parameter panic – the number of seconds the kernel waits before rebooting on a panic

GNU/Linux PARAMETER root>cat /proc/sys/kernel/panic 0 root>echo 60 > /proc/sys/kernel/panic root>cat /proc/sys/kernel/panic 60 root> PARAMETER EXPLANATION http://en.wikipedia.org/wiki/Kernel_panic PARAMETER FUNCTION panic: The value in this file represents the number of seconds the kernel waits before rebooting on a panic. When you use the software watchdog, the recommended setting is 60. PARAMETER CODE CONNECTION http://lxr.linux.no/linux+v3.12.5/kernel/panic.c

Linux KERNEL TESTING signaltest

ABOUT Signal(IPC) Signals are a limited form of inter-process communication (IPC), typically used in Unix, Unix-like, and other POSIX-compliant operating systems. A signal is an asynchronous notification sent to a process or to a specific thread within the same process in order to notify it of an event that occurred. Signals originated in 1970s Bell… Continue reading Linux KERNEL TESTING signaltest

Linux KERNEL TESTING cyclictest DETAIL

ABOUT SOFTWARE TESTING Software testing is an investigation conducted to provide stakeholders with information about the quality of the software product or service under test.[1] Software testing can also provide an objective, independent view of the software to allow the business to appreciate and understand the risks of software implementation. Test techniques include the process… Continue reading Linux KERNEL TESTING cyclictest DETAIL

Advanced Programmable Interrupt Controller

Connected From This APIC In computing, an Advanced Programmable Interrupt Controller (APIC) is a more complex Programmable Interrupt Controller (PIC) than Intel's original types such as the 8259A. APIC devices permit more complex priority models, and Advanced IRQ (Interrupt Request) management. In computing, a programmable interrupt controller (PIC) is a device that is used to… Continue reading Advanced Programmable Interrupt Controller

Kernel Panic….

Call Trace: {panic+483} {_spin_unlock_ irq+12} {__down_read+60} {_spin_lock_irqsave+ 9} {__up_read+25} {blocking_notifier_cal l_chain+70} {do_exit+141} {kernel_math_error+0} <ffffffff80270dfc}{do_invalid_op+173} {:aacraid:aac_intr _normal+463} <fffffff80269ece}{spin_lock_irqsave+9} {printk+82} {error_exit+0} {vgacon_cursor+0} {:aacraid:aac_intr_normal+473} {:aacr aid:aac_intr_normal+473} {:aacraid:aac_rx_intr+55} {handle_IRQ _event+41} {__do_IRQ+154} {do_IRQ+60} {ret_from_intr+0} (3) astrax:/home/pgperez> (3) astrax:/home/pgperez> cat error {:aacraid:aac_rx_intr+55} {handle_IRQ_event+41} {__do_IRQ+154} {do_IRQ+60} {ret_from_intr+0} link : https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=205778