This sort of obscure problem is not really uncommon in microprocessors, but CPU makers are often able to fix them on the fly with little impact to the end user. AMD has provided a technical description of the problem as part of its documentation for a unsupported patch for the Linux kernel that alleviates the problem with only a minor performance hit.. P S Make sure you start cpuid before using tlb patch and unzip tlb in Phenom TLB patch benchmarked A look at how AMD's BIOS workaround impacts Phenom performance by Scott Wasson — 12:59 AM on December 6, 2007 We have been following the story of a chip-level problem in AMD's quad-core Opteron and Phenom processors all week.. This particular erratum is especially unfortunate because the fix for it involves sacrificing a substantial amount of performance.. Those are the basic outlines of the problem, but we should address something else before we move on.. var q = 'amd%209500%20tlb%20patch'; EVERYONE WHO GOT AMD PHENOM 9500 AND AMD PHENOM 9600 NEED TO READ THIS. patchpatch, patches, patch meaning, patchwork, patch notes, patch panel, patch cord, patchouli, patch tuesday, patch and go, patchogue, patchogue restaurants, patchogue medford school district, patchwork jeans, patch adams, patchogue urgent care Technically, AMD refers to the problem as errata number 298, but the problem has become more widely known as the TLB erratum.. The erratum also affects all speed grades of Phenom processors, which are still shipping to PC makers and resellers. Macos High Sierra Dmg Download Without App Store
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One thing we haven't known is exactly how that performance penalty would look—until today.. Err-what-um? I don't wish to re-hash too much of what we've already covered this week, but we should recap briefly the nature of the erratum.. AMD says the problem is very rare, and we believe them CPU makers do a tremendous amount of qualification testing before releasing a product, precisely because they want to avoid show-stopper problems.. We don't really have any good way of quantifying that at present, but we can offer a few nuggets of wisdom.. In truth, the erratum can cause instability with desktop-style usage patterns, as well, and systems with Phenom 9500 and 9600 processors will have to be patched and suffer the accompanying performance penalty.. We can now offer you some preliminary benchmarks that demonstrate the impact of the BIOS-based workaround for the problem.. AMD admitted the presence of the erratum prior to the Phenom's public introduction, but the firm's initial statements gave the impression that the erratum affected only virtualization, which is a server-class application and an uncommon use for a desktop CPU.. This bug—CPU makers prefer to call them errata—can cause system hangs in specific, rare circumstances. 773a7aa168
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