Returns total CPU time used by calling process measured in CLOCKS_PER_SEC, or (clock_t)-1 on error. 1. 2. 3. 4. 计量单位是CLOCK_PER_SEC,除以这个值来获取秒数。 在一些UNIX系统上clock()返回的时间包含所有等待子进程的时间,但在Linux上,不包括。
process.sh #!/bin/bash all_process=$(ls /proc | grep -E '[0-9]+') running_count=0 stopped_count=0 sleeping_count=0 zombie_count=0 for pid in ${all_process[*]} do test -f /proc/$pid/status && state=$(grep -aiwE "state" /proc/$pid/status | awk '{print $2}') case ...
...2.2 中度睡眠进程描述符的state使用TASK_KILLABLE表示这种状态。 可以被致命信号所打断。...进程描述符的state使用TASK_UNINTERRUPTIBLE表示这种状态。 1.5K20 深入理解Linux内核之进程睡眠(下) 4.用户态睡眠以sleep为例来说明任务在用户态是如何睡眠的。...当任务睡眠完成,定时器超时,会调用之前在__hrtimer_init...
编译kernel参考编译nexus5的linuxkernel源码。...const char * const task_state_array[] = { "R (running)", /* 0 */ "S (sleeping...)", /* 1 */ "D (disk sleep)", /* 2 */ "S (sleeping)", /...* 4 */ "S (sleeping)", /* 8 */ "Z (zombie)", /* 16 */ ...
In Linux, the ready-to-run processes are maintained on a run queue. A ready-to-run process has the state TASK_RUNNING. Once the timeslice of a running process is over, the Linux scheduler picks up another appropriate process from the run queue and allocates CPU power to that process. ...
One thing I am considering is trying to implement a better logging mechanism. The idea would be to have each thread kind of log events in a lightweight fashion (perhaps pushing to a thread-local vector), dump them out, and then later try to reconstruct the overall state (how many threads...
Red Hat Enterprise Linux release 8 Subscriber exclusive content A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more. Current Customers and Partners Log in for full access Log In New to Red Hat? Learn more about Red Hat subscriptions ...
此时,我去检查发现Linux系统的io ,cpu,发现io没有等待,cpu使用率在50%左右,尚未构成瓶颈。 该机器为24个CPU,查看innodb_thread_concurrency参数,发现该参数为8。本来该机器是作为备端的,后来该虚机扩过CPU,但是该参数还是原来的8。和应用说明需要修改参数,看能不能重启。应用反馈说该业务不是核心业务,可以重启,...
Debian GNU/Linux 9 (stretch) OSType: linux Architecture: x86_64 CPUs: 1 Total Memory: 996.5MiB Name: 49.hz-3.ci20.de ID: TK43:Z7UR:7KCT:OGQQ:ZSQJ:NDVC:SBAM:JEG7:H2WZ:TUDT:PNW6:P54Z Docker Root Dir: /var/lib/docker Debug Mode (client): false Debug Mode (server): false ...
Version:8.6 Hardware:x86_64 OS:Linux Priority:unspecified Severity:low Target Milestone:rc Target Release:8.4 Assignee:Wander QA Contact:Chunyu Hu Docs Contact: URL: Whiteboard: Duplicates (1):2052397(view as bug list) Depends On:19543611975917 ...