On 07/02/2014 12:49 AM, George R Goffe issued this missive:
Hi, I have a Fedora 19 system with several large 2-4TB drives attached via USB-SATA docking stations. I'm seeing a problem whereby a specific filesystem that hasn't been accessed for some time and is REALLY slow to respond to initial requests. ls -alt for example takes a substantial bit of time to respond at first but then response is acceptable after that. I'm trying to figure out what's happening and why and what I can do about it. It's like the buffers are empty and they need to be filled. Are there kernel tunable parameters that can be changed to avoid this problem?
I can think of two things: 1) The drive was spun down because of inactivity. Try looking at the man page for "hdparm", specifically the "-B" and "-S" options. 2) Caching. If the filesystem hadn't been accessed in a while, its contents are probably no longer cached. Don't know if you can do anything about that. ---------------------------------------------------------------------- - Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx - - AIM/Skype: therps2 ICQ: 22643734 Yahoo: origrps2 - - - - Careful! Ugly strikes 9 out of 10 people! - ---------------------------------------------------------------------- -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
