That stinks of a segfault. The admission to using Windows at the end makes me suspect it even more, as Windows has an unfortunate habit, due to the MPM implementation, of a thread segfault taking the whole server down with it, causing a several second delay while it cleans up the old process and replaces it with a new one (with mod_perl doing all its init stuff again)
I used to hate having to deal with that :) Having said that, I don't think it's a chunking issue, as httpd core handles that, not mod_perl. Can you supply more info? Not sure what, but my gut says there's a missing piece here. Issac On 14/12/2011 23:44, Andrew Merton wrote: > Hi -- > > I am getting the following message recurring in my log: > > Parent: child process exited with status 255 -- Restarting. > > followed by the process restart sequence. > > I have tracked it down to a call to $r->content which doesn't seem to > return properly. > > It would appear that > > 1. The POST request has Encoding-type: chunked (message total length > is ~5kb); > > 2. The client sends the HTTP headers, then pauses 3-4 seconds while it > generates the body of the message (confirmed with WireShark); > > 3. So when I call $r-content, when it succeeds I see a 3-4 second > pause before it completes; > > 4. If another request arrives during the call to $r->content, the > process aborts and restarts - I assume it is interfering with the > read() call in $r->content. > > Since the pause is so long, it is very likely to be interrupted even > though I only have 5 clients currently :( > > Given the the chunked implemenation in mod_perl 2.0 is apparently > incomplete, have I struck one area where this affects the result? > > Can anyone make suggestions as to how I can work around this problem? > I wondered about maybe moving my handler to the log phase (currently > it's a Response handler), by which time I assume the entire message > must be available, but it seems like a major kludge and presumably > would lead to other issues anyway. > > Or is there some multi-threading thing I should have done - currently > I have not really done anything specific... > > I am using Apache2.2 on Win7 (no flames please :)), with ActiveState > Perl "(v5.12.2) built for MSWin32-x86-multi-thread". > > Andrew > >
