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scripts: Add dsq latency script #466

Merged
merged 1 commit into from
Aug 2, 2024
Merged

scripts: Add dsq latency script #466

merged 1 commit into from
Aug 2, 2024

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hodgesds
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@hodgesds hodgesds commented Aug 2, 2024

This change adds a bpftrace script to monitor runq latency as well as dsq latency.

scheduler: layered
@avg_lat: 396

@usec_hist: 
[0]                16807 |@@@@@@@@                                            |
[1]                69339 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@                   |
[2, 4)            106525 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@|
[4, 8)             82849 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@            |
[8, 16)            76488 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@               |
[16, 32)           63287 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@                      |
[32, 64)           49775 |@@@@@@@@@@@@@@@@@@@@@@@@                            |
[64, 128)          14701 |@@@@@@@                                             |
[128, 256)          2163 |@                                                   |
[256, 512)           968 |                                                    |
[512, 1K)            827 |                                                    |
[1K, 2K)             786 |                                                    |
[2K, 4K)             812 |                                                    |
[4K, 8K)            1044 |                                                    |
[8K, 16K)           1198 |                                                    |
[16K, 32K)          1037 |                                                    |
[32K, 64K)           717 |                                                    |
[64K, 128K)          565 |                                                    |
[128K, 256K)         257 |                                                    |
[256K, 512K)          20 |                                                    |

@dsq_avg_lat[0]: 396
@dsq_avg_lat[7]: 1651
@dsq_avg_lat[6]: 1925
@dsq_avg_lat[3]: 3557
image

@hodgesds
scripts: Add dsq latency script
b6054fb 
This change adds a bpftrace script to monitor runq latency as well as
dsq latency.

Signed-off-by: Daniel Hodges <[email protected]>
@hodgesds hodgesds merged commit d0355c4 into sched-ext:main Aug 2, 2024
1 check passed
@hodgesds hodgesds deleted the dsq-lat branch August 2, 2024 20:45
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@htejun htejun htejun approved these changes

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@hodgesds @htejun