Over the weekend I have re-purposed my Solaris build machine to be a
compute node. I was expecting, based on raw numbers and past
experience, it to build the current C++ code base I'm working with in
50-60% of the time taken by either of my current build slaves.
Reality hasn't matched expectations big time!
An existing system, using the same motherboard but slower CPUs does the
build in about 9 minutes. After 40 minutes the build was only a little
over half done on the "fast" box...
Both builds where using Ubuntu-16.04 lx zones with more than enough memory.
Older box:
# sysinfo
{
...
"Manufacturer": "Supermicro",
"Product": "X9DRH-7TF/7F/iTF/iF",
...
"CPU Type": "Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz",
"CPU Virtualization": "vmx",
"CPU Physical Cores": 2,
...
"CPU Total Cores": 24,
"MiB of Memory": "131044",
The newer box:
"CPU Type": "Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz",
"CPU Virtualization": "vmx",
"CPU Physical Cores": 2,
...
"CPU Total Cores": 32,
"MiB of Memory": "65501",
I noticed this comparing prstat on the two hosts:
Older:
PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
33887 1005 294M 205M cpu1 1 0 0:00:04 1.6% clang/1
33919 1005 251M 156M cpu5 1 0 0:00:02 1.0% clang/1
33934 1005 238M 146M cpu0 1 0 0:00:02 0.8% clang/1
33949 1005 215M 123M cpu9 1 0 0:00:01 0.6% clang/1
33952 1005 213M 118M cpu4 1 0 0:00:01 0.6% clang/1
33955 1005 201M 107M cpu3 1 0 0:00:01 0.5% clang/1
33958 1005 200M 107M cpu10 1 0 0:00:01 0.4% clang/1
33963 1005 180M 82M cpu8 1 0 0:00:00 0.2% clang/1
33964 1005 179M 81M run 1 0 0:00:00 0.2% clang/1
33967 1005 179M 81M cpu6 1 0 0:00:00 0.2% clang/1
33186 1005 51M 38M sleep 1 0 0:00:01 0.2% ninja/1
33970 1005 174M 75M cpu2 1 0 0:00:00 0.1% clang/1
Newer:
PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
59248 1005 220M 145M wait 4 0 0:00:03 0.3% clang/1
59221 1005 240M 165M wait 4 0 0:00:04 0.2% clang/1
59236 1005 208M 135M wait 4 0 0:00:02 0.2% clang/1
59251 1005 172M 96M wait 4 0 0:00:02 0.2% clang/1
59254 1005 176M 101M wait 4 0 0:00:02 0.2% clang/1
58811 1005 651M 576M wait 4 0 0:00:20 0.2% clang/1
59043 1005 353M 278M wait 4 0 0:00:08 0.2% clang/1
59259 1005 124M 48M wait 4 0 0:00:00 0.1% clang/1
59264 1005 121M 45M wait 8 0 0:00:00 0.1% clang/1
59265 1005 119M 42M wait 8 0 0:00:00 0.1% clang/1
59200 1005 194M 119M wait 4 0 0:00:02 0.1% clang/1
59180 1005 163M 87M wait 4 0 0:00:02 0.0% clang/1
59099 1005 252M 177M wait 4 0 0:00:04 0.0% clang/1
All the "wait" states look odd to me.
Ideas?
--
Ian.
-------------------------------------------
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