Re: RFC: output json from notmuch?

[David Bremner <david@tethera.net>]

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On Sun, 13 Dec 2009 19:21:02 -0400, David Bremner <david@tethera.net> wrote:
> 
> Attachments:  json output of a message from carl, and the equivalent
> sexpr as parsed by json.el.  
> 
uh, right. Second time lucky.

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{
    "match": true,
    "header": {
        "Cc": "",
        "Subject": "Re: [notmuch] Patch for xapian defect #250",
        "From": "Carl Worth <cworth@cworth.org>",
        "summary": "Carl Worth <cworth@cworth.org> (Fri. 01:13) ()",
        "To": "Kan-Ru Chen <kanru@kanru.info>, notmuch <notmuch@notmuchmail.org>",
        "Bcc": "",
        "Date": "Thu, 10 Dec 2009 21:13:07 -0800"
    },
    "id": "87638e3xgc.fsf@yoom.home.cworth.org",
    "filename": "/home/bremner/Maildir/.list.notmuch/new/1260508402.30807.pivot.cs.unb.ca",
    "depth": 1,
    "parts": [
        {
            "content-type": "text/plain",
            "id": 3,
            "text": "On Thu, 10 Dec 2009 15:00:42 +0800, Kan-Ru Chen <kanru@kanru.info> wrote:\n> The termlist is already sorted, so this is the patch trying to minimize\n> the modification of database as suggested in the comment and Carl's\n> TODO file.\n\nFantastic, Kan-Ru!\n\n> My poor profiling shows not much, but some improvement.\n\nNow you're just understating for sake of the pun. A 5-6x performance\nimprovement looks great. And I see that as well in my testing:\n\nBefore:\n\n\t$ time notmuch tag +foo tag:sent\n\treal 3m18.067s\n\t$ time notmuch tag -foo tag:sent\n\treal 3m12.940s\n\nAfter:\n\n\t$ time notmuch tag +foo tag:sent\n        real 0m31.497s\n\t$ time notmuch tag -foo tag:sent\n\treal 0m28.722s\n\nI didn't flush the OS caches between runs, but a subsequent run of the\n\"before\" code still performed similarly slow:\n\n\t$ time notmuch tag +foo tag:sent\n\treal 3m7.172s\n\nAnd if I *had* used cold caches for every run the benefit of the patch\nwould have looked even better.\n\nAnyway, we should get this upstream to the Xapian folks straight\naway. I expect they'll want to see a patch to the chert backend as well\nas the flint backend, (but fortunately the relevant code looks very\nsimilar if not identical).\n\nThanks again,\n\n-Carl\n"
        },
        {
            "content-type": "application/pgp-signature",
            "id": 4
        },
        {
            "content-type": "text/plain",
            "id": 5,
            "text": "_______________________________________________\nnotmuch mailing list\nnotmuch@notmuchmail.org\nhttp://notmuchmail.org/mailman/listinfo/notmuch\n"
        }
    ]
}

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((parts .
	[((text . "On Thu, 10 Dec 2009 15:00:42 +0800, Kan-Ru Chen <kanru@kanru.info> wrote:\n> The termlist is already sorted, so this is the patch trying to minimize\n> the modification of database as suggested in the comment and Carl's\n> TODO file.\n\nFantastic, Kan-Ru!\n\n> My poor profiling shows not much, but some improvement.\n\nNow you're just understating for sake of the pun. A 5-6x performance\nimprovement looks great. And I see that as well in my testing:\n\nBefore:\n\n	$ time notmuch tag +foo tag:sent\n	real 3m18.067s\n	$ time notmuch tag -foo tag:sent\n	real 3m12.940s\n\nAfter:\n\n	$ time notmuch tag +foo tag:sent\n        real 0m31.497s\n	$ time notmuch tag -foo tag:sent\n	real 0m28.722s\n\nI didn't flush the OS caches between runs, but a subsequent run of the\n\"before\" code still performed similarly slow:\n\n	$ time notmuch tag +foo tag:sent\n	real 3m7.172s\n\nAnd if I *had* used cold caches for every run the benefit of the patch\nwould have looked even better.\n\nAnyway, we should get this upstream to the Xapian folks straight\naway. I expect they'll want to see a patch to the chert backend as well\nas the flint backend, (but fortunately the relevant code looks very\nsimilar if not identical).\n\nThanks again,\n\n-Carl\n")
	  (id . 3)
	  (content-type . "text/plain"))
	 ((id . 4)
	  (content-type . "application/pgp-signature"))
	 ((text . "_______________________________________________\nnotmuch mailing list\nnotmuch@notmuchmail.org\nhttp://notmuchmail.org/mailman/listinfo/notmuch\n")
	  (id . 5)
	  (content-type . "text/plain"))])
 (depth . 1)
 (filename . "/home/bremner/Maildir/.list.notmuch/new/1260508402.30807.pivot.cs.unb.ca")
 (id . "87638e3xgc.fsf@yoom.home.cworth.org")
 (header
  (Date . "Thu, 10 Dec 2009 21:13:07 -0800")
  (Bcc . "")
  (To . "Kan-Ru Chen <kanru@kanru.info>, notmuch <notmuch@notmuchmail.org>")
  (summary . "Carl Worth <cworth@cworth.org> (Fri. 01:13) ()")
  (From . "Carl Worth <cworth@cworth.org>")
  (Subject . "Re: [notmuch] Patch for xapian defect #250")
  (Cc . ""))
 (match . t))

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-- 
David Bremner                                  Professor, UNB Computer Science
bremner@unb.ca			           
http://www.cs.unb.ca/~bremner               Cross Appointment, UNB Mathematics
http://www.mitacs.ca/			   MITACS Atlantic Scientific Director