Results of more memory
The main question is: Did this memory expansion any good? It should be visible in the output of the performance tools.
First: Hyperspy++ (that comes with WASD): It does show memory usage is much lower, but consistent with the prevous size (about a quarter) and paging hasn’t changed much:
T4 output shows similar freelist size but the modified page list has increased:
and here as well, paging statistics haven’t changed much:
which is to be expected, since memory utilization is pretty much the same:
Seems odd, but is to be expected: Since I still have to do a reconfiguration of the paging parameters – that’s what AUTOGEN is all about. It is planned to be done somewhere next week.
But on the subjective side, there are improvements: it is obvious that the increased size of the modified page list allows faster execution of PHP code. No ACCVIO or stack overflows so far; just a few:
%HTTPD-W-NOTICED, 22-JUL-2015 19:52:40, CGI:1997, not a strict CGI response
-NOTICED-I-SERVICE, http://www.grootersnet.nl:80
-NOTICED-I-CLIENT, 82.161.236.244
-NOTICED-I-URI, GET (100 bytes) /sysblog/wp-admin/admin-ajax.php?action=dashboard-widgets&widget=dashboard_primary&pagenow=dashboard
-NOTICED-I-SCRIPT, /sysblog/wp-admin/admin-ajax.php sysblog:[wp-admin]admin-ajax.php (phpwasd:) SYSBLOG:[WP-ADMIN]admin-ajax.php
-NOTICED-I-CGI, 504850205761726E696E673A20204D6F64756C652027646F (2048 bytes) PHP Warning: Module 'dom' already loaded in Unknown on line 0.
-NOTICED-I-RXTX, err:0/0 raw:1154/0 net:1154/0
yesterday from the workstation, and one today. But it all seems to work without problems.
SCSI hardware is already present
When changing the memory, I also realized there are two SCSI cards in the box: One serves the internal disk (that holds the page- and swap files), and the other connects to the external storage unit. The second is surely a KZPBA, the first one probably is as well, it too has an 68-pin outlet at the back. So there is no real need to install another KZPBA – it’s all there.
The one thing to find out is to see whether terminators are there, or not. Access is not that easy so I didn’t check last night. So there well be another (short) outage, probably in a weekend.
Hot, hot, hot
Tonight everything was stalled. Not even the console triggered a reaction. Normally, if the screen has gone blank, there are two leds flashing on the keyboard but even these were unlit. The reset button that would normally invoke ^P, had no response. So I stopped the machine the hard way (powered it off) and powered it o again, and there I found the system temperature was 44 degrees. So the machine was probably halted due to high temps. Restarted it (and found a bug in WASD?), cooled it somewhat by pushing air through the vents in front. Now hoping it won’t get that hot. (Yes, I know. I need airco in here. As soon as I have the bucks, I’ll get one)