Bad transmission rate on second slave-client.
Hello,
in resolving the issue of two dongles I just posted a solution for, something else came up on transmission rate. I have this NAP-station running Bluez-utils 3.7 using Debian Etch and full Dbus-support. Emulating future embedded systems I am using two laptops
A: running Debian Sarge, Broadcom 2045 dongle
B: running Debian Etch, CSR dongle
and both are using a privately built Bluez-utils 2.25, where my only changes are to switch of dbus, bluepin, and bcm203x. The embedded systems cannot afford the space demands of dbus, hence it is switched of. Observe, these clients are internally operation without dbus, the server/master makes full use of dbus.
The remarkable thing is that, at first laptop A ran a full speed bluetooth connection for several days, but laptop B had minimal speed with heavily fractured packets, and in addition forced itself to be a master aginst the server configuration. When this upset master-slave relation was remedied, laptop B achieved full speed. But to my dismay laptop A has now deteroriated to fractional transmission and terrible 7-8kbyte rates. In spite, of repeatedly halting laptop as well as server, and erasing /var/lib/bluetooth/* on both machines, I am presently stuck with this disfunction. At present it did not even help to let the two laptops establish connections to different dongles on the server, now that I managed to resolve that issue.
Comments? Suggestions? I am almost at loss here!
Best regards, Mats E A
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Marcel Holtmann
maintainerHi Mats,
Quoted 17 lines
in resolving the issue of two dongles I just posted a solution for, something else came up on transmission rate. I have this NAP-station running Bluez-utils 3.7 using Debian Etch and full Dbus-support. Emulating future embedded systems I am using two laptops
A: running Debian Sarge, Broadcom 2045 dongle
B: running Debian Etch, CSR dongle
and both are using a privately built Bluez-utils 2.25, where my only changes are to switch of dbus, bluepin, and bcm203x. The embedded systems cannot afford the space demands of dbus, hence it is switched of. Observe, these clients are internally operation without dbus, the server/master makes full use of dbus.
Quoted 13 lines
The remarkable thing is that, at first laptop A ran a full speed bluetooth connection for several days, but laptop B had minimal speed with heavily fractured packets, and in addition forced itself to be a master aginst the server configuration. When this upset master-slave relation was remedied, laptop B achieved full speed. But to my dismay laptop A has now deteroriated to fractional transmission and terrible 7-8kbyte rates. In spite, of repeatedly halting laptop as well as server, and erasing
/var/lib/bluetooth/*on both machines, I am presently stuck with this disfunction. At present it did not even help to let the two laptops establish connections to different dongles on the server, now that I managed to resolve that issue.
no idea what you are actually trying. Check your settings and make sure you use dongles that are known to work correctly.
Regards
Marcel
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tor 2007-07-05 klockan 10:07 +0200 skrev Marcel Holtmann:
Quoted 5 lines
Hi Mats,
no idea what you are actually trying. Check your settings and make sure you use dongles that are known to work correctly.
Alarm called off. I could later that first evening verify that the dongle hat stopped working reliably. It could be questioned or reset by hciconfig. Sorry for the message noice!
Regards Mats E A
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