Bug 19986

Summary: Loading very large text file uses inordinate amounts of memory, and frequently locks up browser
Product: WebKit Reporter: Gavin Sherlock <gsherloc>
Component: New BugsAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: staikos, tonikitoo
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: Mac   
OS: OS X 10.5   
URL: https://cygnus.stanford.edu/SolexaRuns/080703_GA-EAS46_0002_209DG/Results/080703_GA-EAS46_0002_209DG_L1_eland_extended_pf.txt
Attachments:
Description Flags
Crash log none

Gavin Sherlock
Reported 2008-07-10 15:32:11 PDT
Steps to reproduce: 1. Go to bug URL 2. Wait 3. Boom Reproducible with latest nightly (r35075) and Version 3.1.2 (5525.20.1). Crash log to be attached. Note, I'm not sure you'll be able to access the url outside of stanford. The file itself is a text file of 479 MB (uncompressed), and even after gzipping, is still 129Mb. I can make it available if needs be.
Attachments
Crash log (26.81 KB, text/plain)
2008-07-10 15:32 PDT, Gavin Sherlock 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Gavin Sherlock
Comment 1 2008-07-10 15:32:40 PDT
Created attachment 22219 [details] Crash log
Mark Rowe (bdash)
Comment 2 2008-07-10 16:18:56 PDT
<rdar://problem/5571117>
Gavin Sherlock
Comment 3 2009-09-19 09:21:19 PDT
I tried this again, with an even larger file (350Mb), and it no longer crashed. It does use up a ton of memory (3Gb, plus 3Gb VM), which seems excessive, and the browser frequently locks up during loading, so I have reduced the bug priority and changed the title.
George Staikos
Comment 4 2009-09-19 09:31:46 PDT
This is a very old issue - dates back at least 4-5 years. The text runs are numerous and expensive. Antti did a lot of work to improve this since then.
Gavin Sherlock
Comment 5 2009-09-19 11:39:46 PDT
FYI, my testing in comment#3 was with the latest nightly, r48518
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