Re: Performance problem immediately fixed by disabling HDR

"Fernando Nunes" <spam@domus.online.pt> wrote in message news:f9atdb$7ev$2@aioe.org... > Neil Truby wrote: >> IDS 10.0FC5 on AIX 5.3 >> >> We have a highly sporadic performance problem. Sporedically - hasn;t >> happened for a couple of months but has started today - our database >> server starts exhibiting 2 sec checkpoints (otherwise they are almost >> always 0s) and the performance of critical processes dives. >> >> 14:01:19 Checkpoint Completed: duration was 2 seconds. >> 14:16:21 Checkpoint Completed: duration was 2 seconds. >> 14:31:24 Checkpoint Completed: duration was 2 seconds. >> 14:46:26 Checkpoint Completed: duration was 2 seconds. >> 15:01:28 Checkpoint Completed: duration was 2 seconds. >> 15:16:31 Checkpoint Completed: duration was 2 seconds. >> 15:31:33 Checkpoint Completed: duration was 2 seconds. >> 15:46:35 Checkpoint Completed: duration was 2 seconds. >> 16:01:37 Checkpoint Completed: duration was 2 seconds. >> 16:16:40 Checkpoint Completed: duration was 2 seconds. >> 16:31:42 Checkpoint Completed: duration was 2 seconds.>> >> <== HDR turned off at 1642 >> 16:46:43 Checkpoint Completed: duration was 0 seconds. >> 17:01:42 Checkpoint Completed: duration was 0 seconds. >> 17:16:43 Checkpoint Completed: duration was 0 seconds. >> 17:31:43 Checkpoint Completed: duration was 0 seconds. >> 17:46:44 Checkpoint Completed: duration was 0 seconds.>> >> >> As before, turning HDR off immediately clears the problem. There are no >> obvious performance problems on either PRI or SEC server. It's all a >> mystery. The common thread is that shutting off HDR fixes it instantly. >> >> Any observations? >> >> thx > > Try pinging between servers to check for any TCP/NET issues.. > Regards We've had it again this evening. Before disabling HDR- which again instantly cured the problem - I pinged from Pri->Sec - 0ms constantly. I also did onstat -a and onstat -g all on both servers before disabling if anyone's interested ......

Neil Truby wrote: > > We've had it again this evening. Before disabling HDR- which again > instantly cured the problem - I pinged from Pri->Sec - 0ms constantly. > > I also did onstat -a and onstat -g all on both servers before disabling if > anyone's interested ...... > > Neil, Open a case on this and attach the onstats to the case. Thx M.P.

"Madison Pruet" <mpruet1@verizon.net> wrote in message news:46BA2A8F.70405@verizon.net... > Neil Truby wrote: > >> >> We've had it again this evening. Before disabling HDR- which again >> instantly cured the problem - I pinged from Pri->Sec - 0ms constantly. >> >> I also did onstat -a and onstat -g all on both servers before disabling >> if anyone's interested ...... > > Neil, > > Open a case on this and attach the onstats to the case. Hi Madison Thanks There is a case, 33150,019,866. However, other than by emailing it to UK support, who have gone home, I can't get the stats attached to it I don't think.