[asterisk-bugs] [JIRA] (DAHLIN-269) dahdi timing issues with recent kernels and intel_idle driver

[Keith Morgan (JIRA)]

     [ https://issues.asterisk.org/jira/browse/DAHLIN-269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Keith Morgan closed DAHLIN-269.
-------------------------------

    Resolution: Fixed

> dahdi timing issues with recent kernels and intel_idle driver
> -------------------------------------------------------------
>
>                 Key: DAHLIN-269
>                 URL: https://issues.asterisk.org/jira/browse/DAHLIN-269
>             Project: DAHDI-Linux
>          Issue Type: Bug
>      Security Level: None
>          Components: wcte11xp
>    Affects Versions: 2.5.0.2
>            Reporter: frawd
>            Assignee: Russ Meyerriecks
>            Severity: Minor
>
> When the intel_idle driver is active (default in recent linux kernels like 3.0), i see lots of timing issues rendering PCI and PCI-E PRI cards useless (HDLC Abort, etc.).
> dahdi_test drops to 90% or less.
> Workaround is disabling intel_idle by booting with intel_idle.max_cstate=0 (which makes use of acpi_idle instead).
> This affects all digium cards i could test so far on HP servers with modern Intel CPU (core iX CPUs and recent Xeon) on recent kernels. Does not affect older Intel CPUs (core duo).
> For info: Sangoma hardware works perfectly in the same server.



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