Messages in this thread | | | Subject | More latency regressions with 2.6.11-rc4-RT-V0.7.39-02 | From | Lee Revell <> | Date | Wed, 23 Feb 2005 13:07:41 -0500 |
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Ingo,
Did something change recently in the VM that made copy_pte_range and clear_page_range a lot more expensive? I noticed a reference in the "Page Table Iterators" thread to excessive overhead introduced by aggressive page freeing. That sure looks like what is going on in trace2. trace1 and trace3 look like big fork latencies associated with copy_pte_range.
This is all with PREEMPT_DESKTOP.
Lee
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