Re: How NSA access was built into Windows

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sun, 2007-01-21 at 17:11 -0500, Gene Heskett wrote:
> On Sunday 21 January 2007 14:36, Lyvim Xaphir wrote:
> >On Sun, 2007-01-21 at 01:14 -0500, R. G. Newbury wrote:
> >> David Boles wrote:
> [and I snipped, we have enough trolls under this bridge already]
> 
> Also, to add a bit of fuel to the fire, I just rebuilt my 2.6.20-rc4 again 
> after having found some more selinux stuff in the previous build that I 
> am now running without.
> 
> 1: Now my logs are clean again.
> 
> 2: It took me 27 minutes to build that selinux free kernel.  Now check 
> this, after having added quite a few usb network related modules as I'm 
> trying to get into a wap11 via the usb port, which will allow me to do a 
> reset to factory, something I cannot do from the snmp interface because 
> that interface requires the old password, something I've forgotten in the 
> 8 months since I last used this device.
> 
> #> time ./makeit
> [snip about 200k of make output]
> All done! Edit grub.conf, reboot and chose your kernel at the grub prompt
> 
> real    8m42.183s
> user    4m21.606s
> sys     1m11.805s
> [root@coyote linux-2.6.20-rc4]#                 
> 
> Now, I could have done something to speed this system up that's not 
> related to selinux, but the only things I've done is to rip out the livna 
> versions of mplayer and mplayerplugin with --nodeps, and put them back in 
> from dries before they were missed, and then restart firefox from its own 
> file menu pulldown, (normal quits and re-runs didn't seem to do it) and 
> now both foxnews and cnn video's now play, although cnn's videos act like 
> the server is in need of quite a bit more iron in its diet.
> 
> Now, somebody, preferably Dr. Smalley, please explain to me why I should 
> run something that takes a 9 minute compile and makes it take 27 minutes 
> to do it.  And the rest of the system just plain feels snappier.

(1) I'm not a PhD.
(2) If SELinux tripled your kernel compile time, then something is
terribly wrong with it.  I've never seen that kind of overhead in kernel
compile benchmarks, not even close.  More like a few percent.  Please
verify that you are using comparable baselines (e.g. same kernel other
than selinux options in .config) and tests (are you sure your second
build was from a clean state, and was there any other system activity
ongoing during either build?).  Can you reproduce the result reliably?
Were any audit/avc messages generated during either build,
to /var/log/messages or /var/log/audit/audit.log (if running auditd)?

-- 
Stephen Smalley
National Security Agency

[Index of Archives]     [Older Fedora Users]     [Fedora Announce]     [Fedora Package Announce]     [EPEL Announce]     [Fedora Magazine]     [Fedora News]     [Fedora Summer Coding]     [Fedora Laptop]     [Fedora Cloud]     [Fedora Advisory Board]     [Fedora Education]     [Fedora Security]     [Fedora Scitech]     [Fedora Robotics]     [Fedora Maintainers]     [Fedora Infrastructure]     [Fedora Websites]     [Anaconda Devel]     [Fedora Devel Java]     [Fedora Legacy]     [Fedora Desktop]     [Fedora Fonts]     [ATA RAID]     [Fedora Marketing]     [Fedora Management Tools]     [Fedora Mentors]     [SSH]     [Fedora Package Review]     [Fedora R Devel]     [Fedora PHP Devel]     [Kickstart]     [Fedora Music]     [Fedora Packaging]     [Centos]     [Fedora SELinux]     [Fedora Legal]     [Fedora Kernel]     [Fedora OCaml]     [Coolkey]     [Virtualization Tools]     [ET Management Tools]     [Yum Users]     [Tux]     [Yosemite News]     [Gnome Users]     [KDE Users]     [Fedora Art]     [Fedora Docs]     [Asterisk PBX]     [Fedora Sparc]     [Fedora Universal Network Connector]     [Libvirt Users]     [Fedora ARM]

  Powered by Linux