netdev - Re: [PATCH net] net_sched: gen_estimator: extend pps limit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20150708.135956.157230596810615593.davem@davemloft.net>
Date:	Wed, 08 Jul 2015 13:59:56 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org, ast@...mgrid.com, jhs@...atatu.com,
	john.fastabend@...il.com
Subject: Re: [PATCH net] net_sched: gen_estimator: extend pps limit

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 02 Jul 2015 15:57:19 +0200

> From: Eric Dumazet <edumazet@...gle.com>
> 
> rate estimators are limited to 4 Mpps, which was fine years ago, but
> too small with current hardware generation.
> 
> Lets use 2^5 scaling instead of 2^10 to get 128 Mpps new limit.
> 
> On 64bit arch, use an "unsigned long" for temp storage and remove limit.
> (We do not expect 32bit arches to be able to reach this point)
> 
> Tested:
> 
> tc -s -d filter sh dev eth0 parent ffff:
> 
> filter protocol ip pref 1 u32 
> filter protocol ip pref 1 u32 fh 800: ht divisor 1 
> filter protocol ip pref 1 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:15 
>   match 07000000/ff000000 at 12
> 	action order 1: gact action drop
> 	 random type none pass val 0
> 	 index 1 ref 1 bind 1 installed 166 sec
>  	Action statistics:
> 	Sent 39734251496 bytes 863788076 pkt (dropped 863788117, overlimits 0 requeues 0) 
> 	rate 4067Mbit 11053596pps backlog 0b 0p requeues 0 
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied, thanks.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html