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Re: clue for repos corruption?

From: Jan Hendrik <jan.hendrik_at_bigfoot.com>
Date: 2003-11-07 13:18:25 CET

Sorry for having bothered you with that stuff again. For two days it
was as described, just after I had posted that report working copy 2
joined the corruption game. Think we can finally close these
threads till the brandnew P10 with autogenerating terabytes of
RAM comes out. Or till Linux becomes something non-techies can
setup and use (what I expect never to happen, it will always take
programming and making and compiling before, stuff only people
with a university degree understand). One or more of
SVN/Apache/Berkeley are not meant to run in the Win2K
environment here.

With appropriate sarcasm - Jan Hendrik

Concerning clue for repos corruption?
Jan Hendrik wrote on 7 Nov 2003, 11:53, at least in part:

> Hi all out there!
> It could be I found a clue for the constant repos corruption here. It
> seems possible that changed timestamps without files being actually
> changed causes memory not being released and furtheron leads to the
> desaster:
> Starting once more with the notoriously corrupted repository from
> which I dumpfiltered all binary files, and two working copies, all on
> my local machine, both accessing the repos through http, things went
> fine for some time. Later I added GIF and JPG files step by step. Then
> troubles began again.
> But only with *one* working copy! The other working copy
> continued operating fine, commits & updates would slightly raise
> memory consumption and then fall back to the level before. But that
> other working copy always raises memory usage to the ceiling and
> corrupts the repos. And even after SVN has terminated with the timeout
> error memory consumption goes up and up and up ...
> Finally I managed to complete update on a minor directory before the
> memory ceiling was reached. But then memory was *not* released. Apache
> keeps every bit it has collected during update. Only if stopped this
> memory is released.
> Checking out a further working copy was no problem, it operates
> fine, just as wc2. The three working copies are just about 2
> revisions apart, perhaps 15-20 files different/new.
> There is, however, one difference that may give a clue:
> Some files have the timestamp changed due to uploading to the
> webserver. It should be less than 50 files, but I can't say exactly.
> We discussed this before. With dial up having a working copy on the
> webserver is no alternative, nor is using export as it would result in
> complete upload every time. Someone suggested rsynch, however, I
> cannot setup an rsynch on the server and as far as I understood
> clients for Windows are more or less experimental. Anyway, having
> computed checksums over dial up does not sound different from having a
> working copy online. The tool I currently use compares filesize and
> timestamp and if at least one is different it considers the files
> being different. After upload it sets the timestamp of the local file
> to that on the server. That's why I get timestamps changed in the
> working copy.
> I won't say this could explain everything. But it seems to explain why
> troubles were nearly guaranteed when the repos was on another machine
> - it is always my working copy that gets timestamps changed. There
> still might be an underlying memory problem, but not with "normal" SVN
> operation for else corruption should happen with the other local
> working copies, too.
> Best regards
> Jan Hendrik
> ---------------------------------------
> Freedom quote:
> Capitalism is not an 'ism.'
> It is closer to being the opposite of an 'ism,'
> because it is simply the freedom of ordinary people
> to make whatever economic transactions they can mutually agree
> to.
> -- Dr. Thomas Sowell
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Received on Fri Nov 7 13:14:39 2003

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