Efficient software-based fault isolation
SOSP '93 Proceedings of the fourteenth ACM symposium on Operating systems principles
Extensibility safety and performance in the SPIN operating system
SOSP '95 Proceedings of the fifteenth ACM symposium on Operating systems principles
Semantically-Smart Disk Systems
FAST '03 Proceedings of the 2nd USENIX Conference on File and Storage Technologies
PenguinoMeter: a new file-I/O benchmark for Linux®
ALS '01 Proceedings of the 5th annual Linux Showcase & Conference - Volume 5
Extending file systems using stackable templates
ATEC '99 Proceedings of the annual conference on USENIX Annual Technical Conference
I/O-Conscious Volume Rendering
EGVISSYM'01 Proceedings of the 3rd Joint Eurographics - IEEE TCVG conference on Visualization
Extending ACID semantics to the file system
ACM Transactions on Storage (TOS)
The design and implementation of microdrivers
Proceedings of the 13th international conference on Architectural support for programming languages and operating systems
Microdrivers: a new architecture for device drivers
HOTOS'07 Proceedings of the 11th USENIX workshop on Hot topics in operating systems
The case for VOS: the vector operating system
HotOS'13 Proceedings of the 13th USENIX conference on Hot topics in operating systems
Using vector interfaces to deliver millions of IOPS from a networked key-value storage server
Proceedings of the Third ACM Symposium on Cloud Computing
| Hi-index | 0.00 |
User applications that move a lot of data across the user-kernel boundary suffer from a serious performance penalty. We provide a framework, Compound System Calls (Cosy), to enhance the performance of such user-level applications. Cosy provides a user-friendly mechanism to execute the data-intensive code segment of the application in the kernel. This is achieved by aggregating the data-intensive system calls and the intermediate code into a compound. This compound is executed in the kernel, avoiding redundant data copies. A Cosy version of GCC makes the formation of a Cosy compound simple. Cosy-GCC automatically converts user-defined code segments into compounds. To ensure the security of the kernel, we use a combination of static and dynamic checks. We limit the execution time of the application in the kernel by usinga modified preemptible kernel. Kernel data integrity is assured by performing necessary dynamic checks. Static checks are enforced by Cosy-GCC. To study the performance benefits of our Cosy prototype, we instrumented applications such as grep and ls. These application showed an improvement of 20-80%. Our current work focuses on faster and secure execution of entire programs in the kernel without source code modification.