Re: [PATCH] allow dctcp alpha to drop to zero

2015-10-23 Thread David Miller
From: Andrew Shewmaker Date: Sun, 18 Oct 2015 21:59:08 -0700 > If alpha is strictly reduced by alpha >> dctcp_shift_g and if alpha is less > than 1 << dctcp_shift_g, then alpha may never reach zero. For example, > given shift_g=4 and alpha=15, alpha >> dctcp_shift_g yields 0 and alpha > remains 1

Re: [PATCH] allow dctcp alpha to drop to zero

2015-10-20 Thread Andrew Shewmaker
On Mon, Oct 19, 2015 at 8:01 AM, Florian Westphal wrote: > Andrew Shewmaker wrote: >> If alpha is strictly reduced by alpha >> dctcp_shift_g and if alpha is less >> than 1 << dctcp_shift_g, then alpha may never reach zero. For example, >> given shift_g=4 and alpha=15, alpha >> dctcp_shift_g yield

Re: [PATCH] allow dctcp alpha to drop to zero

2015-10-19 Thread Florian Westphal
Andrew Shewmaker wrote: > If alpha is strictly reduced by alpha >> dctcp_shift_g and if alpha is less > than 1 << dctcp_shift_g, then alpha may never reach zero. For example, > given shift_g=4 and alpha=15, alpha >> dctcp_shift_g yields 0 and alpha > remains 15. The effect isn't noticeable in this

[PATCH] allow dctcp alpha to drop to zero

2015-10-18 Thread Andrew Shewmaker
If alpha is strictly reduced by alpha >> dctcp_shift_g and if alpha is less than 1 << dctcp_shift_g, then alpha may never reach zero. For example, given shift_g=4 and alpha=15, alpha >> dctcp_shift_g yields 0 and alpha remains 15. The effect isn't noticeable in this case below cwnd=137, but could g