On Friday, August 15, 2003, at 02:50 PM, Rob Gould wrote:
I'm trying to get my Revolution application to FTP files up to our Mac OS X server.� This works most of the time, but if the server isn't used for awhile, it gets into this mode where you have to kind of "wake it up" - - - apps on the server sit for awhile before launching, the server doesn't serve for awhile, etc.� This doesn't seem like normal behavior to me, and I was wondering if anyone else has experienced this before with an OS X server and might know what setting needs to be adjusted.� It's got all the software updates for both the OS and the server software.
If it's a general behavior for the server, not just the FTP daemon, then I would suspect memory or energy saver problems.
If the server is low on memory and processes are getting swapped swapped out (to virtual memory on disk). Then when requests are made, it takes a moment to read the processes back in from swap. Run Process Viewer, top, vmstat to see how much free memory is on the server.
Also check energy saver and disk sleep settings. Those should be turned off for a server. I think OS X has those off by default- not sure.
If the problem is specific to ftpd, then I would look at 1) Is the daemon being started by inetd (slower), or is it a long running process 2) is the daemon doing DNS lookups on clients (for example this can be a performance hit for httpd, but I don't know about ftpd)
Alex Rice, Software Developer Architectural Research Consultants, Inc. http://ARCplanning.com
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