Hendrik van den Boogaard wrote: > @Jamie: > On my 7200.11 1 TB drives (also one of the first 1 TBs on the > market) I also disabled NCQ because I found some thread that it > might kill the contents of the file system. If you want I can lookup > where I found that.
I'm guessing it's barriers not being implemented or enabled properly in the kernel? (See ext3 "barrier=1" off by default, controversial threads about it..) Even if the filesystem does barriers, Linux software RAID does not. If it's not that, I'm interested in why NCQ should be disabled. In principle, if used right, it should always be an improvement or about the same, and it would be quite bad firmware to fail at that. > This machine however has a SATA disk and I never experienced any > sluggishness on this machine, so far running Hardy and Intrepid. So the > sluggishness may even be drive specific? It might. There are tools, such as blktrace, which can help diagnose if it's the drive if you know how to read the output. It is quite outside what I have time for though :-) -- Jamie -- Heavy Disk I/O harms desktop responsiveness https://bugs.launchpad.net/bugs/131094 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
