RESOLVED WORKSFORME 50704
lots of tests timing out running mac chromium drt under heavy concurrency 
https://bugs.webkit.org/show_bug.cgi?id=50704
Summary lots of tests timing out running mac chromium drt under heavy concurrency
Dirk Pranke
Reported 2010-12-08 11:49:43 PST
Created attachment 75937 [details] log of running 4 Mac Chromium DRT's in parallel Using the patch posted to bug 48820, I can run Mac DRT and Chromium TestShell on my Mac Pro (Snow Leopard) using up to 32 child processes. However, running with more than 5 Chromium DRT children I get tons of processes timing out. The first set of logs shows my normal run with 4 and 8 child processes. The 4-process run completed in little over a minute; I interrupted the 8-process run after 25 and still had several thousand tests remaining.
Attachments
log of running 4 Mac Chromium DRT's in parallel (35.00 KB, text/plain)
2010-12-08 11:49 PST, Dirk Pranke 		no flags
Details
log of running 8 Mac Chromium DRT's in paralllel (281.39 KB, text/plain)
2010-12-08 11:51 PST, Dirk Pranke 		no flags
Details
verbose log of 8 Mac Chromium DRT's in parallel, interrupted after a couple of minutes (403.83 KB, text/plain)
2010-12-08 11:51 PST, Dirk Pranke 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Dirk Pranke
Comment 1 2010-12-08 11:51:12 PST
Created attachment 75938 [details] log of running 8 Mac Chromium DRT's in paralllel
Dirk Pranke
Comment 2 2010-12-08 11:51:56 PST
Created attachment 75939 [details] verbose log of 8 Mac Chromium DRT's in parallel, interrupted after a couple of minutes
Dirk Pranke
Comment 3 2010-12-08 13:09:03 PST
Okay, commenting out the WebKitDriver branch seems to help quite a bit, if not solve it completely. I'm also seeing another issue under load w/ Chromium DRT, but I'm suspecting that it's a different thing, so I'll file a different bug.
Dirk Pranke
Comment 4 2011-01-11 14:33:07 PST
I'm still seeing issues w/ this. I will start investigating.
Kent Tamura
Comment 5 2011-01-11 15:51:45 PST
I guess these timeouts occur due to Bug 50709.
Dirk Pranke
Comment 6 2011-01-31 22:53:19 PST
I am no longer seeing an unusual number of timeouts after having switched to just ChromiumDriver and making the changes suggested in bug 50709.
Dirk Pranke
Comment 7 2011-02-18 19:41:27 PST
closing as worksforme ...
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