Hi there,
I'm using a fresh debain squeeze system and just installed latest jenkings
(1.473) using the official debian package.
It's working great so far, but even when idle jenkins constantly consumes
100 - 200% cpu (8 cores). No jobs are running, no polling i happening
(nothing configured), no "special" plugins are used...
jenkins 11653 0.0 0.0 18196 540 ? S 11:46 0:00
/usr/bin/daemon --name=jenkins --inherit
--env=JENKINS_HOME=/var/lib/jenkins --output=/var/log/jenkins/jenkins.log
--pidfile=/var/run/jenkins/jenkins.pid -- /usr/bin/java
-Djava.net.preferIPv4Stack=true -jar /usr/share/jenkins/jenkins.war
--webroot=/var/run/jenkins/war --httpPort=8080 --ajp13Port=-1
--httpListenAddress=127.0.0.1
jenkins 11655 178 14.1 1040216 297320 ? Sl 11:46 16:37
/usr/bin/java -Djava.net.preferIPv4Stack=true -jar
/usr/share/jenkins/jenkins.war --webroot=/var/run/jenkins/war
--httpPort=8080 --ajp13Port=-1 --httpListenAddress=127.0.0.1
To debug this a little I looked at jenkings threads and it seems that 3-4
threads are constantly running. Strace of any of these threads shows several
futex(0x7f11dc007c28, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f11dc007c54, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1,
{1341568603, 555590000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
futex(0x7f11dc007c28, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f11dc007c54, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1,
{1341568603, 555684000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
futex(0x7f11dc007c28, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f11dc007c54, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1,
{1341568603, 555776000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
futex(0x7f11dc007c28, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f11dc007c54, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1,
{1341568603, 555871000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
futex(0x7f11dc007c28, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f11dc007c54, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1,
{1341568603, 555966000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
futex(0x7f11dc007c28, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f11dc007c54, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1,
{1341568603, 556060000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
futex(0x7f11dc007c28, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7f11dc007c54, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1,
{1341568603, 556153000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
per second.
Anybody knows how to debug this further and fix?
Corin
