[webkit-dev] Anyone else having these problems with run-webkit-tests?

Darin Adler darin at apple.com
Sun Mar 23 13:39:36 PDT 2014

On Mar 23, 2014, at 12:52 PM, Benjamin Poulain <benjamin at webkit.org> wrote:

> On 3/23/14, 12:15 PM, Darin Adler wrote:
>> - Towards the end of the run, the tests run slowly, over a second per test on my 3.5GHz i7 iMac with tons of memory, which is about 10X too slow I think. The sample shows the vast majority of the time is spent in JavaScript garbage collection. This is running mostly the svg/custom tests.
> Yep. The time from 31k to 33k is a long as from 0 to 31k :(
>> - Towards the end of the run, instead of the 8 parallel copies of DumpRenderTree, only 1 copy of DumpRenderTree seems to run. This is running mostly the svg/custom tests.
> I think the problem is we can only run DumpRenderTree in parallel on different folders. Toward the end, everything left is one or two slow folders.

Maybe we need to find out why we are getting this slow garbage collection, then. The “one folder at a time” explains part of this, but not why svg/custom ends up being so slow.

Not super-urgent, I guess, but might be a real GC bug of some sort?

— Darin

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