Greetings,
We have recently configured IHS on Domino 9.0.1 in order to support SHA-2 SSL certificates. It all worked fine in our testing however in production when the loads are high the web response seem to hang and we have to restart http task on Domino.
The IHS is installed on the same machine as that of Domino and we followed all the instructions here including the registry entries:
http://www-01.ibm.com/support/docview.wss?uid=swg21612316
Initially I thought it could be because there is not enough threads for the request so I increased the number of worker threads on domino to 250 which makes it to 750 on IHS. I have also recently figured out how to enable mpmstats module. Here is the pattern before the last hang. It seem that bay 253 is unusual. Any ideas what could be the problem?
[Wed Jul 09 09:50:44 2014] [notice] mpmstats: rdy 692 bsy 58 rd 3 wr 0 ka 55 log 0 dns 0 cls 0
[Wed Jul 09 09:51:45 2014] [notice] mpmstats: rdy 713 bsy 37 rd 2 wr 2 ka 32 log 0 dns 0 cls 1
[Wed Jul 09 09:52:46 2014] [notice] mpmstats: rdy 705 bsy 45 rd 2 wr 0 ka 43 log 0 dns 0 cls 0
[Wed Jul 09 09:53:47 2014] [notice] mpmstats: rdy 698 bsy 52 rd 0 wr 50 ka 1 log 0 dns 0 cls 1
[Wed Jul 09 09:54:47 2014] [notice] mpmstats: rdy 631 bsy 119 rd 4 wr 114 ka 1 log 0 dns 0 cls 0
[Wed Jul 09 09:55:48 2014] [notice] mpmstats: rdy 598 bsy 152 rd 0 wr 151 ka 1 log 0 dns 0 cls 0
[Wed Jul 09 09:56:49 2014] [notice] mpmstats: rdy 565 bsy 185 rd 5 wr 180 ka 0 log 0 dns 0 cls 0
[Wed Jul 09 09:57:50 2014] [notice] mpmstats: rdy 529 bsy 221 rd 4 wr 216 ka 1 log 0 dns 0 cls 0
[Wed Jul 09 09:58:51 2014] [notice] mpmstats: rdy 497 bsy 253 rd 1 wr 251 ka 1 log 0 dns 0 cls 0
Additional information, looks like busy threads have nothing to do with it. Few seconds before the second hang we had this:
[Wed Jul 09 11:21:54 2014] [notice] mpmstats: rdy 665 bsy 85 rd 11 wr 6 ka 66 log 0 dns 0 cls 2
We also have another web server with much lower load. The same thing happens every few days instead of every hour or few minutes. It appears as something gets clogged! please help!
Thanks kindly
Basir