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From Jeff Trawick <trawi...@bellsouth.net>
Subject Re: file/mmap buckets, subrequests, pools, 2.0.18
Date Wed, 06 Jun 2001 15:34:17 GMT
<rbb@covalent.net> writes:

> > Note that with a simple situation I just recreated, the mmap bucket
> > for a small file is being held by the content-length filter (it did
> > ap_save_brigade).
> >
> > I'm confused...  What would ap_sub_req_output_filter() be able to do
> > to help?
> 
> That depends.  Was this a sub-request?  If so, then when the
> sub_req_output_filter was called, it would have converted the mmap bucket
> into a heap bucket.  If this wasn't a sub-request, then you don't really
> have a problem.  The only time this should still be a problem, is if the
> file is >9k, and for some reason we didn't stream it.  I can't think of
> when that would happen though.

The file/mmap bucket was created for a sub-request by handle_include.
Here is the backtrace from when we get to ap_content_length_filter:

#0  ap_content_length_filter (f=0x42089014, b=0x42093014) at
 protocol.c:853
#1  0x80b60bf in ap_pass_brigade (next=0x42089014, bb=0x42093014) at
 util_filter.c:242
#2  0x807751d in ap_byterange_filter (f=0x42088014, bb=0x42093014) at
 http_protocol.c:2263
#3  0x80b60bf in ap_pass_brigade (next=0x42088014, bb=0x42093014) at
 util_filter.c:242
#4  0x806c61d in send_parsed_content (bb=0xbfff8e58, r=0x42065014,
 f=0x42087014) at mod_include.c:2601
#5  0x806ccab in includes_filter (f=0x42087014, b=0x42093014) at
 mod_include.c:2770
#6  0x80b60bf in ap_pass_brigade (next=0x42087014, bb=0x42093014) at
 util_filter.c:242
#7  0x80c0049 in ap_sub_req_output_filter (f=0x4206a014,
 bb=0x42093014) at request.c:813
#8  0x80b60bf in ap_pass_brigade (next=0x4206a014, bb=0x42093014) at
 util_filter.c:242
#9  0x80bdc7c in default_handler (r=0x42065014) at core.c:2995
#10 0x80a8c71 in ap_run_handler (r=0x42065014) at config.c:133
#11 0x80a938e in ap_invoke_handler (r=0x42065014) at config.c:292
#12 0x80c0b3d in ap_run_sub_req (r=0x42065014) at request.c:1100
#13 0x806868b in handle_include (ctx=0x4204e014, bb=0xbfffd4b8,
 r=0x41fe5014, f=0x42040014, head_ptr=0x81309a0,
 inserted_head=0xbfffd448)
    at mod_include.c:850
#14 0x806c2bd in send_parsed_content (bb=0xbfffd4b8, r=0x41fe5014,
 f=0x42040014) at mod_include.c:2516
#15 0x806ccab in includes_filter (f=0x42040014, b=0x42082014) at
 mod_include.c:2770
#16 0x80b60bf in ap_pass_brigade (next=0x42040014, bb=0x4204c014) at
 util_filter.c:242
#17 0x80bdc7c in default_handler (r=0x41fe5014) at core.c:2995
#18 0x80a8c71 in ap_run_handler (r=0x41fe5014) at config.c:133
#19 0x80a938e in ap_invoke_handler (r=0x41fe5014) at config.c:292
#20 0x80788f1 in process_request_internal (r=0x41fe5014) at
 http_request.c:378
#21 0x8078a37 in ap_process_request (r=0x41fe5014) at
 http_request.c:444
#22 0x8073543 in ap_process_http_connection (c=0x41fdb014) at
 http_core.c:280
#23 0x80b4811 in ap_run_process_connection (c=0x41fdb014) at
 connection.c:82
#24 0x80b4a38 in ap_process_connection (c=0x41fdb014) at connection.c:216

-- 
Jeff Trawick | trawickj@bellsouth.net | PGP public key at web site:
       http://www.geocities.com/SiliconValley/Park/9289/
             Born in Roswell... married an alien...


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