| Autor: |
PETER, SIMON, JIALIN LI, IRENE ZHANG, PORTS, DAN R. K., WOOS, DOUG, KRISHNAMURTHY, ARVIND, ANDERSON, THOMAS, ROSCOE, TIMOTHY |
| Předmět: |
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| Zdroj: |
ACM Transactions on Computer Systems; Nov2015, Vol. 33 Issue 4, p11:1-11:30, 30p |
| Abstrakt: |
Recent device hardware trends enable a new approach to the design of network server operating systems. In a traditional operating system, the kernel mediates access to device hardware by server applications to enforce process isolation as well as network and disk security. We have designed and implemented a new operating system, Arrakis, that splits the traditional role of the kernel in two. Applications have direct access to virtualized I/O devices, allowing most I/O operations to skip the kernel entirely, while the kernel is reengineered to provide network and disk protection without kernel mediation of every operation. We describe the hardware and software changes needed to take advantage of this new abstraction, and we illustrate its power by showing improvements of 2 to 5× in latency and 9× throughput for a popular persistent NoSQL store relative to a well-tuned Linux implementation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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