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titleQMMT: Exploiting Fine-Grained Parallelism in Dynamic Memory Management
Abstract—Dynamic memory management is one of the most
expensive but ubiquitous operations in many C/C++ applications.
Additional features such as security checks, while desirable,
further worsen memory management overheads. With
advent of multicore architecture, it is important to investigate
how dynamic memory management overheads for sequential
applications can be reduced.
In this paper, we propose a new approach for accelerating
dynamic memory management on multicore architecture, by
offloading dynamic management functions to a separate thread
that we refer to as memory management thread (MMT).
We show that an efficient MMT design can give significant
performance improvement by extracting parallelism while being
agnostic to the underlying memory management library
algorithms and data structures. We also show how parallelism
provided by MMT can be beneficial for high overhead memory
management tasks, for example, security checks related to
memory management.
We evaluate MMT on heap allocation-intensive benchmarks
running on an Intel core 2 quad platform for two widelyused
memory allocators: Doug Lea’s and PHKmalloc allocators.
On average, MMT achieves a speedup ratio of 1.19×
for both allocators, while both the application and memory
management libraries are unmodified and are oblivious to the
parallelization scheme. For PHKmalloc with security checks
turned on, MMT reduces the security check overheads from
21% to only 1% on average.
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q就是传说中的内存振荡和内存片。。?
上面的内存管理，是现在普遍采用的Ҏ中的其中一U，q新鲜事?如果你觉得大家不用new delete是无聊。那你可以写脓子来喗?但是如果你是在自己没有完全理解的情况下说q样的话Q那我会很有意见?有些东西Q不能靠自己猜，特别是C/C++?
我不知道你是不是惌q个{案。或许，你指的是别样Q！Q?img src ="http://www.shnenglu.com/HoneyCat/aggbug/115055.html" width = "1" height = "1" />
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