Linux kernel patch reveals TLB bug's workings
December 5, 2007
AMD was prepping a kernel patch for the 64-bit flavor of Red Hat Enterprise Linux, Upgrade 4.
Unlike AMD's BIOS fix and microcode update, which we've heard induces a 10-20% performance hit, the Linux patch was said to reduce performance by less than 1%!!!!!
skutocne to zaklincoval sef divizie CPU u AMD, ked povedal, ze spomalenie BIOS patchom zavisi na OS..
On the workaround on the Opterons, the Tech Report source talks about a 10 percent to 20 percent performance hit. Is that true, is that something you can address?
Yes, 5 to 20 percent is something we did see on our fix, which is unacceptable for the server space.
On some of the HPC clusters, the workaround does not affect performance?
No, it always affects performance. And it depends on the operating system, too
