[haiku-bugs] Re: [Haiku] #9078: FreeBSD network drivers using legacy interrupt wrappers are extremely slow
- From: "tqh" <trac@xxxxxxxxxxxx>
- Date: Mon, 22 Oct 2012 15:51:59 -0000
#9078: FreeBSD network drivers using legacy interrupt wrappers are extremely
slow
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Reporter: kallisti5 | Owner: axeld
Type: bug | Status: new
Priority: normal | Milestone: R1/alpha4
Component: Network & Internet/Stack | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking: 8295
Has a Patch: 0 | Platform: All
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Comment (by tqh):
Ah then it gets harder, perhaps check how interrupts are
acknowledged/disabled by different drivers.
'''It would be really good if people with slow network cards report what
card they have. '''
It could be it is just a problem with i4965 and marvell yukon. Given that
yukon does not use wlan code at all, it might be easier to try and see
what's the problem there first. I don't have a marvell yukon so I can't do
much.
I do have a i4965 and it tops out at 100KB/s under Haiku, while on Linux
it is at least >20 times faster. Pinging the router goes from <2ms to 1s
if you start a download, but returns to <2ms if you stop the download.
i4965 uses a lot of locking and do heavy handling in the int handler so I
suspect lock contention. I think there is something to be learned by how
FreeBSD does (MSI?) int handling, havn't got the time to look into it yet.
Btw have you checked that it is using the 8139 driver? IIRC some
generations are more like 8169. You might also want to compare cpu usage.
--
Ticket URL: <http://dev.haiku-os.org/ticket/9078#comment:4>
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