Better scheduling

Benoit Girard bgirard at mozilla.com
Tue Jan 26 16:23:13 UTC 2016


Sorry, for my bug reproduction I was just gecko' RR mode. However I'm
fairly convinced that I wouldn't of reproduced the bug without it. I do
plan on trying the RR chaos mode again.

On Mon, Jan 25, 2016 at 8:57 PM, Robert O'Callahan <robert at ocallahan.org>
wrote:

> On Tue, Jan 26, 2016 at 2:50 PM, Kyle Huey <me at kylehuey.com> wrote:
>
>> We talked a bit on IRC a few weeks ago about a bug I ran into that wasn't
>> reproducible in rr, because rr disallows context switching at futex wake
>> calls, and you said you were working on some stuff for introducing more
>> interesting scheduling.  How is that going?
>>
>
> It's going well!
> https://github.com/mozilla/rr/commits/chaos
> (Warning: I reserve the right to edit history on this branch.)
> With this branch, I have been able to reproduce a couple of intermittents,
> and Benoit Girard has reproduced (at least) one as well. I'm very excited
> because this is a hard problem and the approach I came up with is not
> obvious (it took me several tries to get anywhere :-) ). I was planning to
> get some more results (i.e. actually record and debug some real top-orange
> bugs) before declaring victory and writing it up.
>
> Rob
> --
> lbir ye,ea yer.tnietoehr  rdn rdsme,anea lurpr  edna e hnysnenh hhe uresyf
> toD
> selthor  stor  edna  siewaoeodm  or v sstvr  esBa  kbvted,t
> rdsme,aoreseoouoto
> o l euetiuruewFa  kbn e hnystoivateweh uresyf tulsa rehr  rdm  or rnea
> lurpr
> .a war hsrer holsa rodvted,t  nenh hneireseoouot.tniesiewaoeivatewt sstvr
> esn
>
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>
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