[Linux]
Linuxの性能関係の情報取得
ヒープメモリの把握
$ awk '$3=="kB"{$2=$2/1024;$3="MB"} 1' /proc/meminfo | column -t
MemTotal: 7984.82 MB
MemFree: 6698.02 MB
MemAvailable: 7423.38 MB
Buffers: 53.2734 MB
Cached: 862.145 MB
SwapCached: 0 MB
Active: 732.75 MB
Inactive: 460.84 MB
Active(anon): 278.18 MB
Inactive(anon): 0.0507812 MB
Active(file): 454.57 MB
Inactive(file): 460.789 MB
Unevictable: 0 MB
Mlocked: 0 MB
SwapTotal: 0 MB
SwapFree: 0 MB
Dirty: 0.03125 MB
Writeback: 0 MB
AnonPages: 278.172 MB
Mapped: 57.4727 MB
Shmem: 0.0585938 MB
Slab: 58.0273 MB
SReclaimable: 46.5781 MB
SUnreclaim: 11.4492 MB
KernelStack: 2.65625 MB
PageTables: 5.60547 MB
NFS_Unstable: 0 MB
Bounce: 0 MB
WritebackTmp: 0 MB
CommitLimit: 3992.41 MB
Committed_AS: 817.348 MB
VmallocTotal: 3.35544e+07 MB
VmallocUsed: 0 MB
VmallocChunk: 0 MB
AnonHugePages: 0 MB
ShmemHugePages: 0 MB
ShmemPmdMapped: 0 MB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2 MB
DirectMap4k: 16 MB
DirectMap2M: 2032 MB
DirectMap1G: 7168 MB