Re: [gentoo-user] Horrible TrueCrypt performance
On Tue, Mar 06, 2012 at 03:41:01PM +0100, Alex Schuster wrote: > Whoops! I for got to write an update. Two months ago, I wrote: > > > I have to copy some 100 G of files from one to another USB drive. Both > > are formatted with NTFS, the destination drive already has a truecrypt > > container file where I need to store the data into. > [...] > > The problem was the TrueCrypt container file. What I did instead was to > format the whole drive as a TruCrypt volume, which took about two hours I > think. When I mounted the partition, copying speed was as fast as it > should be. Yes, it is also my experience that write performance on NTFS is very suboptimal for bigger files. -- Gruß | Greetings | Qapla' I forbid any use of my email addresses with Facebook services. ATARI! We make top-notch toasters affordable! pgpPjvRTaH1jE.pgp Description: PGP signature
Re: [gentoo-user] Horrible TrueCrypt performance
Whoops! I for got to write an update. Two months ago, I wrote: > I have to copy some 100 G of files from one to another USB drive. Both > are formatted with NTFS, the destination drive already has a truecrypt > container file where I need to store the data into. > > This is sort of working, but the speed is waa too slow. After about > four hours, only 8 G were copied. [...] The problem was the TrueCrypt container file. What I did instead was to format the whole drive as a TruCrypt volume, which took about two hours I think. When I mounted the partition, copying speed was as fast as it should be. Wonko
[gentoo-user] Horrible TrueCrypt performance
Hi there! I have to copy some 100 G of files from one to another USB drive. Both are formatted with NTFS, the destination drive already has a truecrypt container file where I need to store the data into. This is sort of working, but the speed is waa too slow. After about four hours, only 8 G were copied. Looking at the cp -r output shows I see a bunch of files being processed, then the output stops for some minutes. Sometimes for half an hour. Top shows the mount.ntfs-3g process writing to the destination using all resources of one of my two cores. iotop -d 10 shows this process mainly. What I find strange is that this process is also reading from the drive I am copying to, 1600 K/s compared to 260 K/s writing speed. Huh?? And sometimes there is no I/O from this process during the ten seconds of sampling time. I sampled for about half an hour, and iotop -oa shows that only 20 MB were written. This will never finish. I used this command to mount the truecrypt container: truecrypt --fs-options=uid=1000,umask=0007 -k /home/wonko/my.key /media/My USB Drive/my_container /mnt Adding 'async' to the fs-options did not help. Any ideas? I've never used TrueCrypt before. Wonko
