  0.0  9501929h init               
    2 root      20   0     0    0    0 S  0.0  0.0 840544,08 kthreadd           
    3 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/0        
    4 root      20   0     0    0    0 S  0.0  0.0 10237405h ksoftirqd/0        
    5 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/0        
    6 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 watchdog/0         
    7 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/1        
    8 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/1        
    9 root      20   0     0    0    0 S  0.0  0.0  45029,09 ksoftirqd/1        
   10 root      RT   0     0    0    0 S  0.0  0.0 300194:20 watchdog/1         
   11 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/2        
   12 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/2        
   13 root      20   0     0    0    0 S  0.0  0.0 300194:20 ksoftirqd/2        
   14 root      RT   0     0    0    0 S  0.0  0.0 300194:20 watchdog/2         
   15 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/3        
   16 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/3

Environment

  • Red Hat Enterprise Linux 6.4

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