In JSC EWS bots. For the other Debug EWS bots, (Like, WebCore Debug builds), I 
have no strong opinion.

-Yusuke

> On Jun 17, 2020, at 6:07 PM, Yusuke Suzuki <ysuz...@apple.com> wrote:
> 
> For EWS, we are running Release build right now. So in terms of stack traces, 
> nothing is changed.
> 
> -Yusuke
> 
>> On Jun 17, 2020, at 5:21 PM, Alexey Proskuryakov <a...@webkit.org 
>> <mailto:a...@webkit.org>> wrote:
>> 
>> 
>> I frequently find it critically useful to see stack traces from debug 
>> builds, because of no inlining. So I don't think that we should do this. A 
>> local build does not help when the issue is not readily reproducible.
>> 
>> - Alexey
>> 
>> 
>>> 17 июня 2020 г., в 1:36 PM, Mark Lam <mark....@apple.com 
>>> <mailto:mark....@apple.com>> написал(а):
>>> 
>>> Hi folks,
>>> 
>>> We're planning to switch the JSC EWS bot and build.webkit.org 
>>> <http://build.webkit.org/> Debug build and test bots to building with the 
>>> following set first:
>>> ./Tools/Scripts/set-webkit-configuration --force-opt=O3
>>> 
>>> This means the Debug builds will be built with optimization level forced to 
>>> O3.
>>> 
>>> Why are we doing this?
>>> 1. So that the JSC EWS will start catching ASSERT failures.
>>> 2. JSC stress test Debug bots have been timing out and not running tests at 
>>> all.  Hopefully, this change will fix this issue.
>>> 3. Tests will run to completion faster and we’ll catch regressions sooner.
>>> 
>>> The downside: crash stack traces will be like Release build stack traces.  
>>> But I don’t think we should let this deter us.  It’s not like there’s no 
>>> stack information.  And just as we do with debugging Release build test 
>>> failures, we can always do a Debug build locally to do our debugging.
>>> 
>>> We would like to apply this change to all Debug build and test bots, not 
>>> just the JSC ones.  Does anyone strongly object to this change?
>>> 
>>> Thanks.
>>> 
>>> Cheers,
>>> Mark
>>> 
>>> _______________________________________________
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>>> webkit-dev@lists.webkit.org <mailto:webkit-dev@lists.webkit.org>
>>> https://lists.webkit.org/mailman/listinfo/webkit-dev 
>>> <https://lists.webkit.org/mailman/listinfo/webkit-dev>
>> 
>> 
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> 
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