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The Huge Disaster Within The Linux 2.6.35 Kernel

May 28, 2010, 16:32 (1 Talkback[s])
(Other stories by Michael Larabel)

"For the past six months we have been monitoring the performance of the very latest Linux kernel code on a daily basis across multiple systems. We have spotted a few regressions -- both positive and negative -- on occasion using our automated daily testing of the Linux kernel, but nothing like what we have encountered the past few days: the Linux 2.6.35 kernel performance has fallen hard. In fact, the performance has fallen very hard in a number of tests and right now, we would consider it a disaster. While the 2.6.35 code has not even seen its first release candidate yet, there are some massive performance drops in a variety of different tests that have yet to be corrected and nothing like we have encountered with previous kernel release cycles especially for a regression that has lived now for about one week. ,p>"To cut to the chase, between the 22nd and 24th of May there looks to be at least one commit (though perhaps multiple based upon the different data) within the Linus Torvalds 2.6 Git tree that are negatively affecting many different server/desktop benchmarks. We waited nearly a week to see if these regressions would be organically caught and addressed, but they have not been at least of the Linux 2.6 Git state as of 2010-05-26."

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