Not sure about HPUX but most linux distros are configured to use as much memory as possible , if not on processes then the system will any spare for caching disk io. So the absence of free memeory and a system on the go slow may not be an indicator of a problem with uv using too much memory, it may be a disk io bottleneck somewhere.
-----Original Message----- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of u2ug Sent: 08 June 2010 16:31 To: U2 Users List Subject: [U2] UV Memory issues We started running into a situation recently where a box running universe 10.2.11 on hpux 11.31 started to have severe performance problems, zero response, processes that normally take seconds to run taking hours etc. In Top we could see that the reported free memory was averaging about 28M at times dropping to less than 5M and that the vhand process was chewing up a most of the cpu. With the free memory that low, vhand hogging the system makes sense. Why the memory is that low is the question. The machine has 4G of memory, right after reboot before anyone but me gets on the system top shows us at 3G free. If we just let the system sit, free memory will sit happily at 3G. As soon as we start using universe, the free memory starts to fall. Logging out all universe processes and even bringing universe down has no effect on free memory - I would have expected the memory to be freed up once the universe processes and in particular universe itself was terminated but that's not what we are seeing. We were in the process of setting up a new box physically the same as the old box but running uv 10.3.6 on hpux 11.3.1. So I am looking at this problem now on that box in isolation. We were hoping that this would turn out to be a hardware issue but we are seeing the same problem on this new box as well. This is out of my realm of experience and I am stumped as to where to go next. I have the system guy checking with hp , my guess is they are going to point the finger at uv. I am going to check with our var - I'm not overly optimistic there either. Any suggestions ? - Hpux/uv tunables we should be looking at - can we tell universe to restrict the amount of physical memory that it uses ? - Or maybe this is a garbage collection issue ? - universe or hpux being overly aggressive about caching - any hpux utilities that we can use to see exactly where the memory is being used ? - .... ? Gerry -----Original Message----- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Martin Scholl Sent: June 8, 2010 09:41 AM To: 'U2 Users List' Subject: [U2] [Unidata-Windows] Can login, but not execute any command Upfront: The problem was solved by re-installing UniData My client had UniData 7.2.3 on Windows within his domain. He rebooted all servers within his company over the weekend. Yesterday UniData suddenly didn't work anymore. I could log in to the database, but any command, whether Write, Select or catalogued subroutine would stop dead in its track. There was no error message, no indication what could have gone wrong. UniObjects had no time-out, the application hung for hours. I telneted into the database and many users got the unknown user error, I just found one user that allowed me to log in. I ran a few commands and that worked. My hunch is that a Windows update changed NT-Authentication and UniData didn't like it. Poking through the logs, I see in the Windows security log two entries for every UniData login, one success and one failure: The first a success audit: A trusted logon process has registered with the Local Security Authority. This logon process will be trusted to submit logon requests. Logon Process Name: \udapi_server.exe Then a failure audit: The logon to account: HHC-Unidata by: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0 from workstation: HORIZONSERV4 failed. The error code was: 3221225572 The error code means: 32212255720 The specified user does not exist. This behavior started already last year, and even now that everything works again. Does anyone have ideas or similar experiences? Martin Scholl 18910 New Hampshire Ave Brinklow, MD 20862 Phone: 301-924-5537 Cell: 301-613-9572 martin.sch...@hipaasuite.com www.HIPAAsuite.com _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users _______________________________________________ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
