[mythtv-commits] Ticket #11252: Reduce DeviceReadBuffer thread wakeup
MythTV
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Wed Jan 2 21:12:16 UTC 2013
#11252: Reduce DeviceReadBuffer thread wakeup
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Reporter: Rune Petersen <rune@…> | Owner: danielk
Type: Patch - Feature | Status: accepted
Priority: minor | Milestone: unknown
Component: MythTV - General | Version: 0.26-fixes
Severity: medium | Resolution:
Keywords: | Ticket locked: 0
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Comment (by Daniel Thor Kristjansson <dkristjansson@…>):
In [changeset:6912383b2c0c59df12aa9c8af521200fbe4e585d/mythtv]:
{{{
#!CommitTicketReference repository="mythtv"
revision="6912383b2c0c59df12aa9c8af521200fbe4e585d"
Reduce # number DeviceReadBuffer::Read() calls.
Refs #11252.
This reduces the number of reads per second we make in the stream handlers
utilizing the DRB. It does this by waiting 20 ms for at least
dev_read_size
bytes rather than 500 ms for min_read bytes. The device reads are larger
than the minimum read so this actually results in waiting a bit longer
under normal conditions while returning more quickly when we're not
getting
data from the device. A win-win.
}}}
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Ticket URL: <http://code.mythtv.org/trac/ticket/11252#comment:2>
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