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117 lines
5.7 KiB
117 lines
5.7 KiB
5 months ago
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---------- epoll without limits --------
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% time seconds usecs/call calls errors syscall
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------ ----------- ----------- --------- --------- ----------------
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47.19 2.671077 56 48093 22397 recv
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47.15 2.668840 106 25060 4858 send
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2.19 0.124020 10 12150 epoll_ctl
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1.96 0.110904 286 388 epoll_wait
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0.56 0.031565 47 670 close
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0.19 0.010481 28 380 350 connect
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0.15 0.008650 25 350 socket
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0.14 0.008204 26 320 shutdown
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0.14 0.007655 22 355 35 accept
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0.12 0.006871 10 670 setsockopt
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0.11 0.006194 9 670 fcntl64
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0.07 0.004148 12 355 brk
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0.04 0.002055 5 389 gettimeofday
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------ ----------- ----------- --------- --------- ----------------
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100.00 5.660664 89850 27640 total
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---------- sepoll without limit --------
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% time seconds usecs/call calls errors syscall
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------ ----------- ----------- --------- --------- ----------------
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49.43 2.770682 97 28486 3861 send
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46.48 2.605336 53 49317 23434 recv
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2.00 0.111916 206 542 epoll_wait
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0.65 0.036325 12 3030 epoll_ctl
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0.45 0.025282 38 670 close
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0.24 0.013247 34 388 358 connect
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0.17 0.009544 27 350 socket
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0.16 0.008734 27 320 shutdown
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0.11 0.006432 18 357 37 accept
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0.10 0.005699 9 670 setsockopt
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0.08 0.004724 7 670 fcntl64
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0.08 0.004568 6 767 gettimeofday
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0.06 0.003127 9 356 brk
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------ ----------- ----------- --------- --------- ----------------
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100.00 5.605616 85923 27690 total
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---------- sepoll with send limit only --------
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% time seconds usecs/call calls errors syscall
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------ ----------- ----------- --------- --------- ----------------
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49.21 2.779349 109 25417 418 send
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46.94 2.651058 54 49150 23368 recv
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1.77 0.099863 264 378 epoll_wait
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0.57 0.032141 14 2351 epoll_ctl
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0.46 0.025822 39 670 close
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0.25 0.014300 37 387 357 connect
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0.19 0.010530 30 350 socket
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0.15 0.008656 27 320 shutdown
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0.14 0.008008 23 354 34 accept
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0.11 0.006051 9 670 setsockopt
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0.10 0.005461 8 670 fcntl64
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0.07 0.003842 6 604 gettimeofday
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0.06 0.003120 9 358 brk
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------ ----------- ----------- --------- --------- ----------------
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100.00 5.648201 81679 24177 total
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---------- sepoll with send + recv limits --------
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Process 3173 attached - interrupt to quit
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Process 3173 detached
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% time seconds usecs/call calls errors syscall
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------ ----------- ----------- --------- --------- ----------------
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49.09 2.802918 105 26771 596 send
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47.72 2.724651 89 30761 728 recv
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1.12 0.063952 55 1169 epoll_wait
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0.47 0.026810 40 676 close
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0.44 0.025358 11 2329 epoll_ctl
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0.21 0.012255 30 403 367 connect
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0.20 0.011135 35 320 shutdown
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0.18 0.010313 29 356 socket
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0.15 0.008614 6 1351 gettimeofday
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0.13 0.007678 21 360 40 accept
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0.13 0.007218 11 676 setsockopt
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0.10 0.005559 8 676 fcntl64
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0.05 0.002882 9 327 brk
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------ ----------- ----------- --------- --------- ----------------
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100.00 5.709343 66175 1731 total
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---------- epoll with send+recv limits -----------
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Process 3271 attached - interrupt to quit
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Process 3271 detached
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% time seconds usecs/call calls errors syscall
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------ ----------- ----------- --------- --------- ----------------
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46.96 2.742476 124 22193 send
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46.55 2.718027 98 27730 recv
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2.58 0.150701 11 13331 epoll_ctl
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2.30 0.134350 135 998 epoll_wait
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0.52 0.030520 45 673 close
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0.23 0.013422 42 320 shutdown
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0.19 0.011282 29 386 353 connect
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0.19 0.011063 31 353 socket
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0.12 0.007039 20 359 39 accept
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0.11 0.006629 10 673 fcntl64
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0.10 0.005920 9 673 setsockopt
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0.09 0.005157 5 999 gettimeofday
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0.05 0.002885 9 335 brk
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------ ----------- ----------- --------- --------- ----------------
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100.00 5.839471 69023 392 total
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Conclusion
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----------
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epoll = 89850 syscalls
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sepoll = 85923 syscalls
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epoll+limits = 69023 syscalls
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sepoll+limits = 66175 syscalls
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=> limits reduce the number of syscalls by 23%
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=> sepoll reduces the number of syscalls by 4%
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=> sepoll reduces the number of epoll_ctl by 83%
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=> limits reduce the number of epoll_ctl by 24%
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=> limits increase the number of epoll_wait by 115%
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