英语翻译PCI-Express:The new I/O express lane Lovest Watson,Emulex Corp.MARCH 23,2005 （COMPUTERWORLD）- It''s amazing to consider that,with all the upheaval and change that has occurred in the IT world over the past decade,the primary I/O bus a

英语翻译PCI-Express:The new I/O express lane Lovest Watson,Emulex Corp.MARCH 23,2005 （COMPUTERWORLD）- It''s amazing to consider that,with all the upheaval and change that has occurred in the IT world over the past decade,the primary I/O bus a
英语翻译
PCI-Express:The new I/O express lane
Lovest Watson,Emulex Corp.
MARCH 23,2005 （COMPUTERWORLD）- It''s amazing to consider that,with all the upheaval and change that has occurred in the IT world over the past decade,the primary I/O bus architecture for PCs and servers hasn''t changed since the early 1990s.Peripheral Component Interconnect (PCI) has been the de facto I/O bus architecture for the better part of 13 years.
Before you start thinking less of some major household names in the IT industry,it should be said first that PCI''s longevity is a testament to its effectiveness.It should also be said that earlier attempts to introduce a new and upgraded I/O architecture failed in part because they would have required vendors to rewrite everything from drivers to utilities and management software.
On the horizon is the arrival of PCI Express,a new bus architecture that provides so much performance and scalability that we expect it will be around for a similarly extended period of time.This time around,the designers began their development with backward compatibility as a requirement.By supporting the PCI configuration-space programming model,PCI Express designers removed the dependency on new operating system support.This allows many existing drivers and applications to run on new PCI Express hardware.
Do we really need a new I/O bus architecture now?
PCI did an admirable job providing rock-solid data transport to feed everything from processors to network adapters,to subsystems and graphics cards.But as the speed and capabilities of those surrounding components drastically improved,PCI''s maximum 133-MHz speed and its parallel architecture gradually became a bottleneck to system performance.

英语翻译PCI-Express:The new I/O express lane Lovest Watson,Emulex Corp.MARCH 23,2005 （COMPUTERWORLD）- It''s amazing to consider that,with all the upheaval and change that has occurred in the IT world over the past decade,the primary I/O bus a
PCI - Express的：新的I / O Express通道
lovest沃森,Emulex的公司
2005年3月23日（计算机） -i t'惊人的考虑,与所有的动荡和发生的变化在资讯科技世界在过去的十年中,小学I / O总线架构的P C和服务器h asn''t改变了自20世纪90年代初.外围组件互连（ PCI ）一直是事实上的I / O总线架构,以便更有效地的一部分,13年.
在您开始前的思考,少一些重大家喻户晓的人物在IT产业,应该说,第一,pci'的长寿是证明了其有效性.还应当说,早些时候试图推行一项新的和升级I / O体系结构失败,部分原因是他们将要求供应商重新改写一切从司机公用事业及管理软件.
在地平线上是到来的PCI Express ,一个新的总线架构,提供了这么多性能和可扩展性,我们预期它将会被围住一个同样延长的时间内.这个关键时刻,设计师开始他们的发展与向后兼容作为一个要求.支持的PCI的配置空间的编程模型,PCI Express的设计师取消了依赖于新的操作系统的支持.这使得许多现有的驱动程序和应用程序上运行的全新的PCI Express架构的硬件产品.
我们真的需要一个新的I / O总线架构,现在呢?
的PCI没有令人羡慕的工作提供了坚如磐石的数据传输到饲料一切从处理器的网络适配器,子系统和图形卡.但由于速度和能力,这些周边元件大幅提高,pci'的最高133 MHz的速度和它的并行结构逐渐成为一个瓶颈,以系统性能