Mercurial > vim
annotate src/testdir/test_memory_usage.vim @ 16044:f4a206d7a04d v8.1.1027
patch 8.1.1027: memory usage test sometimes fails
commit https://github.com/vim/vim/commit/08cda65ddfbb4bce8cef43726a0c00817fc47327
Author: Bram Moolenaar <Bram@vim.org>
Date: Wed Mar 20 22:45:01 2019 +0100
patch 8.1.1027: memory usage test sometimes fails
Problem: Memory usage test sometimes fails.
Solution: Use 80% of before.last as the lower limit. (Christian Brabandt)
author | Bram Moolenaar <Bram@vim.org> |
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date | Wed, 20 Mar 2019 23:00:05 +0100 |
parents | 879829e44091 |
children | 853d73097325 |
rev | line source |
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16003
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1 " Tests for memory usage. |
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2 |
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3 if !has('terminal') || has('gui_running') || $ASAN_OPTIONS !=# '' |
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4 " Skip tests on Travis CI ASAN build because it's difficult to estimate |
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5 " memory usage. |
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6 finish |
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7 endif |
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8 |
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9 source shared.vim |
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10 |
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11 func s:pick_nr(str) abort |
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12 return substitute(a:str, '[^0-9]', '', 'g') * 1 |
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13 endfunc |
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14 |
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15 if has('win32') |
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16 if !executable('wmic') |
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17 finish |
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18 endif |
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19 func s:memory_usage(pid) abort |
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20 let cmd = printf('wmic process where processid=%d get WorkingSetSize', a:pid) |
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21 return s:pick_nr(system(cmd)) / 1024 |
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22 endfunc |
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23 elseif has('unix') |
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24 if !executable('ps') |
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25 finish |
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26 endif |
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27 func s:memory_usage(pid) abort |
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28 return s:pick_nr(system('ps -o rss= -p ' . a:pid)) |
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29 endfunc |
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30 else |
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31 finish |
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32 endif |
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33 |
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34 " Wait for memory usage to level off. |
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35 func s:monitor_memory_usage(pid) abort |
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36 let proc = {} |
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37 let proc.pid = a:pid |
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38 let proc.hist = [] |
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39 let proc.min = 0 |
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40 let proc.max = 0 |
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41 |
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42 func proc.op() abort |
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43 " Check the last 200ms. |
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44 let val = s:memory_usage(self.pid) |
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45 if self.min > val |
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46 let self.min = val |
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47 elseif self.max < val |
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48 let self.max = val |
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49 endif |
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50 call add(self.hist, val) |
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51 if len(self.hist) < 20 |
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52 return 0 |
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53 endif |
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54 let sample = remove(self.hist, 0) |
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55 return len(uniq([sample] + self.hist)) == 1 |
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56 endfunc |
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57 |
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58 call WaitFor({-> proc.op()}, 10000) |
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59 return {'last': get(proc.hist, -1), 'min': proc.min, 'max': proc.max} |
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60 endfunc |
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61 |
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62 let s:term_vim = {} |
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63 |
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64 func s:term_vim.start(...) abort |
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65 let self.buf = term_start([GetVimProg()] + a:000) |
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66 let self.job = term_getjob(self.buf) |
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67 call WaitFor({-> job_status(self.job) ==# 'run'}) |
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68 let self.pid = job_info(self.job).process |
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69 endfunc |
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70 |
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71 func s:term_vim.stop() abort |
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72 call term_sendkeys(self.buf, ":qall!\<CR>") |
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73 call WaitFor({-> job_status(self.job) ==# 'dead'}) |
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74 exe self.buf . 'bwipe!' |
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75 endfunc |
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76 |
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77 func s:vim_new() abort |
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78 return copy(s:term_vim) |
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79 endfunc |
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80 |
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81 func Test_memory_func_capture_vargs() |
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82 " Case: if a local variable captures a:000, funccall object will be free |
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83 " just after it finishes. |
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84 let testfile = 'Xtest.vim' |
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85 call writefile([ |
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86 \ 'func s:f(...)', |
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87 \ ' let x = a:000', |
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88 \ 'endfunc', |
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89 \ 'for _ in range(10000)', |
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90 \ ' call s:f(0)', |
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91 \ 'endfor', |
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92 \ ], testfile) |
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93 |
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94 let vim = s:vim_new() |
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95 call vim.start('--clean', '-c', 'set noswapfile', testfile) |
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96 let before = s:monitor_memory_usage(vim.pid).last |
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97 |
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98 call term_sendkeys(vim.buf, ":so %\<CR>") |
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99 call WaitFor({-> term_getcursor(vim.buf)[0] == 1}) |
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100 let after = s:monitor_memory_usage(vim.pid) |
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101 |
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102 " Estimate the limit of max usage as 2x initial usage. |
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103 call assert_inrange(before, 2 * before, after.max) |
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104 " In this case, garbase collecting is not needed. |
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105 call assert_equal(after.last, after.max) |
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106 |
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107 call vim.stop() |
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108 call delete(testfile) |
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109 endfunc |
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110 |
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111 func Test_memory_func_capture_lvars() |
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112 " Case: if a local variable captures l: dict, funccall object will not be |
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113 " free until garbage collector runs, but after that memory usage doesn't |
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114 " increase so much even when rerun Xtest.vim since system memory caches. |
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115 let testfile = 'Xtest.vim' |
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116 call writefile([ |
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117 \ 'func s:f()', |
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118 \ ' let x = l:', |
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119 \ 'endfunc', |
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120 \ 'for _ in range(10000)', |
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121 \ ' call s:f()', |
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122 \ 'endfor', |
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123 \ ], testfile) |
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124 |
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125 let vim = s:vim_new() |
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126 call vim.start('--clean', '-c', 'set noswapfile', testfile) |
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127 let before = s:monitor_memory_usage(vim.pid).last |
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128 |
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129 call term_sendkeys(vim.buf, ":so %\<CR>") |
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130 call WaitFor({-> term_getcursor(vim.buf)[0] == 1}) |
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131 let after = s:monitor_memory_usage(vim.pid) |
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132 |
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133 " Rerun Xtest.vim. |
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134 for _ in range(3) |
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135 call term_sendkeys(vim.buf, ":so %\<CR>") |
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136 call WaitFor({-> term_getcursor(vim.buf)[0] == 1}) |
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137 let last = s:monitor_memory_usage(vim.pid).last |
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138 endfor |
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139 |
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140 " The usage may be a bit less than the last value |
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141 let lower = before * 8 / 10 |
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142 call assert_inrange(lower, after.max + (after.last - before), last) |
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143 |
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144 call vim.stop() |
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145 call delete(testfile) |
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146 endfunc |