MD C 프로그램을 실행하기 위해 내 컴퓨터의 클러스터를 사용하고 있지만 이러한 클러스터의 잠재력을 최대한 활용할 수는 없습니다.
하지만 이 노드에는 16개의 CPU가 있고 이 CPU에는 15개의 작업만 제공합니다. 그러나 나는 그 잠재력을 최대한으로 실현할 수 없었습니다.
아래는 결과입니다ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 23636 1624 ? Ss Jun15 0:01 /sbin/init
root 2 0.0 0.0 0 0 ? S Jun15 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? S Jun15 0:00 [migration/0]
root 4 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/0]
root 5 0.0 0.0 0 0 ? S Jun15 0:00 [migration/0]
root 6 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/0]
root 7 0.0 0.0 0 0 ? S Jun15 0:00 [migration/1]
root 8 0.0 0.0 0 0 ? S Jun15 0:00 [migration/1]
root 9 0.0 0.0 0 0 ? S Jun15 0:05 [ksoftirqd/1]
root 10 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/1]
root 11 0.0 0.0 0 0 ? S Jun15 0:00 [migration/2]
root 12 0.0 0.0 0 0 ? S Jun15 0:00 [migration/2]
root 13 0.0 0.0 0 0 ? S Jun15 0:01 [ksoftirqd/2]
root 14 0.0 0.0 0 0 ? S Jun15 0:02 [watchdog/2]
root 15 0.0 0.0 0 0 ? S Jun15 0:00 [migration/3]
root 16 0.0 0.0 0 0 ? S Jun15 0:00 [migration/3]
root 17 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/3]
root 18 0.0 0.0 0 0 ? S Jun15 0:17 [watchdog/3]
root 19 0.0 0.0 0 0 ? S Jun15 0:00 [migration/4]
root 20 0.0 0.0 0 0 ? S Jun15 0:00 [migration/4]
root 21 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/4]
root 22 0.0 0.0 0 0 ? S Jun15 0:02 [watchdog/4]
root 23 0.0 0.0 0 0 ? S Jun15 0:00 [migration/5]
root 24 0.0 0.0 0 0 ? S Jun15 0:00 [migration/5]
root 25 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/5]
root 26 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/5]
root 27 0.0 0.0 0 0 ? S Jun15 0:00 [migration/6]
root 28 0.0 0.0 0 0 ? S Jun15 0:00 [migration/6]
root 29 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/6]
root 30 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/6]
root 31 0.0 0.0 0 0 ? S Jun15 0:00 [migration/7]
root 32 0.0 0.0 0 0 ? S Jun15 0:00 [migration/7]
root 33 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/7]
root 34 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/7]
root 35 0.0 0.0 0 0 ? S Jun15 0:00 [migration/8]
root 36 0.0 0.0 0 0 ? S Jun15 0:00 [migration/8]
root 37 0.0 0.0 0 0 ? S Jun15 0:01 [ksoftirqd/8]
root 38 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/8]
root 39 0.0 0.0 0 0 ? S Jun15 0:00 [migration/9]
root 40 0.0 0.0 0 0 ? S Jun15 0:00 [migration/9]
root 41 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/9]
root 42 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/9]
root 43 0.0 0.0 0 0 ? S Jun15 0:00 [migration/10]
root 44 0.0 0.0 0 0 ? S Jun15 0:00 [migration/10]
root 45 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/10]
root 46 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/10]
root 47 0.0 0.0 0 0 ? S Jun15 0:00 [migration/11]
root 48 0.0 0.0 0 0 ? S Jun15 0:00 [migration/11]
root 49 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/11]
root 50 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/11]
root 51 0.0 0.0 0 0 ? S Jun15 0:00 [migration/12]
root 52 0.0 0.0 0 0 ? S Jun15 0:00 [migration/12]
root 53 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/12]
root 54 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/12]
root 55 0.0 0.0 0 0 ? S Jun15 0:00 [migration/13]
root 56 0.0 0.0 0 0 ? S Jun15 0:00 [migration/13]
root 57 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/13]
root 58 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/13]
root 59 0.0 0.0 0 0 ? S Jun15 0:00 [migration/14]
root 60 0.0 0.0 0 0 ? S Jun15 0:00 [migration/14]
root 61 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/14]
root 62 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/14]
root 63 0.0 0.0 0 0 ? S Jun15 0:00 [migration/15]
root 64 0.0 0.0 0 0 ? S Jun15 0:00 [migration/15]
root 65 0.0 0.0 0 0 ? S Jun15 0:00 [ksoftirqd/15]
root 66 0.0 0.0 0 0 ? S Jun15 0:00 [watchdog/15]
root 67 0.0 0.0 0 0 ? S Jun15 0:00 [events/0]
root 68 0.0 0.0 0 0 ? S Jun15 0:16 [events/1]
root 69 0.0 0.0 0 0 ? S Jun15 0:26 [events/2]
root 70 0.0 0.0 0 0 ? S Jun15 1:24 [events/3]
root 71 0.0 0.0 0 0 ? S Jun15 4:17 [events/4]
root 72 0.0 0.0 0 0 ? S Jun15 4:11 [events/5]
root 73 0.0 0.0 0 0 ? S Jun15 0:31 [events/6]
root 74 0.0 0.0 0 0 ? S Jun15 2:34 [events/7]
root 75 0.0 0.0 0 0 ? S Jun15 1:11 [events/8]
root 76 0.0 0.0 0 0 ? S Jun15 11:39 [events/9]
root 77 0.0 0.0 0 0 ? S Jun15 1:15 [events/10]
root 78 0.0 0.0 0 0 ? S Jun15 0:01 [events/11]
root 79 0.0 0.0 0 0 ? S Jun15 0:00 [events/12]
root 80 0.0 0.0 0 0 ? S Jun15 0:01 [events/13]
root 81 0.0 0.0 0 0 ? S Jun15 0:00 [events/14]
root 82 0.0 0.0 0 0 ? S Jun15 0:00 [events/15]
root 83 0.0 0.0 0 0 ? S Jun15 0:00 [cpuset]
root 84 0.0 0.0 0 0 ? S Jun15 0:00 [khelper]
root 85 0.0 0.0 0 0 ? S Jun15 0:00 [netns]
root 86 0.0 0.0 0 0 ? S Jun15 0:00 [async/mgr]
root 87 0.0 0.0 0 0 ? S Jun15 0:00 [pm]
root 88 0.0 0.0 0 0 ? S Jun15 0:09 [sync_supers]
root 89 0.0 0.0 0 0 ? S Jun15 0:07 [bdi-default]
root 90 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/0]
root 91 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/1]
root 92 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/2]
root 93 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/3]
root 94 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/4]
root 95 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/5]
root 96 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/6]
root 97 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/7]
root 98 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/8]
root 99 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/9]
root 100 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/10]
root 101 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/11]
root 102 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/12]
root 103 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/13]
root 104 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/14]
root 105 0.0 0.0 0 0 ? S Jun15 0:00 [kintegrityd/15]
root 106 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/0]
root 107 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/1]
root 108 0.0 0.0 0 0 ? S Jun15 0:01 [kblockd/2]
root 109 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/3]
root 110 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/4]
root 111 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/5]
root 112 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/6]
root 113 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/7]
root 114 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/8]
root 115 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/9]
root 116 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/10]
root 117 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/11]
root 118 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/12]
root 119 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/13]
root 120 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/14]
root 121 0.0 0.0 0 0 ? S Jun15 0:00 [kblockd/15]
root 122 0.0 0.0 0 0 ? S Jun15 0:00 [kacpid]
root 123 0.0 0.0 0 0 ? S Jun15 0:00 [kacpi_notify]
root 124 0.0 0.0 0 0 ? S Jun15 0:00 [kacpi_hotplug]
root 125 0.0 0.0 0 0 ? S Jun15 0:00 [ata/0]
root 126 0.0 0.0 0 0 ? S Jun15 0:00 [ata/1]
root 127 0.0 0.0 0 0 ? S Jun15 0:00 [ata/2]
root 128 0.0 0.0 0 0 ? S Jun15 0:00 [ata/3]
root 129 0.0 0.0 0 0 ? S Jun15 0:00 [ata/4]
root 130 0.0 0.0 0 0 ? S Jun15 0:00 [ata/5]
root 131 0.0 0.0 0 0 ? S Jun15 0:00 [ata/6]
root 132 0.0 0.0 0 0 ? S Jun15 0:00 [ata/7]
root 133 0.0 0.0 0 0 ? S Jun15 0:00 [ata/8]
root 134 0.0 0.0 0 0 ? S Jun15 0:00 [ata/9]
root 135 0.0 0.0 0 0 ? S Jun15 0:00 [ata/10]
root 136 0.0 0.0 0 0 ? S Jun15 0:00 [ata/11]
root 137 0.0 0.0 0 0 ? S Jun15 0:00 [ata/12]
root 138 0.0 0.0 0 0 ? S Jun15 0:00 [ata/13]
root 139 0.0 0.0 0 0 ? S Jun15 0:00 [ata/14]
root 140 0.0 0.0 0 0 ? S Jun15 0:00 [ata/15]
root 141 0.0 0.0 0 0 ? S Jun15 0:00 [ata_aux]
root 142 0.0 0.0 0 0 ? S Jun15 0:00 [ksuspend_usbd]
root 143 0.0 0.0 0 0 ? S Jun15 0:00 [khubd]
root 144 0.0 0.0 0 0 ? S Jun15 0:00 [kseriod]
root 145 0.0 0.0 0 0 ? S Jun15 0:00 [md/0]
root 146 0.0 0.0 0 0 ? S Jun15 0:00 [md/1]
root 147 0.0 0.0 0 0 ? S Jun15 0:00 [md/2]
root 148 0.0 0.0 0 0 ? S Jun15 0:00 [md/3]
root 149 0.0 0.0 0 0 ? S Jun15 0:00 [md/4]
root 150 0.0 0.0 0 0 ? S Jun15 0:00 [md/5]
root 151 0.0 0.0 0 0 ? S Jun15 0:00 [md/6]
root 152 0.0 0.0 0 0 ? S Jun15 0:00 [md/7]
root 153 0.0 0.0 0 0 ? S Jun15 0:00 [md/8]
root 154 0.0 0.0 0 0 ? S Jun15 0:00 [md/9]
root 155 0.0 0.0 0 0 ? S Jun15 0:00 [md/10]
root 156 0.0 0.0 0 0 ? S Jun15 0:00 [md/11]
root 157 0.0 0.0 0 0 ? S Jun15 0:00 [md/12]
root 158 0.0 0.0 0 0 ? S Jun15 0:00 [md/13]
root 159 0.0 0.0 0 0 ? S Jun15 0:00 [md/14]
root 160 0.0 0.0 0 0 ? S Jun15 0:00 [md/15]
root 161 0.0 0.0 0 0 ? S Jun15 0:00 [md_misc/0]
root 162 0.0 0.0 0 0 ? S Jun15 0:00 [md_misc/1]
root 163 0.0 0.0 0 0 ? S Jun15 0:00 [md_misc/2]
root 164 0.0 0.0 0 0 ? S Jun15 0:00 [md_misc/3]
root 165 0.0 0.0 0 0 ? S Jun15 0:00 [md_misc/4]
root 166 0.0 0.0 0 0 ? S Jun15 0:00 [md_misc/5]
root 167 0.0 0.0 0 0 ? S Jun15 0:00 [md_misc/6]
root 168 0.0 0.0 0 0 ? S Jun15 0:00 [md_misc/7]
root 169 0.0 0.0 0 0 ? S Jun15 0:00 [md_misc/8]
root 170 0.0 0.0 0 0 ? S Jun15 0:00 [md_misc/9]
root 178 0.0 0.0 0 0 ? S Jun15 0:00 [kswapd0]
root 179 0.0 0.0 0 0 ? S Jun15 0:00 [kswapd1]
root 180 0.0 0.0 0 0 ? SN Jun15 0:00 [ksmd]
root 181 0.0 0.0 0 0 ? SN Jun15 0:10 [khugepaged]
root 182 0.0 0.0 0 0 ? S Jun15 0:00 [aio/0]
root 183 0.0 0.0 0 0 ? S Jun15 0:00 [aio/1]
root 184 0.0 0.0 0 0 ? S Jun15 0:00 [aio/2]
root 185 0.0 0.0 0 0 ? S Jun15 0:00 [aio/3]
root 186 0.0 0.0 0 0 ? S Jun15 0:00 [aio/4]
root 187 0.0 0.0 0 0 ? S Jun15 0:00 [aio/5]
root 188 0.0 0.0 0 0 ? S Jun15 0:00 [aio/6]
root 189 0.0 0.0 0 0 ? S Jun15 0:00 [aio/7]
root 190 0.0 0.0 0 0 ? S Jun15 0:00 [aio/8]
root 191 0.0 0.0 0 0 ? S Jun15 0:00 [aio/9]
root 192 0.0 0.0 0 0 ? S Jun15 0:00 [aio/10]
root 193 0.0 0.0 0 0 ? S Jun15 0:00 [aio/11]
root 194 0.0 0.0 0 0 ? S Jun15 0:00 [aio/12]
root 195 0.0 0.0 0 0 ? S Jun15 0:00 [aio/13]
root 196 0.0 0.0 0 0 ? S Jun15 0:00 [aio/14]
root 197 0.0 0.0 0 0 ? S Jun15 0:00 [aio/15]
root 198 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/0]
root 199 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/1]
root 200 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/2]
root 201 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/3]
root 202 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/4]
root 203 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/5]
root 204 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/6]
root 205 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/7]
root 206 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/8]
root 207 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/9]
root 208 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/10]
root 209 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/11]
root 210 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/12]
root 211 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/13]
root 212 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/14]
root 213 0.0 0.0 0 0 ? S Jun15 0:00 [crypto/15]
root 218 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/0]
root 219 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/1]
root 220 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/2]
root 221 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/3]
root 222 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/4]
root 223 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/5]
root 224 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/6]
root 225 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/7]
root 226 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/8]
root 227 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/9]
root 228 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/10]
root 229 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/11]
root 230 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/12]
root 231 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/13]
root 232 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/14]
root 233 0.0 0.0 0 0 ? S Jun15 0:00 [kthrotld/15]
root 246 0.0 0.0 0 0 ? S Jun15 0:00 [kpsmoused]
root 247 0.0 0.0 0 0 ? S Jun15 0:00 [usbhid_resumer]
root 277 0.0 0.0 0 0 ? S Jun15 0:00 [kstriped]
root 611 0.0 0.0 0 0 ? S Jun15 0:00 [scsi_eh_0]
root 612 0.0 0.0 0 0 ? S Jun15 0:00 [scsi_eh_1]
root 613 0.0 0.0 0 0 ? S Jun15 0:00 [scsi_eh_2]
root 614 0.0 0.0 0 0 ? S Jun15 0:00 [scsi_eh_3]
root 615 0.0 0.0 0 0 ? S Jun15 0:00 [scsi_eh_4]
root 616 0.0 0.0 0 0 ? S Jun15 0:00 [scsi_eh_5]
root 763 0.0 0.0 0 0 ? S Jun15 0:00 [scsi_eh_6]
root 764 0.0 0.0 0 0 ? S Jun15 0:00 [scsi_wq_6]
root 769 0.0 0.0 0 0 ? S Jun15 0:00 [scsi_eh_7]
root 770 0.0 0.0 0 0 ? S Jun15 0:00 [fw_event0]
root 773 0.0 0.0 0 0 ? S Jun15 0:54 [poll_0_status]
root 818 0.0 0.0 0 0 ? S Jun15 0:12 [jbd2/sda3-8]
root 819 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 820 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 821 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 822 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 823 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 824 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 825 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 826 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 827 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 828 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 829 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 830 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 831 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 832 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 833 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 834 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 921 0.0 0.0 11672 1652 ? S<s Jun15 0:00 /sbin/udevd -d
root 1292 0.0 0.0 0 0 ? S Jun15 1:03 [edac-poller]
root 1892 0.0 0.0 0 0 ? S Jun15 0:00 [mlx4]
root 1894 0.0 0.0 0 0 ? S Jun15 0:00 [mlx4_opreq]
root 1895 0.0 0.0 0 0 ? S Jun15 0:12 [flush-8:0]
root 1896 0.0 0.0 0 0 ? S Jun15 0:12 [mlx4_sense]
root 1905 0.0 0.0 0 0 ? S Jun15 0:00 [mlx4_en]
root 2077 0.0 0.0 11684 1664 ? S< Jun15 0:00 /sbin/udevd -d
root 2125 0.0 0.0 0 0 ? S Jun15 0:00 [jbd2/sda1-8]
root 2126 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2127 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2128 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2129 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2130 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2131 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2132 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2133 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2134 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2135 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2136 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2137 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2138 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2139 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2140 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2141 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2142 0.0 0.0 0 0 ? S Jun15 0:00 [jbd2/sda5-8]
root 2143 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2144 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2145 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2146 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2147 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2148 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2149 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2150 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2151 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2152 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2153 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2154 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2155 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2156 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2157 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2158 0.0 0.0 0 0 ? S Jun15 0:00 [ext4-dio-unwrit]
root 2202 0.0 0.0 0 0 ? S Jun15 0:00 [kauditd]
root 2250 0.0 0.0 0 0 ? S Jun15 0:00 [mthcacatas]
root 2253 0.0 0.0 0 0 ? S Jun15 0:00 [mlx4_ib]
root 2254 0.0 0.0 0 0 ? S Jun15 0:00 [ib_mad1]
root 2261 0.0 0.0 0 0 ? S Jun15 0:00 [iw_cxgb3]
root 2265 0.0 0.0 0 0 ? S Jun15 0:00 [nesewq]
root 2266 0.0 0.0 0 0 ? S Jun15 0:00 [nesdwq]
root 2270 0.0 0.0 11668 1660 ? S< Jun15 0:00 /sbin/udevd -d
root 2273 0.0 0.0 0 0 ? S Jun15 0:00 [ib_mcast]
root 2274 0.0 0.0 0 0 ? S Jun15 0:00 [ib_inform]
root 2275 0.0 0.0 0 0 ? S Jun15 0:00 [local_sa]
root 2276 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/0]
root 2277 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/1]
root 2278 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/2]
root 2279 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/3]
root 2280 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/4]
root 2281 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/5]
root 2282 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/6]
root 2283 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/7]
root 2284 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/8]
root 2285 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/9]
root 2286 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/10]
root 2287 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/11]
root 2288 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/12]
root 2289 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/13]
root 2290 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/14]
root 2291 0.0 0.0 0 0 ? S Jun15 0:00 [ib_cm/15]
root 2292 0.0 0.0 0 0 ? S Jun15 0:51 [ipoib]
root 2293 0.0 0.0 0 0 ? S Jun15 3:17 [ipoib_auto_mode]
root 2358 0.0 0.0 0 0 ? S Jun15 0:01 [ib_addr]
root 2359 0.0 0.0 0 0 ? S Jun15 0:00 [iw_cm_wq]
root 2360 0.0 0.0 0 0 ? S Jun15 0:00 [rdma_cm]
root 2594 0.0 0.0 93224 896 ? S<sl Jun15 0:04 auditd
155 2664 0.0 0.0 60788 9360 ? S Jun15 0:11 /usr/libexec/systemtap/stap-serverd -r 2.6.32-220.el6.x86_64 -a x86_64 --log=/var/log/stap-server/log
root 2691 0.0 0.0 250856 1560 ? Sl Jun15 0:01 /sbin/rsyslogd -i /var/run/syslogd.pid -c 4
root 2714 0.0 0.0 0 0 ? S Jun15 0:00 [kondemand/0]
root 2715 0.0 0.0 0 0 ? S Jun15 0:24 [kondemand/1]
root 2716 0.0 0.0 0 0 ? S Jun15 0:48 [kondemand/2]
root 2717 0.0 0.0 0 0 ? S Jun15 2:03 [kondemand/3]
root 2718 0.0 0.0 0 0 ? S Jun15 5:41 [kondemand/4]
root 2719 0.0 0.0 0 0 ? S Jun15 1:25 [kondemand/5]
root 2720 0.0 0.0 0 0 ? S Jun15 1:26 [kondemand/6]
root 2721 0.0 0.0 0 0 ? S Jun15 2:09 [kondemand/7]
root 2722 0.0 0.0 0 0 ? S Jun15 0:40 [kondemand/8]
root 2723 0.0 0.0 0 0 ? S Jun15 1:28 [kondemand/9]
root 2724 0.0 0.0 0 0 ? S Jun15 0:09 [kondemand/10]
root 2725 0.0 0.0 0 0 ? S Jun15 0:00 [kondemand/11]
root 2726 0.0 0.0 0 0 ? S Jun15 0:00 [kondemand/12]
root 2727 0.0 0.0 0 0 ? S Jun15 0:00 [kondemand/13]
root 2728 0.0 0.0 0 0 ? S Jun15 0:00 [kondemand/14]
root 2729 0.0 0.0 0 0 ? S Jun15 0:00 [kondemand/15]
root 2740 0.0 0.0 9204 644 ? Ss Jun15 17:34 irqbalance
rpc 2754 0.0 0.0 19024 984 ? Ss Jun15 0:02 rpcbind
rpcuser 2772 0.0 0.0 23200 1204 ? Ss Jun15 0:00 rpc.statd
root 2800 0.0 0.0 0 0 ? S Jun15 3:22 [rpciod/0]
root 2801 0.0 0.0 0 0 ? S Jun15 3:22 [rpciod/1]
root 2802 0.0 0.0 0 0 ? S Jun15 3:21 [rpciod/2]
root 2803 0.0 0.0 0 0 ? S Jun15 3:18 [rpciod/3]
root 2804 0.0 0.0 0 0 ? S Jun15 3:16 [rpciod/4]
root 2805 0.0 0.0 0 0 ? S Jun15 3:13 [rpciod/5]
root 2806 0.0 0.0 0 0 ? S Jun15 3:10 [rpciod/6]
root 2807 0.0 0.0 0 0 ? S Jun15 3:08 [rpciod/7]
root 2808 0.0 0.0 0 0 ? S Jun15 26:27 [rpciod/8]
root 2809 0.0 0.0 0 0 ? S Jun15 3:58 [rpciod/9]
root 2810 0.0 0.0 0 0 ? S Jun15 3:34 [rpciod/10]
root 2811 0.0 0.0 0 0 ? S Jun15 3:17 [rpciod/11]
root 2812 0.0 0.0 0 0 ? S Jun15 3:11 [rpciod/12]
root 2813 0.0 0.0 0 0 ? S Jun15 3:18 [rpciod/13]
root 2814 0.0 0.0 0 0 ? S Jun15 3:07 [rpciod/14]
출력이 사이트 제한을 초과했기 때문에 정확한 파일을 GoogleDrive에 저장하고 있습니다(유용할 수 있는 경우).
그렇다면 CPU의 잠재력을 최대한 활용할 수 있는 방법이 있습니까?
답변1
주석에서 언급했듯이 코드나 기타 정보(어차피 여기서는 주제가 아님)를 보지 않고도 제가 말할 수 있는 것은 프로그램이 IO 바인딩된 것처럼 보인다는 것뿐입니다.
이는 계산이 더 많은 CPU를 사용할 수 있지만 데이터를 기다려야 하고 계산하는 대신 대기하는 데 많은 사이클을 소비해야 함을 의미합니다. 이는 코드 작성 방식(루프 최적화, 벡터화 등) 때문일 수 있습니다. 일반적인 문제는 많은 수의 캐시 누락을 초래하는 방식으로 데이터에 액세스하는 것입니다. L3 캐시를 공유하는 여러 코어가 있을 수도 있으며, 모두 서로 다른 데이터를 처리하는 경우 많은 누락이 발생할 수 있습니다. 메인 DRAM에서 메모리를 가져오는 것은 온칩 캐시보다 훨씬 느립니다. 데이터가 디스크에서 오는 경우 DRAM 대기 시간 외에도 디스크 읽기 대기 시간을 처리해야 합니다. 데이터가 이더넷이나 다른 상호 연결을 통해 이동하는 경우 이러한 읽기의 대기 시간도 고려해야 합니다. 특히 큰 쓰기 청크를 버퍼링하는 대신 작은 청크에 자주 쓰는 경우 디스크 쓰기에 대한 대기 시간이 많이 발생할 수도 있습니다.
간단히 말해서, 코어에서 100% CPU 사용량을 유지하는 능력을 제한하는 IO 성능 고려 사항이 많이 있습니다. 내 조언은 코드를 분석하고, IO 제한 사항을 찾아낸 다음, 코드가 효율적인지 확인하고 거기에서 앞으로 나아가라는 것입니다.
답변2
이는 애플리케이션이 IO 바인딩되어 있음을 의미합니다. 즉, 하드 드라이브/네트워크 등이 프로세서를 따라잡을 수 없으므로 프로세서는 IO 데이터를 최대한 활용하는 대신 IO 데이터를 기다리는 데 많은 시간을 소비합니다.
애플리케이션이 의존하는 IO가 네트워크이고 전체 대역폭으로 다운로드하지 않는 경우 각 프로세스/스레드가 다운로드 채널을 추가하여 대역폭 사용량이 최대화된다고 가정하면 더 많은 프로세스/스레드를 추가하여 효율성을 향상시킬 수 있습니다.