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  1. #1
    Join Date
    2016-Feb
    Posts
    19

    perf: interrupt took too long error

    Hello,

    I got these messages on the screen after I not use the system (screensaver off), and the system totally freeze.
    New install. How could I solve the problem? Have you any idea?

    Thanks,

    Desktop manager xfce.
    01:00.0 VGA compatible controller: NVIDIA Corporation G86M [GeForce 8400M GS] (rev a1)
    VGA driver: nvidia-legacy-344xx-driver

    OS: Kali 2016 Rolling

    root@kali:/var/log# uname -a
    Linux kali 4.6.0-kali1-686-pae #1 SMP Debian 4.6.3-1kali1 (2016-07-12) i686 GNU/Linux

    root@kali:/var/log# lsb_release -a
    No LSB modules are available.
    Distributor ID: Kali
    Description: Kali GNU/Linux Rolling
    Release: kali-rolling
    Codename: kali-rolling

    root@kali:/var/log# less syslog | grep perf
    Jul 21 01:52:21 kali kernel: [ 343.707587] perf: interrupt took too long (2508 > 2500), lowering kernel.perf_event_max_sample_rate to 79500
    Jul 21 01:54:31 kali kernel: [ 473.635966] perf: interrupt took too long (3154 > 3135), lowering kernel.perf_event_max_sample_rate to 63250
    Jul 21 01:58:42 kali kernel: [ 724.822008] perf: interrupt took too long (3947 > 3942), lowering kernel.perf_event_max_sample_rate to 50500
    Jul 21 02:04:00 kali kernel: [ 1043.109066] perf: interrupt took too long (4940 > 4933), lowering kernel.perf_event_max_sample_rate to 40250
    Jul 21 02:31:53 kali kernel: [ 2715.980311] perf: interrupt took too long (6177 > 6175), lowering kernel.perf_event_max_sample_rate to 32250
    Jul 21 03:27:58 kali kernel: [ 341.105985] perf: interrupt took too long (2517 > 2500), lowering kernel.perf_event_max_sample_rate to 79250
    Jul 21 03:30:26 kali kernel: [ 488.475708] perf: interrupt took too long (3170 > 3146), lowering kernel.perf_event_max_sample_rate to 63000
    Jul 21 03:37:37 kali kernel: [ 919.610319] perf: interrupt took too long (3976 > 3962), lowering kernel.perf_event_max_sample_rate to 50250
    Jul 21 03:45:29 kali kernel: [ 1392.049748] perf: interrupt took too long (4977 > 4970), lowering kernel.perf_event_max_sample_rate to 40000
    Jul 21 04:10:06 kali kernel: [ 2868.547790] perf: interrupt took too long (6247 > 6221), lowering kernel.perf_event_max_sample_rate to 32000
    Jul 21 08:00:10 kali kernel: [ 420.175679] perf: interrupt took too long (2562 > 2500), lowering kernel.perf_event_max_sample_rate to 78000
    Jul 21 08:02:24 kali kernel: [ 554.173740] perf: interrupt took too long (3215 > 3202), lowering kernel.perf_event_max_sample_rate to 62000
    Jul 21 08:05:50 kali kernel: [ 760.634426] perf: interrupt took too long (4026 > 4018), lowering kernel.perf_event_max_sample_rate to 49500
    Jul 21 08:12:23 kali kernel: [ 1153.295642] perf: interrupt took too long (5081 > 5032), lowering kernel.perf_event_max_sample_rate to 39250
    Jul 21 08:34:57 kali kernel: [ 853.294057] perf: interrupt took too long (2510 > 2500), lowering kernel.perf_event_max_sample_rate to 79500
    Jul 21 08:36:22 kali kernel: [ 939.021043] perf: interrupt took too long (3139 > 3137), lowering kernel.perf_event_max_sample_rate to 63500

  2. #2
    Join Date
    2016-Feb
    Posts
    19
    UPDATE:
    After uninstall nvidia-legacy-340xx-driver, no error logs. So now I use nouveau, not good but at this time I don't know better solution.

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