On Mon, Aug 12, 2013 at 05:19:54PM +0000, tudorb at gmail dot com wrote: > --- Comment #28 from Tudor Bosman <tudorb at gmail dot com> --- > FYI, this bug has bitten me in a different way: memcpy() copying backwards > defeats the MADV_SEQUENTIAL flag to madvise(). A trivial file copier > implementation (mmap source, mmap destination, set MADV_SEQUENTIAL, memcpy > from > source to destination) would perform much worse on machines that support SSSE3 > than on machines that don't because of this bug. > Wait, do you have overlapping source and destination areas? If so then a backward copy is necessary.
Or is backward copy called for not overlapping areas? I have a patch that could call backward copy only if src-n < dest < src+n holds. > (Before anyone tells me that I should copy files using read() and write(), my > actual usage pattern was more complex, but the details are irrelevant.) > > -- > You are receiving this mail because: > You are on the CC list for the bug. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to flashplugin-nonfree in Ubuntu. https://bugs.launchpad.net/bugs/727064 Title: [Natty] Strange beeping sound when viewing flash video Status in The GNU C Library: Fix Released Status in “adobe-flashplugin” package in Ubuntu: Confirmed Status in “eglibc” package in Ubuntu: Fix Released Status in “flashplugin-nonfree” package in Ubuntu: Confirmed Status in “glibc” package in Fedora: Unknown Bug description: Binary package hint: adobe-flashplugin As describe in the thread http://ubuntuforums.org/showthread.php?t=1692707 the sound is bad in natty. Workaround: patch the flash plugin to change memcpy call to memmove - Download https://bugzilla.redhat.com/attachment.cgi?id=460254 - Run this script: $ sudo bash ./fix-flash.sh /usr/lib/flashplugin-installer/libflashplayer.so - Restart the browser To manage notifications about this bug go to: https://bugs.launchpad.net/glibc/+bug/727064/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
