netdev - Re: [PATCH] iptables: lock free counters

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

Date:	Mon, 2 Mar 2009 14:17:30 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	Stephen Hemminger <shemminger@...tta.com>,
	Eric Dumazet <dada1@...mosbay.com>,
	David Miller <davem@...emloft.net>,
	Rick Jones <rick.jones2@...com>, netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org
Subject: Re: [PATCH] iptables: lock free counters

On Mon, Mar 02, 2009 at 11:07:18PM +0100, Patrick McHardy wrote:
> Stephen Hemminger wrote:
>> On Mon, 02 Mar 2009 22:56:39 +0100
>> Patrick McHardy <kaber@...sh.net> wrote:
>>> Eric Dumazet wrote:
>>>> Patrick McHardy a écrit :
>>>>> Eric Dumazet wrote:
>>>>>> real    0m1.810s
>>>>>> user    0m0.000s
>>>>>> sys     0m0.001s
>>>>> Thats really slow ...
>>>>>
>>>>>> CONFIG_NO_HZ=y
>>>>>> CONFIG_HZ_1000=y
>>>>>> CONFIG_HZ=1000
>>>>>>
>>>>>> One cpu is 100% handling softirqs, could it be the problem ?
>>>>> Is this fixed by your RCU quiescent state fix?
>>>> Yes it is :)
>>> Great, thanks :)
>> I wonder if the RCU quiescent fix should go in 2.6.29 because it
>> fixes other issues like route changing RCU latency under Dos attack.
>
> From what I can tell, it should.

I agree.

							Thanx, Paul
--
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