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Add way to control packet capture buffer size and optimize snaplen

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Added `—input-raw-buffer-size` - Controls size of the OS buffer (in
bytes) which holds packets until they dispatched. Default value depends
by system: in Linux around 2MB. If you see big package drop, increase
this value.

Additionally snaplen (max number of bytes being read for each packet)
now dynamically set based on interface MTU + max header size. In most
situations it should reduce package drop, because each packet will
consume less space in buffer.
This commit is contained in:
Leonid Bugaev
2018-05-27 12:31:47 +03:00
parent 18610d3555
commit c5d1112e7a
13 changed files with 59 additions and 40 deletions
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plugins.go
+1 -1
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@@ -106,7 +106,7 @@ func InitPlugins() {
}
for _, options := range Settings.inputRAW {
registerPlugin(NewRAWInput, options, engine, Settings.inputRAWTrackResponse, Settings.inputRAWExpire, Settings.inputRAWRealIPHeader, Settings.inputRAWBpfFilter, Settings.inputRAWTimestampType)
registerPlugin(NewRAWInput, options, engine, Settings.inputRAWTrackResponse, Settings.inputRAWExpire, Settings.inputRAWRealIPHeader, Settings.inputRAWBpfFilter, Settings.inputRAWTimestampType, Settings.inputRawBufferSize)
}
for _, options := range Settings.inputTCP {