From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: =?UTF-8?Q?Cl=c3=a9ment_Pit--Claudel?= Newsgroups: gmane.emacs.devel Subject: JSON encoding and decoding performance Date: Sat, 15 Apr 2017 01:35:45 -0400 Message-ID: <9b65fbad-154f-4a7d-1d1f-9d6e68d71455@mit.edu> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms070809090000010400030205" X-Trace: blaine.gmane.org 1492239590 29680 195.159.176.226 (15 Apr 2017 06:59:50 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 15 Apr 2017 06:59:50 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 To: Emacs developers Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Apr 15 08:59:43 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1czHgL-0007Xf-PF for ged-emacs-devel@m.gmane.org; Sat, 15 Apr 2017 08:59:41 +0200 Original-Received: from localhost ([::1]:55680 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1czHgR-0000OL-BJ for ged-emacs-devel@m.gmane.org; Sat, 15 Apr 2017 02:59:47 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60857) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1czGNH-0001iP-Uy for emacs-devel@gnu.org; Sat, 15 Apr 2017 01:35:57 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1czGNE-0005LS-TU for emacs-devel@gnu.org; Sat, 15 Apr 2017 01:35:55 -0400 Original-Received: from mout.kundenserver.de ([212.227.126.134]:64569) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1czGNE-0005Jo-Hd for emacs-devel@gnu.org; Sat, 15 Apr 2017 01:35:52 -0400 Original-Received: from [18.189.26.125] ([18.189.26.125]) by mrelayeu.kundenserver.de (mreue001 [212.227.15.168]) with ESMTPSA (Nemesis) id 0LsL60-1c1lzX3bMO-0122au for ; Sat, 15 Apr 2017 07:35:48 +0200 X-Provags-ID: V03:K0:rd/kz97kgT+zbmDrO2HDkwFJ7yBjQ9g6DtbfqUrs5i+GPDsxTE/ +/5xKvfCanm19Rt++WBVnqSrT0NQ3Go8FQdloaQb/0M8yfLUMDozzDtzwnXatN8REDIwPUT QkQQhz8TBax6Inu/d9yZ4qAUQPbFMPXaeZutKYWUu1cey26Gp75YhYPI9b/xKYE2n4HWW8Z awPwCxkm2OXjlOeOpgl7w== X-UI-Out-Filterresults: notjunk:1;V01:K0:vZYCQXVxwKM=:cOyT0jErPFpVuia4quECF6 oIibQcj5YUZysxVeX4ORpe3hhG1J3HeNmQbw/N+5MJhu/40XQFGUKWJ2a3JINpft0OCsyoJVk dpNROs6ZjDLCzTtd8uf35ahNHPrXl2WZ03LdX18lPMwXGO/6VI0iLZeITunK2ES7vCl+FhAx+ ttopUTNDkwXOz6Jd84GF6cOkuMfRCba2BitxHpYqkArZFpoP3/uIh+WswQc5Mu4jswA4pgsHx d+5YxEIACz9y6UFoGvGCZvIHOdR+tnXhs7ng/KS9Zjj7Z3oFYTuDBTcFPJDE/kj3/HHa4BIMt 1O6pih9nxfpiDH5d4fZj2s+kIzlvpz/8DM9IGlf1wWdZQOUUmeiwMYQNNjb+66KC/pUPZnqh6 hnOrnfLJaB1pCNjHKz5ZJCg1e7TqauBFvbtfm46j7mHDLxNZ0QscZ3y6OcAihwcc9nK3tW8/n ZM3X/Lsy0jbEsafQF5Iwv6zUuht97pml+seFnSQMIlP9DAc2VqOM4bCOdEWakXNUmwz85KaX1 S59gV2IRrGD54LzBaQzxK7Fv7ugYO07dauiQTtLeP1SLAhZck3DkVErG7OrdsORakn8VXC6Tu C2gv2XdWu1nzBlAU+jtzfiyGYAAQYZVroEysR362j3q6PyH7N71aNDf7QXGVXXWQJEPULI9Ik 6MBTf/Ovr3kEf14GycgfcJJW+HEaZwvOM2I1oJZMKR5P1EnaSO+fk1EP5p6KpxAZtf68= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 212.227.126.134 X-Mailman-Approved-At: Sat, 15 Apr 2017 02:59:10 -0400 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:213968 Archived-At: This is a cryptographically signed message in MIME format. --------------ms070809090000010400030205 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi emacs-devel, I'm running into performance issues with JSON encoding and decoding. I h= ave a language mode whose eldoc function makes a call to a language serve= r running as a subprocess, and small lags tend to be visible when moving = quickly around the buffer. Profiling suggests that roughly 25 percent of= the time is spent encoding and decoding JSON strings. Would there be strong objections to supporting a C JSON library in additi= on to the current ELisp implementation? This was suggested at one point = in https://lists.gnu.org/archive/html/bug-gnu-emacs/2015-03/msg00770.html= . It would be similar in spirit to supporting libxml-parse-region along= xml-parse-region, and it could provide nice speed boosts to json-heavy E= Lisp programs. Cheers, Cl=C3=A9ment. --------------ms070809090000010400030205 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC A8gwggPEMIIDLaADAgECAhAFTpEFd7pdiMcr6MwkhoRoMA0GCSqGSIb3DQEBCwUAMGwxCzAJ BgNVBAYTAlVTMRYwFAYDVQQIEw1NYXNzYWNodXNldHRzMS4wLAYDVQQKEyVNYXNzYWNodXNl dHRzIEluc3RpdHV0ZSBvZiBUZWNobm9sb2d5MRUwEwYDVQQLEwxDbGllbnQgQ0EgdjEwHhcN MTYwNzIyMjAzNzM3WhcNMTcwNzMxMjAzNzM3WjCBrDELMAkGA1UEBhMCVVMxFjAUBgNVBAgT DU1hc3NhY2h1c2V0dHMxLjAsBgNVBAoTJU1hc3NhY2h1c2V0dHMgSW5zdGl0dXRlIG9mIFRl Y2hub2xvZ3kxFTATBgNVBAsTDENsaWVudCBDQSB2MTEeMBwGA1UEAxMVQ2xlbWVudCBGIFBp dC1DbGF1ZGVsMR4wHAYJKoZIhvcNAQkBFg9jcGl0Y2xhQE1JVC5FRFUwggEiMA0GCSqGSIb3 DQEBAQUAA4IBDwAwggEKAoIBAQDsGIVjnDysgVLsrxleGDQEZl+iGBLP/jTIQQ+YIyZZYRVI 99cMACDLph3Qcm4BaRcTho8JOavaLhh4Z2+ZmSfjweyV0xnZWBJCTBeNI1oEoyJNbjFHWTIl TTvTt5dIjs3a+zFYTw1MWAZ4pafu9Pf9h/HaEPTUKlzSZxDeMvPOcgy4EdnY8dtL01we1Ify 75izdeVA5I5w6zRXctD3CGoXBrGiItYDMqWBK9TXYto3nv/Gqr9uww7OVp71lL3NU5B3Sf/L KluHbBFvTOSzW2/SKY1Rx7vr5y+pB3x8dlAYUW6u7pRFDVDHPMWP++ywzdBfLXifLjYu559Q 6hzHTYbPAgMBAAGjgaEwgZ4wCQYDVR0TBAIwADARBglghkgBhvhCAQEEBAMCBaAwHQYDVR0l BBYwFAYIKwYBBQUHAwQGCCsGAQUFBwMCMAsGA1UdDwQEAwIF4DAdBgNVHQ4EFgQU7aMDTdzd UPsZO6dMaXbmqp2doQUwMwYDVR0fBCwwKjAooCagJIYiaHR0cDovL2NhLm1pdC5lZHUvY2Ev bWl0Y2xpZW50LmNybDANBgkqhkiG9w0BAQsFAAOBgQC/dYWdWhW8tzDOax/vqKDpffMjVeT2 ITDAndaxp6RTMKo+TWczZJ3e3xaKHMmTKvvtL94l1gcxFkWwKeZY47IQB5r/6IodFek6RWMg BjoypsLaE+f/tRw3iNds+jJyrMpRqRbEIBvxMTwhYc5MQU9o4xOgg4TXPHH6nf6VAm6+TjGC A7EwggOtAgEBMIGAMGwxCzAJBgNVBAYTAlVTMRYwFAYDVQQIEw1NYXNzYWNodXNldHRzMS4w LAYDVQQKEyVNYXNzYWNodXNldHRzIEluc3RpdHV0ZSBvZiBUZWNobm9sb2d5MRUwEwYDVQQL EwxDbGllbnQgQ0EgdjECEAVOkQV3ul2IxyvozCSGhGgwDQYJYIZIAWUDBAIBBQCgggIBMBgG CSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8XDTE3MDQxNTA1MzU0NVow LwYJKoZIhvcNAQkEMSIEIEnaNzOytLXtjq+pBOr8yonM5UOQEG84FrEd+GcnanKSMGwGCSqG SIb3DQEJDzFfMF0wCwYJYIZIAWUDBAEqMAsGCWCGSAFlAwQBAjAKBggqhkiG9w0DBzAOBggq hkiG9w0DAgICAIAwDQYIKoZIhvcNAwICAUAwBwYFKw4DAgcwDQYIKoZIhvcNAwICASgwgZEG CSsGAQQBgjcQBDGBgzCBgDBsMQswCQYDVQQGEwJVUzEWMBQGA1UECBMNTWFzc2FjaHVzZXR0 czEuMCwGA1UEChMlTWFzc2FjaHVzZXR0cyBJbnN0aXR1dGUgb2YgVGVjaG5vbG9neTEVMBMG A1UECxMMQ2xpZW50IENBIHYxAhAFTpEFd7pdiMcr6MwkhoRoMIGTBgsqhkiG9w0BCRACCzGB g6CBgDBsMQswCQYDVQQGEwJVUzEWMBQGA1UECBMNTWFzc2FjaHVzZXR0czEuMCwGA1UEChMl TWFzc2FjaHVzZXR0cyBJbnN0aXR1dGUgb2YgVGVjaG5vbG9neTEVMBMGA1UECxMMQ2xpZW50 IENBIHYxAhAFTpEFd7pdiMcr6MwkhoRoMA0GCSqGSIb3DQEBAQUABIIBAG2nTlA2u420SUwn UIi7H7GYOpjzxIvcdeXCDJ1cor3QsnSFFoHEY5AbJwxHTIulJE5P1ojYkoNJ2I5pV//jBE50 /AfEbS5A3SdcKRKa9neQSmR0Lj5Gr4A31JMGFO13ag8LmHk1m6AaTMnEPFlZbQFbELxgCIo9 fnvl1M4PcRVdNA0utaf4mqYAXT2HzI2ESG/4OKslBE2WMaxObf5PWnmZawoDgFEsLRuWsUbY HnfaYEa14hpchw6ewOhr/PpRmDuw+wCla3w7jx/lzjZsOvSPv3IEzlsy1VMdcLn9EGh/OkQa 3mxsNrdn7kIfdLhOTF1XcSsR1TFD3Wx/Q96MOXYAAAAAAAA= --------------ms070809090000010400030205--