Plugins » Katello

On my RHEL6 based VM running the latest nightly build of Katello I noticed that the dynflow process was consuming lots of CPU:

installed: ruby193-rubygem-dynflow-0.7.7-1.el6.noarch

top - 14:25:03 up 3:56, 1 user, load average: 1.09, 1.12, 1.28
Tasks: 129 total, 2 running, 127 sleeping, 0 stopped, 0 zombie
Cpu(s): 84.2%us, 15.8%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si,
Mem: 7865288k total, 7257996k used, 607292k free, 201936k buffers
Swap: 2097144k total, 0k used, 2097144k free, 4675568k cached

PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND    
 2466 foreman   20   0  485m 104m 1144 R 97.5  1.4  24:44.50 ruby       
 1883 tomcat    20   0 2968m 266m  12m S  1.0  3.5   0:44.53 java       
...

running strace on the process yields pages and pages of:

stat("/usr/share/foreman/tmp/pids/dynflow_executor.pid", {st_mode=S_IFREG|0644, st_size=5, ...}) = 0
open("/usr/share/foreman/tmp/pids/dynflow_executor.pid", O_RDONLY) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=5, ...}) = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=5, ...}) = 0
ioctl(5, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fffc1de3b50) = -1 ENOTTY (Inappropriate ioctl for device)
read(5, "2566\n", 8192) = 5
close(5) = 0
kill(2566, SIG_0) = 0
stat("/usr/share/foreman/tmp/pids/dynflow_executor.pid", {st_mode=S_IFREG|0644, st_size=5, ...}) = 0
open("/usr/share/foreman/tmp/pids/dynflow_executor.pid", O_RDONLY) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=5, ...}) = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=5, ...}) = 0
ioctl(5, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fffc1de3b50) = -1 ENOTTY (Inappropriate ioctl for device)
read(5, "2566\n", 8192) = 5
close(5) = 0
kill(2566, SIG_0) = 0
stat("/usr/share/foreman/tmp/pids/dynflow_executor.pid", {st_mode=S_IFREG|0644, st_size=5, ...}) = 0
...