Messages in this thread |  | | | Date | Mon, 28 Jun 2004 09:27:15 +0200 | | From | Frederic Krueger <> | | Subject | io apic + tsc = slowdown (bugreport + possible fix) |
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Hi,
just wanted to point out the patch I imported from an older version of the 2.6.x kernel (not done by me at all ;-)). It's basically causing the system to a near zero slowdown after one hour of uptime. And the reason for it must be the io_apic irq0 handling with TSC enabled systems (seems to show up on ibm pre-built boxes more often than on others though). Funnily pressing any keys _all the time_ works around for this for the time a key is pressed ;)
The bug report entry contains a patch for arch/i386/kernel/io_apic.c which fixed it for me. Maybe this should make it into the cvs tree since it's a _really_ annoying bug, basically rendering the computer unusable if present.
The link to the bug report with more detailed information can be found here: http://bugme.osdl.org/show_bug.cgi?id=2964
Thanks for checking and considering :-)
Bye, Frederic
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