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Added Memory Information - Free and Total memory for different platforms
Added Memory Information - Free and Total memory for different platforms, for #846 Add RAM to summary
Resolved code review comments, for failing approval tests - total memory need to be of CI machine and free memory is dynamic. How it can be handled?
Resolved code review comments, for failing approval tests - total memory need to be of CI machine and free memory is dynamic. How it can be handled?
You should replace it in MockHostEnvironmentInfo by fake hardcoded values.
I have another concern about Linux. I don't think that it makes sense to print "Free" memory from /proc/meminfo. Currently, I have the following line in the BenchmarkDotNet output:
Total Memory=31.38 GB, Free Memory=0.37 GB
The whole stats (some numbers have a small drift because I had different activities between measurements):
$ cat /proc/meminfo
MemTotal: 32904420 kB
MemFree: 415612 kB
MemAvailable: 6204328 kB
Buffers: 1270516 kB
Cached: 3843920 kB
SwapCached: 1136 kB
Active: 27942284 kB
Inactive: 3192896 kB
Active(anon): 23296324 kB
Inactive(anon): 2192128 kB
Active(file): 4645960 kB
Inactive(file): 1000768 kB
Unevictable: 232 kB
Mlocked: 232 kB
SwapTotal: 7999484 kB
SwapFree: 7974908 kB
Dirty: 1232 kB
Writeback: 0 kB
AnonPages: 26020568 kB
Mapped: 2779036 kB
Shmem: 969228 kB
Slab: 841104 kB
SReclaimable: 611448 kB
SUnreclaim: 229656 kB
KernelStack: 28480 kB
PageTables: 153144 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 24451692 kB
Committed_AS: 40689380 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 3029980 kB
DirectMap2M: 29440000 kB
DirectMap1G: 1048576 kB
$ vmstat -s
32904420 K total memory
26693376 K used memory
27852808 K active memory
3167168 K inactive memory
545832 K free memory
1270684 K buffer memory
4394528 K swap cache
7999484 K total swap
24576 K used swap
7974908 K free swap
12136084 non-nice user cpu ticks
287263 nice user cpu ticks
2815775 system cpu ticks
192840749 idle cpu ticks
308475 IO-wait cpu ticks
0 IRQ cpu ticks
143378 softirq cpu ticks
0 stolen cpu ticks
35812936 pages paged in
501444032 pages paged out
475 pages swapped in
5888 pages swapped out
1997545531 interrupts
2354026314 CPU context switches
1533637428 boot time
2355729 forks
htop:
top:
I suggest using the htop format and print Mem/used/buffers/cache. What do you think?
The same experiment on macOS. BenchmarkDotNet:
Total Memory=16 GB, Free Memory=0.98 GB
$ vm_stat
Mach Virtual Memory Statistics: (page size of 4096 bytes)
Pages free: 90662.
Pages active: 1685717.
Pages inactive: 1553942.
Pages speculative: 38418.
Pages throttled: 0.
Pages wired down: 682750.
Pages purgeable: 20762.
"Translation faults": 1314731806.
Pages copy-on-write: 25196855.
Pages zero filled: 733593693.
Pages reactivated: 124220354.
Pages purged: 13424421.
File-backed pages: 859068.
Anonymous pages: 2419009.
Pages stored in compressor: 4872948.
Pages occupied by compressor: 142518.
Decompressions: 128182734.
Compressions: 173530019.
Pageins: 72689687.
Pageouts: 712547.
Swapins: 80355093.
Swapouts: 84599798.
htop:
top:
Linux: Makes sense and this explains why free memory is always showed as lower value. However, as Used Memory already includes buffer+cache, Can we show: Total/Free/Buffers/Cache?
MacOS: What about MacOS, which fields need to be considered?
@ChiragRupani, I guess we can print "Total/Used" on all operating systems because "Used memory" provides useful information not only on Windows but also on Linux and macOS.
Its better to keep available memory as it is since available memory can be calculated as below: Linux: MemAvailable MacOS: Free + Inactive