我用来gnu parallel触发一些并发进程。下面是我使用的命令。
parallel 'node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES' ::: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ::: 1 2 3 4 5 6 | grep "Query Executed"|wc -l
按照预期，它应该同时触发 120 个并行进程。但是当我执行该ps命令时，我看到只有 90 个进程在运行。下面是输出。
[prod PTEST1] parunkarthick@dev118:~> ps -ef|grep node
2951 66965 196290 15 07:50 pts/25 00:00:00 perl /usr/bin/parallel node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES ::: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 ::: 1 2 3 4 5 6
2951 67082 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 1 1
2951 67087 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 1 2
2951 67088 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 1 3
2951 67093 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 1 4
2951 67098 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 1 5
2951 67103 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 1 6
2951 67108 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 2 1
2951 67113 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 2 2
2951 67118 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 2 3
2951 67123 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 2 4
2951 67128 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 2 5
2951 67133 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 2 6
2951 67138 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 3 1
2951 67143 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 3 2
2951 67148 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 3 3
2951 67153 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 3 4
2951 67158 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 3 5
2951 67163 66965 25 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 3 6
2951 67168 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 4 1
2951 67173 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 4 2
2951 67178 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 4 3
2951 67183 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 4 4
2951 67188 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 4 5
2951 67193 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 4 6
2951 67198 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 5 1
2951 67203 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 5 2
2951 67208 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 5 3
2951 67213 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 5 4
2951 67218 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 5 5
2951 67223 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 5 6
2951 67228 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 6 1
2951 67233 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 6 2
2951 67238 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 6 3
2951 67243 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 6 4
2951 67248 66965 25 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 6 5
2951 67253 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 6 6
2951 67258 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 7 1
2951 67263 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 7 2
2951 67268 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 7 3
2951 67273 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 7 4
2951 67278 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 7 5
2951 67283 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 7 6
2951 67288 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 8 1
2951 67293 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 8 2
2951 67298 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 8 3
2951 67303 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 8 4
2951 67308 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 8 5
2951 67313 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 8 6
2951 67318 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 9 1
2951 67323 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 9 2
2951 67328 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 9 3
2951 67333 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 9 4
2951 67338 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 9 5
2951 67343 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 9 6
2951 67348 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 10 1
2951 67353 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 10 2
2951 67358 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 10 3
2951 67363 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 10 4
2951 67368 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 10 5
2951 67373 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 10 6
2951 67378 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 11 1
2951 67383 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 11 2
2951 67388 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 11 3
2951 67393 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 11 4
2951 67398 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 11 5
2951 67403 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 11 6
2951 67404 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 12 1
2951 67409 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 12 2
2951 67418 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 12 3
2951 67423 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 12 4
2951 67428 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 12 5
2951 67433 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 12 6
2951 67438 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 13 1
2951 67443 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 13 2
2951 67448 66965 24 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 13 3
2951 67453 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 13 4
2951 67458 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 13 5
2951 67463 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 13 6
2951 67468 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 14 1
2951 67473 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 14 2
2951 67478 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 14 3
2951 67483 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 14 4
2951 67488 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 14 5
2951 67493 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 14 6
2951 67498 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 15 1
2951 67503 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 15 2
2951 67508 66965 23 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 15 3
2951 67513 66965 22 07:50 pts/25 00:00:00 node /home/parunkarthick/NodeProject/nodescript_pd.js F_CHARGES 15 4
2951 67523 66905 0 07:50 pts/0 00:00:00 grep node
[prod PTEST1] parunkarthick@dev118:~> ps -ef|grep node|wc -l
90
为什么只有 90 个进程同时被触发？
当我检查它ulimt -u的限制为 2000 时，所以真的无法理解为什么它只产生 90 个并行进程。
[prod PTEST1] parunkarthick@dev118:~> ulimit -u
2000
任何帮助将非常感激！！！
答案1
这运行了 250sleep秒吗？
seq 10000 10250 | parallel -j0 sleep