Oh.... Well, here's another patch. :-) On Tue, Mar 29, 2016 at 5:55 PM, ron minnich <[email protected]> wrote:
> I was only kidding anyway. I included it as another target :-) > > > On Tue, Mar 29, 2016 at 2:48 PM Dan Cross <[email protected]> wrote: > >> Don't include that part, then; the rdtsc and rdtscp changes are what you >> want. >> >> On Tue, Mar 29, 2016 at 5:46 PM, ron minnich <[email protected]> wrote: >> >>> but this was not what we want :-) >>> >>> x86_64-ucb-akaros-gcc -Ofast -mfxsr -mxsave -mxsaveopt -o >>> fputest fputest.c >>> >>> On Tue, Mar 29, 2016 at 2:42 PM Dan Cross <[email protected]> wrote: >>> >>>> FYI, please see attached patch. >>>> >>>> On Mon, Mar 28, 2016 at 6:32 PM, ron minnich <[email protected]> >>>> wrote: >>>> >>>>> The timing is per-operation, not per total run. Even if we get one >>>>> timer interrupt in there, it's going to be one bad data point. I'm fine >>>>> with that. >>>>> >>>>> But, me, i'm only taking 128 samples. I think that's more the enough >>>>> and it runs in maybe several dozen microseconds. >>>>> >>>>> ron >>>>> >>>>> On Mon, Mar 28, 2016 at 3:29 PM ron minnich <[email protected]> >>>>> wrote: >>>>> >>>>>> I'm still testing on linux. Akaros comes later :-) >>>>>> >>>>>> On Mon, Mar 28, 2016 at 2:59 PM Barret Rhoden <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> On 2016-03-28 at 21:46 ron minnich <[email protected]> wrote: >>>>>>> > https://github.com/akaros/fputest >>>>>>> > >>>>>>> > >>>>>>> > We're getting there. It's now using gcc intrinsics, which hopefully >>>>>>> > are more correct. Still trying to get sane timing for the "no op" >>>>>>> > case. >>>>>>> >>>>>>> i'd be concerned if the intrinsics are right and our own versions are >>>>>>> wrong. hopefully that won't be the case after this gets sorted out. >>>>>>> >>>>>>> >>>>>>> given that n = 1000000 and rdtsc alone takes O(30) ticks, you're >>>>>>> probably getting interference from the timer IRQ, even on Akaros >>>>>>> Core 0. >>>>>>> here's two quick things to try: >>>>>>> >>>>>>> call uthread_mcp_init() somewhere in main. that'll make you an MCP. >>>>>>> it's a bit hacky. verify that it's working with a ps or pip. >>>>>>> >>>>>>> check your tsc overhead against __procinfo.timing_overhead or against >>>>>>> the console output during boot, e.g. >>>>>>> >>>>>>> TSC overhead (Min: 32, Max: 36) >>>>>>> >>>>>>> i didn't look at any of the actual FPU stuff for issues yet. >>>>>>> >>>>>>> barret >>>>>>> >>>>>>> -- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "Akaros" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to [email protected]. >>>>>>> To post to this group, send email to [email protected]. >>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>> >>>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Akaros" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> To post to this group, send email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Akaros" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Akaros" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Akaros" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > -- > You received this message because you are subscribed to the Google Groups > "Akaros" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Akaros" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. For more options, visit https://groups.google.com/d/optout.
0001-Fix-setup-to-return-zero-on-success-and-not-fail-if-.patch
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