Mercurial > hg > nginx-quic
view src/os/unix/ngx_setaffinity.c @ 8674:e3dbd9449b14
Changed default value of sendfile_max_chunk to 2m.
The "sendfile_max_chunk" directive is important to prevent worker
monopolization by fast connections. The 2m value implies maximum 200ms
delay with 100 Mbps links, 20ms delay with 1 Gbps links, and 2ms on
10 Gbps links. It also seems to be a good value for disks.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Fri, 29 Oct 2021 20:21:57 +0300 |
parents | 7296b38f6416 |
children |
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/* * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #if (NGX_HAVE_CPUSET_SETAFFINITY) void ngx_setaffinity(ngx_cpuset_t *cpu_affinity, ngx_log_t *log) { ngx_uint_t i; for (i = 0; i < CPU_SETSIZE; i++) { if (CPU_ISSET(i, cpu_affinity)) { ngx_log_error(NGX_LOG_NOTICE, log, 0, "cpuset_setaffinity(): using cpu #%ui", i); } } if (cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1, sizeof(cpuset_t), cpu_affinity) == -1) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "cpuset_setaffinity() failed"); } } #elif (NGX_HAVE_SCHED_SETAFFINITY) void ngx_setaffinity(ngx_cpuset_t *cpu_affinity, ngx_log_t *log) { ngx_uint_t i; for (i = 0; i < CPU_SETSIZE; i++) { if (CPU_ISSET(i, cpu_affinity)) { ngx_log_error(NGX_LOG_NOTICE, log, 0, "sched_setaffinity(): using cpu #%ui", i); } } if (sched_setaffinity(0, sizeof(cpu_set_t), cpu_affinity) == -1) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "sched_setaffinity() failed"); } } #endif