https://github.com/torvalds/linux
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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codel: refine one condition to avoid a nul rec_inv_sqrt
File | Mode | Size |
---|---|---|
Kconfig | -rw-r--r-- | 51.4 KB |
Makefile | -rw-r--r-- | 1.1 KB |
calibrate.c | -rw-r--r-- | 8.3 KB |
do_mounts.c | -rw-r--r-- | 12.8 KB |
do_mounts.h | -rw-r--r-- | 1.4 KB |
do_mounts_initrd.c | -rw-r--r-- | 3.4 KB |
do_mounts_md.c | -rw-r--r-- | 8.2 KB |
do_mounts_rd.c | -rw-r--r-- | 8.4 KB |
init_task.c | -rw-r--r-- | 668 bytes |
initramfs.c | -rw-r--r-- | 12.9 KB |
main.c | -rw-r--r-- | 21.5 KB |
noinitramfs.c | -rw-r--r-- | 1.5 KB |
version.c | -rw-r--r-- | 1.1 KB |
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Computing file changes ...