Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Dan Tsafrir"'
Publikováno v:
Proceedings of the 15th ACM International Conference on Systems and Storage.
Publikováno v:
Proceedings of the 27th ACM International Conference on Architectural Support for Programming Languages and Operating Systems.
Publikováno v:
HotStorage
Peripheral devices like SSDs are growing more complex, to the point they are effectively small computers themselves. Our position is that this trend creates a new kind of attack vector, where untrusted software could use peripherals strictly as inten
Publikováno v:
SYSTOR
The meltdown vulnerability allows users to read kernel memory by exploiting a hardware flaw in speculative execution. Processor vendors recommend "page table isolation" (PTI) as a software fix, but PTI can significantly degrade the performance of sys
Autor:
Gil Kupfer, Adam Morrison, Dan Tsafrir, Markuze Alex, Boris Pismeny, Nadav Amit, Shay Vargaftik
Publikováno v:
EuroSys
Direct memory access (DMA) renders a system vulnerable to DMA attacks, in which I/O devices access memory regions not intended for their use. Hardware input-output memory management units (IOMMU) can be used to provide protection. However, an IOMMU c
Publikováno v:
ASPLOS
CPUs routinely offload to NICs network-related processing tasks like packet segmentation and checksum. NIC offloads are advantageous because they free valuable CPU cycles. But their applicability is typically limited to layer≤4 protocols (TCP and l
Publikováno v:
MICRO
Computer architects frequently use cycle-accurate simulations, which incur heavy overheads. Recently, virtual memory studies increasingly employ a lighter-weight methodology that utilizes partial simulations—of only the memory subsystem— whose ou
Publikováno v:
EuroSys
Distributed storage systems often triplicate data to reduce the risk of permanent data loss, thereby tolerating at least two simultaneous disk failures at the price of 2/3 of the capacity. To reduce this price, some systems utilize erasure coding. Bu
Autor:
Austin Bolen, Igor Smolyar, Alex Markuze, Dan Tsafrir, Gerd Zellweger, Haggai Eran, Boris Pismenny, Liran Liss, Adam Morrison
Publikováno v:
ASPLOS
In a multi-CPU server, memory modules are local to the CPU to which they are connected, forming a nonuniform memory access (NUMA) architecture. Because non-local accesses are slower than local accesses, the NUMA architecture might degrade application
Autor:
Shachar Raindel, Nadav Amit, Guy Shapiro, Liran Liss, Muli Ben-Yehuda, Sagi Grimberg, Haggai Eran, Dan Tsafrir, Ilya Lesokhin
Publikováno v:
ASPLOS
Direct network I/O allows network controllers (NICs) to expose multiple instances of themselves, to be used by untrusted software without a trusted intermediary. Direct I/O thus frees researchers from legacy software, fueling studies that innovate in