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igt- >> dev@lists.freedesktop.org >> Cc: Brost, Matthew ; Nilawar, Badal >> ; Tauro, Riana ; Poosa, >> Karthik >> Subject: Re: [PATCH i-g-t 1/2] Revert "tests/intel/xe_pm_residency: Add an >> assertion on MI_STORE execution time" >> >> >> >> On 08-10-2024 07:31, Gupta, Anshuman wrote: >>> >>> >>>> -----Original Message----- >>>> From: Ghimiray, Himal Prasad >>>> Sent: Monday, October 7, 2024 10:54 PM >>>> To: igt-dev@lists.freedesktop.org >>>> Cc: Ghimiray, Himal Prasad ; Brost, >>>> Matthew ; Nilawar, Badal >>>> ; Tauro, Riana ; >>>> Gupta, Anshuman ; Poosa, Karthik >>>> >>>> Subject: [PATCH i-g-t 1/2] Revert "tests/intel/xe_pm_residency: Add >>>> an assertion on MI_STORE execution time" >>>> >>>> The reported time does not reflect the completion time of >>>> MI_STORE_DWORD; instead, it accounts for the delay in the scheduler. >>>> Therefore, it represents the time taken between xe_exec and syncobj_wait. >>> igt_assert(syncobj_wait(fd, &syncobj, 1, INT64_MAX, 0, NULL)); >>> elapsed = igt_nsec_elapsed(&tv); elapsed is taken right after the >>> syncobj_wait() therefore it represent the time taken by xe_exec + >> syncobj_wait, total time taken for completion of job. >>> Thanks, >>> Anshuman. >> >> >> That's true, while writing "time taken between xe_exec and syncobj_wait" >> , I meant to convey in between start of xe_exec and syncobj_wait completion. >> Will rephrase commit message before pushing. > Why do we want to remove assertion ? We don't want to write IGT to make CI happy it is to catch the bugs in KMD. Even in this case as well this is a bug from Linux Kernel. > I don't agree with removal of assertion. Few issues with this assertion. 1) IGT has --inactivity-timeout of 90 sec, which means you will not hit this assertion ever and SIGQUIT will be called if time between start of xe_exec and syncobj completion is ~0.9 sec. 2) Even 0.9 sec of delay is something huge for kernel. So why IGT assumes anything less than 1.2 sec is safe. Isn't it just to make 99% of idle time safe. This assertion solves no purpose, if IGT silently passes for anything less than 1.2 sec, assume 1.1sec (Isn't it huge delay for wq submission). BR Himal > Thanks, > Anshuman. >> >> Thanks for pointing this. >> >> Himal >> >> >>>> >>>> This reverts commit 92825ed72be61c5419d95db944fef1c9dda2215a. >>>> >>>> Cc: Matthew Brost >>>> Cc: Badal Nilawar >>>> Cc: Riana Tauro >>>> Cc: Anshuman Gupta >>>> Cc: Karthik Poosa >>>> Signed-off-by: Himal Prasad Ghimiray >>>> >>>> --- >>>> tests/intel/xe_pm_residency.c | 9 --------- >>>> 1 file changed, 9 deletions(-) >>>> >>>> diff --git a/tests/intel/xe_pm_residency.c >>>> b/tests/intel/xe_pm_residency.c index 772fe9b57..f4d05889c 100644 >>>> --- a/tests/intel/xe_pm_residency.c >>>> +++ b/tests/intel/xe_pm_residency.c >>>> @@ -144,15 +144,6 @@ static void exec_load(int fd, struct >>>> drm_xe_engine_class_instance *hwe, unsigned >>>> 1e-3 * submit, >>>> 1e-3 * (elapsed - submit)); >>>> >>>> - /* >>>> - * MI_STORE_DWORD generally completes within couple of >>>> ms. >>>> - * Assert if it takes more than 1.2 seconds, as it will cause >>>> - * IGT test to timeout due to sleep of 120 seconds which is >>>> - * the current per test timeout. Currently there is no way to >>>> - * read this timeout from IGT test. >>>> - */ >>>> - igt_assert((uint64_t)elapsed < (uint64_t)(1.2 * >>>> NSEC_PER_SEC)); >>>> - >>>> syncobj_reset(fd, &syncobj, 1); >>>> >>>> /* >>>> -- >>>> 2.34.1 >>> >