Aiza wrote:
David Jackson wrote:
David Jackson wrote:
David Jackson wrote:
I am currently using FreeBSD 8.0. I have been, for a long time,
been having problems with lockups of FreeBSD 8.0 when using USB
hard disks. Sometimes certain applications lock up for several
minutes, when they use the disk, file operations are very slow, and
sometimes the entire operating system can lock up for several
minutes. This can be a pretty painful thing and makes the system
seem very unstable. I am using UFS filesystems on the disks. It
seems to happen on multiple disks that i use.
I was hopeful changes to the FreeBSD USB drivers might have
improved things but they are as bad as ever.
Help is appreciated.
Are there perhaps diagnostic tools or an error log that can be
enabled so I can see if maybe there is some sort of error occuring
with the USB transmissions that might be causing this problem, or
perhaps what part of the driver code it is getting locked up on?.
Has anyone else experienced problems such as this with USB disks? If
more information on my hardware is needed i will post dmesg output.
Any help is appreciated.
I have done some more thinking about this issue. Just an app freeze
on USB access is one thing, however, the fact that the entire OS
freezes up on access to the USB disk shows there are much more
serious problems in the FreeBSD kernel. A USB access should not cause
the kernel to lock up for minutes. these are very serious flaws in
the FreeBSD kernel and lead to an instable and unuseable system. ....
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Your description about what is happening is lacking any detail.
Tell us what is on the USB disk, How you are using it, How you created
it ECT ECT ECT Booting your system from it is way different than
writing small data files to it or containing a raid file system or
some database. You have to help us help you.
The USB disk is being used with 2 UFS filesystems on it. Due to the bad
performance, it takes a long time to copy data to the disk. It seems as
though there is a complete lock up periodically when doing a very large
copy. The system becomes very unstable. Conditions worsen when two or
three apps are using the disk at once, it seems. Often the entire OS can
lock up for minutes when the disk is being used. I once tried to copy a
200 mb directory, it took 7 hours. Perhaps the developers of the USB
system would like discuss this, so we can figure out what is going on. I
do not know enough about it as to say exactly where the problem is.
Has anyone else been having these problems?
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