Over the past months server vendors have been announcing benchmark results for systems incorporating Intel’s high-end x86 CPU, the E7, with HP trumping all existing benchmarks with their recently announced numbers (although, as noted in x86 Servers Hit The High Notes, the results are clustered within a few percent each other). HP recently announced new performance numbers for their ProLiant DL980, their high-end 8-socket x86 server using the newest Intel E7 processors. With up to 10 cores, these new processors can bring up to 80 cores to bear on large problems such as database, ERP and other enterprise applications.
The performance results on the SAP SD 2-Tier benchmark, for example, at 25160 SD users, show a performance improvement of 35% over the previous high-water mark of 18635. The results seem to scale almost exactly with the product of core count x clock speed, indicating that both the system hardware and the supporting OS, in this case Windows Server 2008, are not at their scalability limits. This gives us confidence that subsequent spins of the CPU will in turn yield further performance increases before hitting system of OS limitations. Results from other benchmarks show similar patterns as well.
Key takeaways for I&O professionals include:
Expect to see at least 25% to 35% throughput improvements in many workloads with systems based on the latest the high-performance PCUs from Intel. In situations where data center space and cooling resources are constrained this can be a significant boost for a same-footprint upgrade of a high-end system.
For Unix to Linux migrations, target platform scalability continues become less of an issue.
Most of the hype in advance of today’s Apple media event is rightly about a new iPad. Sarah Rotman Epps will post on her blog about the new iPad for consumer product strategists after the announcement. I’m focused on the published reports that Apple’s Mobile Me service will be upgraded. I cited Mobile Me as an example of emerging personal cloud services in a July 2009 report, and I’m working on a follow-on report now. Mobile Me is Apple’s horse in a contest with Facebook, Google, Microsoft, and others, to shift personal computing from being device-centric to user-centric, so that you and I don’t need to think about which gadget has the apps or data that we want. The vision of personal cloud is that a combination of local apps, cached data, and cloud-based services will put the right information in the right device at the right time, whether on personal or work devices. The strengths of Mobile Me today are:
Synced contacts, calendar, Safari bookmarks, and email account settings, as well as IMAP-based Mobile Me email accounts, for Web, Mac, Windows, and iOS devices.
Synced Mac preferences, including app and system preferences.
Mobile Me Gallery for easy uploading and sharing of photos and videos.
I’ve recently had the opportunity to talk with a small sample of SLES 11 and RH 6 Linux users, all developing their own applications. All were long-time Linux users, and two of them, one in travel services and one in financial services, had applications that can be described as both large and mission-critical.
The overall message is encouraging for Linux advocates, both the calm rational type as well as those who approach it with near-religious fervor. The latest releases from SUSE and Red Hat, both based on the 2.6.32 Linux kernel, show significant improvements in scalability and modest improvements in iso-configuration performance. One user reported that an application that previously had maxed out at 24 cores with SLES 10 was now nearing production certification with 48 cores under SLES 11. Performance scalability was reported as “not linear, but worth doing the upgrade.”
Overall memory scalability under Linux is still a question mark, since the widely available x86 platforms do not exceed 3 TB of memory, but initial reports from a user familiar with HP’s DL 980 verify that the new Linux Kernel can reliably manage at least 2TB of RAM under heavy load.
File system options continue to expand as well. The older Linux FS standard, ETX4, which can scale to “only” 16 TB, has been joined by additional options such as XFS (contributed by SGI), which has been implemented in several installations with file systems in excess of 100 TB, relieving a limitation that may have been more psychological than practical for most users.
The reports show that Windows 7 penetrated the consciousness of the market by the end of 2009, with a strong majority of US consumers aware of the product. We also found that consumers who adopted Windows 7 in Q4 were generally very satisfied with their Windows 7 PCs.
Perhaps the most interesting finding of the reports involves upgrade behaviors. Historically, most consumers have not upgraded their PCs with new OSes -- though Mac users and some technophile consumers have been an exception on this count. Instead, the majority of consumers have acquired new OSes when they purchase their new PC. These are known as "replacement cycle upgrades."
With Windows 7, however, upgrade behavior was much stronger. Why? In short, Windows 7 is a thinner client program than was Windows Vista, meaning that it works well on older hardware configurations. In the past, OSes were designed with Moore's Law as an underlying assumption -- that is, that newer PC hardware would be significantly faster and more powerful than the previous generation's hardware. Windows 7, however, is a less burdensome OS than Windows Vista. The rise of Netbooks, the physical assets of multi-PC households, and an attachment by many consumers to their Windows XP machines all contributed to the need for a sleeker, thinner Windows OS, which Windows 7 delivered.
Among early adopters of Windows 7, in Q4, for the first time upgrading behavior matched replacement cycle purchasing, as this Figure shows: