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Sunday, January 20, 2013. Spinlocks as the name suggests, is a kind of lock where you spin until you own the lock. Traditional mutexes, semaphore implementations put you into a sleeping wait queue in the kernel until you are granted the lock. If your critical section is small and you don't have any sleeping paths in the code, you can use spinlocks which are faster as they entail no context switches in the lock path. Traditionally, spinlock implementations work by decrementing the lock value atomically.

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Sunday, January 20, 2013. Spinlocks as the name suggests, is a kind of lock where you spin until you own the lock. Traditional mutexes, semaphore implementations put you into a sleeping wait queue in the kernel until you are granted the lock. If your critical section is small and you don't have any sleeping paths in the code, you can use spinlocks which are faster as they entail no context switches in the lock path. Traditionally, spinlock implementations work by decrementing the lock value atomically.

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Techie blog streams | linuxkernelpanic.blogspot.com Reviews

https://linuxkernelpanic.blogspot.com

Sunday, January 20, 2013. Spinlocks as the name suggests, is a kind of lock where you spin until you own the lock. Traditional mutexes, semaphore implementations put you into a sleeping wait queue in the kernel until you are granted the lock. If your critical section is small and you don't have any sleeping paths in the code, you can use spinlocks which are faster as they entail no context switches in the lock path. Traditionally, spinlock implementations work by decrementing the lock value atomically.

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linuxkernelpanic.blogspot.com

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Techie blog streams: Using static branch prediction with gcc

http://linuxkernelpanic.blogspot.com/2010/06/using-static-branch-prediction-with-gcc.html

Tuesday, June 22, 2010. Using static branch prediction with gcc. The most common way to write such stuffs is to hide them beneath the #ifdef macros so they are compiled out. But then you have to recompile your code to enable the special helper code. I shoved the special code through a branch on an environment variable. So if the env. variable was defined, the code would get executed. So you would obviously think this:. Main heap allocator fastpath */. In order to overcome any potential performance bottle...

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Techie blog streams: June 2010

http://linuxkernelpanic.blogspot.com/2010_06_01_archive.html

Tuesday, June 22, 2010. Using static branch prediction with gcc. The most common way to write such stuffs is to hide them beneath the #ifdef macros so they are compiled out. But then you have to recompile your code to enable the special helper code. I shoved the special code through a branch on an environment variable. So if the env. variable was defined, the code would get executed. So you would obviously think this:. Main heap allocator fastpath */. In order to overcome any potential performance bottle...

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Techie blog streams: Scribblings of a demented mind

http://linuxkernelpanic.blogspot.com/p/scribblings-of-demented-mind.html

Scribblings of a demented mind. Subscribe to: Posts (Atom). Scribblings of a demented mind. View my complete profile.

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Techie blog streams: January 2013

http://linuxkernelpanic.blogspot.com/2013_01_01_archive.html

Sunday, January 20, 2013. Spinlocks as the name suggests, is a kind of lock where you spin until you own the lock. Traditional mutexes, semaphore implementations put you into a sleeping wait queue in the kernel until you are granted the lock. If your critical section is small and you don't have any sleeping paths in the code, you can use spinlocks which are faster as they entail no context switches in the lock path. Traditionally, spinlock implementations work by decrementing the lock value atomically.

5

Techie blog streams: May 2012

http://linuxkernelpanic.blogspot.com/2012_05_01_archive.html

Friday, May 25, 2012. Recently one of our machines got hacked . cracked. I was with a dentist settling my dues when my colleague in Boston called me and mentioned that he had spotted a cracker in our network. Before re-installing a newer distro, I ran a readlink /proc/`pidof scanssh`/cwd to get the current working directory of the scan-ssh processes and quickly backed up all the helper programs used by the cracker/bot. Virtualbox supports port-forwarding from hosts for NAT'ed guests as documented in thei...

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linuxkernelpanic.blogspot.com

Techie blog streams

Sunday, January 20, 2013. Spinlocks as the name suggests, is a kind of lock where you spin until you own the lock. Traditional mutexes, semaphore implementations put you into a sleeping wait queue in the kernel until you are granted the lock. If your critical section is small and you don't have any sleeping paths in the code, you can use spinlocks which are faster as they entail no context switches in the lock path. Traditionally, spinlock implementations work by decrementing the lock value atomically.

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