https://github.com/torvalds/linux
Revision 2359a47671fc4fb0fe5e9945f76c2cb10792c0f8 authored by Eric Dumazet on 29 July 2012, 20:52:21 UTC, committed by David S. Miller on 10 August 2012, 23:52:54 UTC
One condition before codel_Newton_step() was not good if we never left the dropping state for a flow. As a result rec_inv_sqrt was 0, instead of the ~0 initial value. codel control law was then set to a very aggressive mode, dropping many packets before reaching 'target' and recovering from this problem. To keep codel_vars_init() as efficient as possible, refine the condition to make sure rec_inv_sqrt initial value is correct Many thanks to Anton Mich for discovering the issue and suggesting a fix. Reported-by: Anton Mich <lp2s1h@gmail.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Tip revision: 2359a47671fc4fb0fe5e9945f76c2cb10792c0f8 authored by Eric Dumazet on 29 July 2012, 20:52:21 UTC
codel: refine one condition to avoid a nul rec_inv_sqrt
codel: refine one condition to avoid a nul rec_inv_sqrt
Tip revision: 2359a47
| File | Mode | Size |
|---|---|---|
| acpi | ||
| asm-generic | ||
| crypto | ||
| drm | ||
| keys | ||
| linux | ||
| math-emu | ||
| media | ||
| memory | ||
| misc | ||
| mtd | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| rxrpc | ||
| scsi | ||
| sound | ||
| target | ||
| trace | ||
| video | ||
| xen | ||
| Kbuild | -rw-r--r-- | 253 bytes |
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