Date: Tue, 15 Dec 2009 19:36:37 +0000 (GMT) From: Iain Hibbert <plunky@rya-online.net> To: freebsd-bluetooth@freebsd.org Subject: obex transfer speeds Message-ID: <1260905798.329544.2767.nullmailer@galant.ukfsn.org> In-Reply-To: <1260285672.503038.542.nullmailer@galant.ukfsn.org> References: <20091201125054.44a00147@zelz27> <1259694948.961003.27487.nullmailer@galant.ukfsn.org> <1259695873.086896.28523.nullmailer@galant.ukfsn.org> <bb4a86c70912011525n56cf9187wfecd230daa3c9d1e@mail.gmail.com> <1260285672.503038.542.nullmailer@galant.ukfsn.org>
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This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --0-272804268-1260732731=:793 Content-Type: TEXT/PLAIN; CHARSET=US-ASCII Content-ID: <alpine.NEB.2.00.0912132008131.3373@localhost.> Hi, While obexapp is the subject, I wonder what kind of transfer speeds people get? Normally I use obexapp to copy files to and from my phone but they are not much big files and I've never bothered with speed tests.. I have been working some long hours at a tedious job lately and thought I would listen to some music off my phone. However, transferring tracks is tedious. I have calculated (see attached program) that I'm getting about 12-15 kbytes/second by using windows mobile bluetooth explorer in suck mode (navigate to my laptop, then copy and paste the directory to the sd card) using obexapp to push files seemed to go faster, about 15-20 kbytes/second initially but obexapp doesn't handle sending complete directories so I had to write a wrapper script and then when I left this going overnight it only transferred about 15 tracks (I think a resource leak in the phone, which needed a reboot afterwards) So, my question is what kind of speeds should we normally expect with OBEX? I thought bluetooth should be faster than that but I don't really know what version my phone has (laptop has Broadcom BCM2045B 2.0+EDR and specs I found on the web says HTC Elf has 2.0 but I don't know about EDR) and I only have a single computer so while a speed test would be possible with two dongles, there could be interference in the stack. Has anybody done anything like that in the past? I read some comments previously on the list and have raised the MTU to 8192 bytes as suggested for an older obexapp but that hasn't improved the speed much. Any other ideas? regards, iain --0-272804268-1260732731=:793 Content-Type: TEXT/PLAIN; CHARSET=US-ASCII; NAME=btstat.c Content-Transfer-Encoding: BASE64 Content-ID: <alpine.NEB.2.00.0912131932110.793@localhost.> Content-Description: bytes per second program Content-Disposition: ATTACHMENT; FILENAME=btstat.c I2luY2x1ZGUgPGJsdWV0b290aC5oPg0KI2luY2x1ZGUgPGVyci5oPg0KI2lu Y2x1ZGUgPHN0ZGlvLmg+DQojaW5jbHVkZSA8c3RkbGliLmg+DQojaW5jbHVk ZSA8dW5pc3RkLmg+DQoNCmNvbnN0IGNoYXIgKmRldiA9ICJ1YnQwIjsNCg0K aW50DQptYWluKGludCBhYywgY2hhciAqYXZbXSkNCnsNCglzdHJ1Y3QgYnRf ZGV2aW5mbyBkaTsNCgl1aW50MzJfdCBjLCByLCBzLCBkciwgZHM7DQoNCglp ZiAoYWMgPiAxKSB7DQoJCWRldiA9IGF2WzFdOw0KCQlhYy0tOw0KCQlhdisr Ow0KCX0NCg0KCWlmIChhYyA+IDEpIHsNCgkJZnByaW50ZihzdGRlcnIsICJ1 c2FnZTogJXMgW2RldmljZV0iLCBnZXRwcm9nbmFtZSgpKTsNCgkJZXhpdChF WElUX0ZBSUxVUkUpOw0KCX0NCg0KCWMgPSAwOw0KCXIgPSAwOw0KCXMgPSAw Ow0KDQoJZm9yICg7Oykgew0KCQlpZiAoYnRfZGV2aW5mbyhkZXYsICZkaSkg PT0gLTEpDQoJCQllcnIoRVhJVF9GQUlMVVJFLCAiJXMiLCBkZXYpOw0KDQoJ CWlmIChjKysgPT0gMCkgew0KCQkJciA9IGRpLmJ5dGVzX3JlY3Y7DQoJCQlz ID0gZGkuYnl0ZXNfc2VudDsNCgkJfQ0KDQoJCWRyID0gZGkuYnl0ZXNfcmVj diAtIHI7DQoJCXIgPSBkaS5ieXRlc19yZWN2Ow0KDQoJCWRzID0gZGkuYnl0 ZXNfc2VudCAtIHM7DQoJCXMgPSBkaS5ieXRlc19zZW50Ow0KDQoJCWZwcmlu dGYoc3Rkb3V0LCAiXHIldSByZWN2LCAldSBzZW50ICAgICIsIGRyLCBkcyk7 DQoNCgkJZmZsdXNoKHN0ZG91dCk7DQoJCXNsZWVwKDEpOw0KCX0NCg0KCWV4 aXQoRVhJVF9TVUNDRVNTKTsNCn0NCg== --0-272804268-1260732731=:793--
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