User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 When downloading attachments or documents the first download after I have opened Firefox works excellently, but then it gets progressively worse until the system gets stuck and I have to use Force Quit to close Firefox. When I reopen Firefox that same document will now download in a snap! That has been happening for some time. I wish to add that I am delighted with the Firefox/Thunderbird system. Reproducible: Always Steps to Reproduce: 1.Download a document (e.g., an article from a scientific journal) 2.Download a second document 3.etc, etc Actual Results: As discussed above, downloads deteriorate, require more and more time, until the system gets stuck and I have to use Force Quit. Then, on relaunching Firefox, no problem until several download attempts later - all different articles or attachments. Expected Results: Downloads should be equally efficient every time.
I don't have any theory for why one session worth of entries would slow things down (unless a session involves hundreds or thousands of downloads), but: what do you have for Preferences/Privacy/Download Manager History's "Remove files from..."? If it's "When Firefox Exits" (which seems likely, if exiting cures the problem), could you try for a while with it set to "Upon Successful Download" to see if getting the entries out of the history works around the problem? (And also to see if it does realize that it has successfully completed the downloads, which would be a problem if it doesn't.)
When firefox progressively gets slow download after download, I've seen on 'top' monitor that firefox used memory growth to over 300 Mb and the entire system suffer the low free memory. May be that there is a big memory leak on firebird code? (problem seen on Linux version. I didn't test on windows version)
(In reply to comment #2) > When firefox progressively gets slow download after download, I've seen on 'top' > monitor that firefox used memory growth to over 300 Mb and the entire system > suffer the low free memory. > May be that there is a big memory leak on firebird code? > > (problem seen on Linux version. I didn't test on windows version) > It would appear that the same problem may be occuring on Mac. Now that I do not have to close Firefox so often, I have run into the "out of memory" problem.
I continue having these problems. At the beginning Firefox works well, but as I continue subsequent downloads it becomes progressively worse. So much so that I have now resorted to use Safari for downloads, and that works like a charm. Pleas advise what further changes/corrections I should try, other than what you advised, or whether these are problems you expect to correct in the next version of Firefox.
I see this bug too on Windows. The download window takes about 20 seconds to open up, and memory usage grows hugely whenever downloading any file in Firefox. Platform and OS should be changed to "All" as it's been reported here on Linux, Mac, and Windows.
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Status: UNCONFIRMED → RESOLVED
Last Resolved: 14 years ago
Resolution: --- → EXPIRED
I have observed behavior in FF 18.104.22.168 under win2K-sp4 that seems to be the same bug. More exactly, when there are numerous old downloads (say >50) in the download history, starting to download a file brings all firefox activity to a halt for something like 20 secs (1.7GHz dual Xeon machine), with firefox using 100% of 1 processor, until the download is nearly complete. Clearing the download history completely cures this problem (using "clean up" in the downloads window). I have not gone through another 50 downloads to check it, but it may be useful to know that the download history contained one stray download that had never completed. Note that I have autoclearing of the download history turned off. Since this totally kills performance, I suggest that either the bug be fixed, or the option to only remove download history manually be changed so that no more than some reasonable amount of history be kept that will not destroy performance. (Of course, that's assuming that I'm right in guessing the cause.)
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