The LLVM Project is a collection of modular and reusable compiler and toolchain technologies. - [benchmark] Get number of CPUs with sysconf() on Linux (#125603) · Prakhar-Dixit/llvm-project@fbe470c
Avoid parsing the /proc/cpuinfo just to get number of CPUs. Instead use the portable function provided by glibc. Get number of CPUs with sysconf() on Linux … 7e00e36 Contributor Author hdeller commented Jan 9, 2025 This is a follow-up patch to #1900 Let's see if it survives the...
In this article, we looked at different ways to get the number of cores on a Linux machine. First, we introduced thelscpuutility of Bash. Additionally, we learned to interpret its output to calculate the number of physical and logical cores. We also checked the commands to directly get the...
sudo apt-get install memtester 可以这样使用memtester: sudo memtester <memory_amount>M <number_of_passes> memory_amount 是测试的内存量, number_of_passes 是测试运行的遍数。例如: sudo memtester 1024M 5 sysbench内存基准测试 sysbench memory --memory-block-size=1M --memory-total-size=100G run 该...
cpu_num = get_nprocs_conf(); printf("get_nprocs_conf=%d\n", cpu_num); return 0; } /* * - _SC_NPROCESSORS_CONF * The number of processors configured. * * - _SC_NPROCESSORS_ONLN * The number of processors currently online (available). ...
(int cpu,size_t setsize,cpu_set_t*set);/* Test to see if CPU cpu is a member of set */intCPU_ISSET(int cpu,cpu_set_t*set);intCPU_ISSET_S(int cpu,size_t setsize,cpu_set_t*set);/* Return the number of CPUs in set */voidCPU_COUNT(cpu_set_t*set);voidCPU_COUNT_S(...
if (!fgets(buf, sizeof(buf), fp)) printf("failed /proc/stat read\n"); cpus[Cpu_tot].x = 0;// FIXME: can't tell by kernel version number cpus[Cpu_tot].y = 0;// FIXME: can't tell by kernel version number num = sscanf(buf, "cpu %Lu %Lu %Lu %Lu %Lu %Lu %Lu", ...
(最近最少使用算法)活动以及非活动链表使用的自旋锁 */ struct lruvec lruvec; /* * When free pages are below this point, additional steps are taken * when reading the number of free pages to avoid per-cpu counter * drift allowing watermarks to be breached * 在空闲页的数目少于这个点percpu_...
soft nofile max-file-number 有时我们在linux编程中会碰到错误:Too many open files,这个表示某个进程打开的文件句柄超过限制,再打开文件就会报错,这就是linux对用户级限制的句柄数,查询可以通过命令ulimit -n,修改可以通过命令ulimit -SHn max-file-number。
taskset -c [CPU NUMBER] -p PID 设置指定进程的CPU Affinity,对于孤立CPU,只有第一个CPU有效。 使用11,12,13,14,15号CPU运行进程 taskset -c 11,12,13,14,15 python xx.py taskset -c 11-15 python xx.py Docker容器中,孤立CPU仍然可以被使用;创建Docker容器时可以通过参数–cpuset-cpus指定容器只能...