Cache performance of operating system and multiprogramming workloads
ACM Transactions on Computer Systems (TOCS)
The impact of operating system structure on memory system performance
SOSP '93 Proceedings of the fourteenth ACM symposium on Operating systems principles
An analysis of operating system behavior on a simultaneous multithreaded architecture
ASPLOS IX Proceedings of the ninth international conference on Architectural support for programming languages and operating systems
Computation spreading: employing hardware migration to specialize CMP cores on-the-fly
Proceedings of the 12th international conference on Architectural support for programming languages and operating systems
The shared-thread multiprocessor
Proceedings of the 22nd annual international conference on Supercomputing
Fast switching of threads between cores
ACM SIGOPS Operating Systems Review
Fast switching of threads between cores
ACM SIGOPS Operating Systems Review
FlexSC: flexible system call scheduling with exception-less system calls
OSDI'10 Proceedings of the 9th USENIX conference on Operating systems design and implementation
Mind the gap: reconnecting architecture and OS research
HotOS'13 Proceedings of the 13th USENIX conference on Hot topics in operating systems
Exception-less system calls for event-driven servers
USENIXATC'11 Proceedings of the 2011 USENIX conference on USENIX annual technical conference
Improving server performance on multi-cores via selective off-loading of OS functionality
ISCA'10 Proceedings of the 2010 international conference on Computer Architecture
A file I/O system for many-core based clusters
Proceedings of the 2nd International Workshop on Runtime and Operating Systems for Supercomputers
Exploiting semantics of virtual memory to improve the efficiency of the on-chip memory system
Euro-Par'12 Proceedings of the 18th international conference on Parallel Processing
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Large-scale multi-core chips open up the possibility of implementing heterogeneous cores on a single chip, where some cores can be customized to execute common code patterns. The operating system is an example of a common code pattern that is constantly executing on every processor. It is therefore a prime candidate for core customization. Recent work has begun to explore this possibility, where some fraction of system calls and other OS functionality is off-loaded to a separate special-purpose core. Studies have shown that this can improve overall system performance and power consumption. However, our explorations in this arena reveal that the primary benefits of off-loading can be captured with alternative mechanisms that eliminate the negative effects of off-loading. This position paper articulates this alternative mechanism with initial results that demonstrate promise.