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  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:	Thu, 28 Aug 2008 18:56:43 +0200
From:	Andi Kleen <>
To:	Denys Fedoryshchenko <>
Cc:	Andi Kleen <>,
	Joe Malicki <>,
	David Miller <>,,,,,,
Subject: Re: loaded router, excessive getnstimeofday in oprofile

On Thu, Aug 28, 2008 at 07:48:52PM +0300, Denys Fedoryshchenko wrote:
> 1)Right now i have 400-500 Mbps passing router. If i will run 
> 5 "pings" ,simultaneous ,under _USER_ privileges(i know ping is suid), 
> instead of free 20% CPU time, i will have 1-2% free CPU time. Sure i know 
> ping is suid program, but it is has been "like this" since long time. By 
> security psychos it will be caled DoS.

The skb timestamp overhead does not add up, it's either on or off.
If multiple pings make the router slower it must be something else.

To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists