Also, add more misc details to the 'react' breadcrumb trail. Also,
save get(react) results into dbg2 whenever we write a private projection,
very valuable for debugging.
Also: cleanup PULSE code, add regression commands as option and
controls with some new environment variables. These regression
sequences were responsbile for several fruitful debugging sessions,
so we keep them for posterity and for their ability (with new seeds
and PULSE) to find new interleavings.
%% Demo/exploratory hackery to check relative speeds of dealing with
%% checksum data in different ways.
%%
%% Summary:
%%
%% * Use compact binary encoding, with 1 byte header for entry length.
%% * Because the hex-style code is *far* slower just for enc & dec ops.
%% * For 1M entries of enc+dec: 0.215 sec vs. 15.5 sec.
%% * File sorter when sorting binaries as-is is only 30-40% slower
%% than an in-memory split (of huge binary emulated by file:read_file()
%% "big slurp") and sort of the same as-is sortable binaries.
%% * File sorter slows by a factor of about 2.5 if {order, fun compare/2}
%% function must be used, i.e. because the checksum entry lengths differ.
%% * File sorter + {order, fun compare/2} is still *far* faster than external
%% sort by OS X's sort(1) of sortable ASCII hex-style:
%% 4.5 sec vs. 21 sec.
%% * File sorter {order, fun compare/2} is faster than in-memory sort
%% of order-friendly 3-tuple-style: 4.5 sec vs. 15 sec.
This goes to show that mixing implementation and protocol and API
and lots of other stuff ... is cool for the quick hack to do one thing
but really sucks when trying to do more than one thing.
* Proof-of-concept only: add HTTP/1.0'ish 'PUT' interface to be the
rough equivalent of machi_cr_client:append_chunk/3
* Proof-of-concept only: add HTTP/1.0'ish 'GET' interface to be the
rough equivalent of machi_cr_client:read_chunk/4
Example use: `append_chunk`
% curl http://127.0.0.1:4444/foo -0 -T /etc/hosts -v
* Hostname was NOT found in DNS cache
* Trying 127.0.0.1...
* Connected to 127.0.0.1 (127.0.0.1) port 4444 (#0)
> PUT /foo HTTP/1.0
> User-Agent: curl/7.37.1
> Host: 127.0.0.1:4444
> Accept: */*
> Content-Length: 338
>
* We are completely uploaded and fine
* HTTP 1.0, assume close after body
< HTTP/1.0 201 Created
< Location: foo.50EI18AX.21
< X-Offset: 3052
< X-Size: 338
<
* Closing connection 0
Example_use: `read_chunk`
curl 'http://127.0.0.1:4444/foo.50EI18AX.21?offset=3052&size=338' -0 -v
* Hostname was NOT found in DNS cache
* Trying 127.0.0.1...
* Connected to 127.0.0.1 (127.0.0.1) port 4444 (#0)
> GET /foo.50EI18AX.21?offset=3052&size=338 HTTP/1.0
> User-Agent: curl/7.37.1
> Host: 127.0.0.1:4444
> Accept: */*
>
* HTTP 1.0, assume close after body
< HTTP/1.0 200 OK
< Content-Length: 338
<
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
##
127.0.0.1 localhost
127.0.0.1 test.localhost
255.255.255.255 broadcasthost
::1 localhost
fe80::1%lo0 localhost
# Xxxxxxx Yyyyy
192.168.99.222 zzzzz
127.0.0.1 aaaaaaaa.bb.ccccccccc.com
* Closing connection 0
