Re: Sluggish scheduling during a long disk copy

2008-11-10 Thread Szabolcs Szakacsits
Kris Kennaway kris at FreeBSD.org writes: Sounds like it to me. ntfs-3g uses FUSE, which is a userland filesystem framework. By design it will have poor I/O performance since every I/O transfer will require multiple trips into and out of the kernel. Performance doesn't work like that for

Re: Sluggish scheduling during a long disk copy

2008-11-09 Thread matt donovan
On Sun, Nov 9, 2008 at 3:32 PM, Dan [EMAIL PROTECTED]wrote: Odhiambo Washington([EMAIL PROTECTED])@2008.11.09 23:25:19 +0300: On Sun, Nov 9, 2008 at 11:21 PM, Dan [EMAIL PROTECTED]wrote: Hello. I am copying one 150G disk to a 3ware mirror, and the machine becomes downright unusable.

Re: Sluggish scheduling during a long disk copy

2008-11-09 Thread Kris Kennaway
matt donovan wrote: On Sun, Nov 9, 2008 at 3:32 PM, Dan [EMAIL PROTECTED]wrote: Odhiambo Washington([EMAIL PROTECTED])@2008.11.09 23:25:19 +0300: On Sun, Nov 9, 2008 at 11:21 PM, Dan [EMAIL PROTECTED]wrote: Hello. I am copying one 150G disk to a 3ware mirror, and the machine becomes

Sluggish scheduling during a long disk copy

2008-11-09 Thread Dan
Hello. I am copying one 150G disk to a 3ware mirror, and the machine becomes downright unusable. It takes seconds to switch between 'konsole' windows and it takes seconds between I type a command (ssh session to a remote box, which I know is fast and unloaded) and see it executed. This is

Re: Sluggish scheduling during a long disk copy

2008-11-09 Thread Bruce Cran
On Sun, 09 Nov 2008 14:12:34 -0800 Kris Kennaway [EMAIL PROTECTED] wrote: Dan wrote: Kris Kennaway([EMAIL PROTECTED])@2008.11.09 12:57:16 -0800: could be an issue with ntfs-3g driver Sounds like it to me. ntfs-3g uses FUSE, which is a userland filesystem framework. By design it will

Re: Sluggish scheduling during a long disk copy

2008-11-09 Thread Odhiambo Washington
On Sun, Nov 9, 2008 at 11:21 PM, Dan [EMAIL PROTECTED]wrote: Hello. I am copying one 150G disk to a 3ware mirror, and the machine becomes downright unusable. It takes seconds to switch between 'konsole' windows and it takes seconds between I type a command (ssh session to a remote box, which

Re: Sluggish scheduling during a long disk copy

2008-11-09 Thread Kris Kennaway
Dan wrote: Kris Kennaway([EMAIL PROTECTED])@2008.11.09 12:57:16 -0800: could be an issue with ntfs-3g driver Sounds like it to me. ntfs-3g uses FUSE, which is a userland filesystem framework. By design it will have poor I/O performance since every I/O transfer will require multiple trips

Re: Sluggish scheduling during a long disk copy

2008-11-09 Thread Dan
Kris Kennaway([EMAIL PROTECTED])@2008.11.09 12:57:16 -0800: could be an issue with ntfs-3g driver Sounds like it to me. ntfs-3g uses FUSE, which is a userland filesystem framework. By design it will have poor I/O performance since every I/O transfer will require multiple trips into and

Re: Sluggish scheduling during a long disk copy

2008-11-09 Thread Dan
Odhiambo Washington([EMAIL PROTECTED])@2008.11.09 23:25:19 +0300: On Sun, Nov 9, 2008 at 11:21 PM, Dan [EMAIL PROTECTED]wrote: Hello. I am copying one 150G disk to a 3ware mirror, and the machine becomes downright unusable. It takes seconds to switch between 'konsole' windows and it takes

Re: Sluggish scheduling during a long disk copy

2008-11-09 Thread Dan
Odhiambo Washington([EMAIL PROTECTED])@2008.11.09 23:25:19 +0300: On Sun, Nov 9, 2008 at 11:21 PM, Dan [EMAIL PROTECTED]wrote: Hello. I am copying one 150G disk to a 3ware mirror, and the machine becomes downright unusable. It takes seconds to switch between 'konsole' windows and it takes

Re: Sluggish scheduling during a long disk copy

2008-11-09 Thread Dan
Bruce Cran([EMAIL PROTECTED])@2008.11.09 14:40:04 -0800: It may be that FUSE is aggressively caching data and pushing your applications out of memory. This commonly happens on Linux and may be happening here too. Fuse is good. Tried without fuse, using the native ntfs mount. Still the same