Hello The message "No irq handler for vector (irq -1)" appears with no apparent period/correlation. After googling, irqbalance seems to be suspect the archive attached provide : irqbalance.log proc_interrupts smp_affinity.txt irqbalance version : 1.0.3-3 No lstopo on my distro (debian wheezy) I?ve redirected the message No irq handler for vector (irq -1) from rsyslog to irqbalance.log. So you should be able to locate in irqbalance.log when the message occurred. Thank you for your support Cedric -------------- next part -------------- A non-text attachment was scrubbed... Name: irqbalance-report.tar.gz Type: application/x-gzip Size: 22438 bytes Desc: not available URL: <http://lists.infradead.org/pipermail/irqbalance/attachments/20150517/7b8a8c8d/attachment-0001.bin>