Table of Contents
8 proc.mem 监控项中memtype参数类型的注意事项
概述
Linux, AIX, FreeBSD 和 Solaris 都支持memtype参数。
'memtype' 参数的三个常用值 pmem, rss 和 vsize在所有系统中都适用。另外, 在一些系统中只支持该系统下的 'memtype' 值。
AIX
请参见表中AIX上的“memtype”参数所支持的值.
| 支持的参数值 描述 | Source | n procentry64 structure Tries t | be compatible with |
|---|---|---|---|
| vsize (( - default value)) | 虚拟内存大小 pi_s | ze | |
| pmem | 实际内存的百分比 pi_prm | ps -o p | em |
| rss | 驻留集大小 pi_ | rss + pi_drss ps - | rssize |
| size | 进程大小(代码+数据) pi_dvm | "ps gvw | SIZE column |
| dsize | 数据大小 pi |
dsize | |
| tsize | 文本(代码)的大小 pi_ts | ze "ps gv | " TSIZ column |
| sdsize | 来自共享库的数据大小 pi_sdsiz | ||
| drss | 数据驻留集大小 pi_dr | s | |
| trss | 文本驻留集大小 pi_tr | s | |
FreeBSD
请参见表中FreeBSD上的“memtype”参数支持的值。
| Supported value | Description | Source in kinfo_proc structure | Tries to be compatible with |
|---|---|---|---|
| vsize | 虚拟内存大小 kp_e | roc.e_vm.vm_map.size or ki_size ps -o | vsz |
| pmem | 实际内存的百分比 calcula | ed from rss ps -o p | em |
| rss | 驻留集大小 kp_ | proc.e_vm.vm_rssize or ki_rssize ps - | rss |
| size (( - default value)) | 进程(代码+数据+堆栈)大小 tsize + d | ize + ssize | |
| tsize | 文本(代码)的大小 kp_ep | oc.e_vm.vm_tsize or ki_tsize ps -o | siz |
| dsize | 数据大小 kp |
eproc.e_vm.vm_dsize or ki_dsize ps | o dsiz |
| ssize | 堆栈大小 kp |
eproc.e_vm.vm_ssize or ki_ssize ps | o ssiz |
Linux
请参见表中Linux上的“memtype”参数支持的值。
| Supported value | Description | Source in /proc/<pid>/status file |
|---|---|---|
| vsize (( - default value)) | 虚拟内存大小 VmSiz | |
| pmem | 实际内存的百分比 (VmRSS/ | otal_memory) * 100 |
| rss | 驻留集大小 VmRS | |
| data | 数据段的大小 VmDat | |
| exe | 代码段的大小 VmExe | |
| hwm | 驻留集峰值大小 VmHWM | |
| lck | 锁定内存大小 VmLck | |
| lib | 共享库的大小 VmLib | |
| peak | 虚拟内存峰值大小 VmPeak | |
| pin | 固定的页面大小 VmPin | |
| pte | 页表条目的大小 VmPTE | |
| size | 进程码+数据+栈段大小 VmExe + | mData + VmStk |
| stk | 堆栈段大小 VmSt | |
| swap | 使用的交换空间大小 VmSwap | |
Linux上注意事项:
- 一些旧版本Linux 内核并不是支持所有'memtype' 值的。例如, Linux 内核版本2.4就不支持
hwm,pin,peak,pte和swap等值。 - 我们发现 Zabbix agent 主动检查进程参数
proc.mem[...,...,...,...,data]显示的值比agent 的 /proc/<pid>/status 文件中VmData行的值大大 4 kB。在agent自我监控管理时，agent的数据碎片增长率4 kB ，然后又返回到先前的值。
Solaris
请参见表中的Solaris上的“memtype”参数所支持的值。
| 支持的参数值 描述 | Source | n psinfo structure 兼容 | |
|---|---|---|---|
| vsize (( - default value)) | Size of process image | pr_size | ps -o vsz |
| pmem | 实际内存的百分比 pr_pct | em ps -o p | em |
| rss | 驻留集大小 pr_可能会被低估 - 参看 "man ps"中rss描述. | ssize ps - | rss |
8 Notes on memtype parameter in proc.mem items
Overview
The memtype parameter is supported on Linux, AIX, FreeBSD, and Solaris platforms.
Three common values of 'memtype' are supported on all of these platforms: pmem, rss and vsize. Additionally, platform-specific 'memtype' values are supported on some platforms.
AIX
See values supported for 'memtype' parameter on AIX in the table.
| Supported value | Description | Source in procentry64 structure | Tries to be compatible with |
|---|---|---|---|
| vsize (( - default value)) | Virtual memory size | pi_size | |
| pmem | Percentage of real memory | pi_prm | ps -o pmem |
| rss | Resident set size | pi_trss + pi_drss | ps -o rssize |
| size | Size of process (code + data) | pi_dvm | "ps gvw" SIZE column |
| dsize | Data size | pi_dsize | |
| tsize | Text (code) size | pi_tsize | "ps gvw" TSIZ column |
| sdsize | Data size from shared library | pi_sdsize | |
| drss | Data resident set size | pi_drss | |
| trss | Text resident set size | pi_trss | |
FreeBSD
See values supported for 'memtype' parameter on FreeBSD in the table.
| Supported value | Description | Source in kinfo_proc structure | Tries to be compatible with |
|---|---|---|---|
| vsize | Virtual memory size | kp_eproc.e_vm.vm_map.size or ki_size | ps -o vsz |
| pmem | Percentage of real memory | calculated from rss | ps -o pmem |
| rss | Resident set size | kp_eproc.e_vm.vm_rssize or ki_rssize | ps -o rss |
| size (( - default value)) | Size of process (code + data + stack) | tsize + dsize + ssize | |
| tsize | Text (code) size | kp_eproc.e_vm.vm_tsize or ki_tsize | ps -o tsiz |
| dsize | Data size | kp_eproc.e_vm.vm_dsize or ki_dsize | ps -o dsiz |
| ssize | Stack size | kp_eproc.e_vm.vm_ssize or ki_ssize | ps -o ssiz |
Linux
See values supported for 'memtype' parameter on Linux in the table.
| Supported value | Description | Source in /proc/<pid>/status file |
|---|---|---|
| vsize (( - default value)) | Virtual memory size | VmSize |
| pmem | Percentage of real memory | (VmRSS/total_memory) * 100 |
| rss | Resident set size | VmRSS |
| data | Size of data segment | VmData |
| exe | Size of code segment | VmExe |
| hwm | Peak resident set size | VmHWM |
| lck | Size of locked memory | VmLck |
| lib | Size of shared libraries | VmLib |
| peak | Peak virtual memory size | VmPeak |
| pin | Size of pinned pages | VmPin |
| pte | Size of page table entries | VmPTE |
| size | Size of process code + data + stack segments | VmExe + VmData + VmStk |
| stk | Size of stack segment | VmStk |
| swap | Size of swap space used | VmSwap |
Notes for Linux:
- Not all 'memtype' values are supported by older Linux kernels. For example, Linux 2.4 kernels do not support
hwm,pin,peak,pteandswapvalues. - We have noticed that self-monitoring of the Zabbix agent active check process with
proc.mem[...,...,...,...,data]shows a value that is 4 kB larger than reported byVmDataline in the agent's /proc/<pid>/status file. At the time of self-measurement the agent's data segment increases by 4 kB and then returns to the previous size.
Solaris
See values supported for 'memtype' parameter on Solaris in the table.
| Supported value | Description | Source in psinfo structure | Tries to be compatible with |
|---|---|---|---|
| vsize (( - default value)) | Size of process image | pr_size | ps -o vsz |
| pmem | Percentage of real memory | pr_pctmem | ps -o pmem |
| rss | Resident set size It may be underestimated - see rss description in "man ps". |
pr_rssize | ps -o rss |