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4 | # the reset/swap policy of the server. |
4 | # the reset/swap policy of the server. |
5 | # it also contains the map prefetching logic |
5 | # it also contains the map prefetching logic |
6 | |
6 | |
7 | #our $DEACTIVATE_TIMEOUT = 20; # number of seconds after which maps get deactivated to save cpu |
7 | #our $DEACTIVATE_TIMEOUT = 20; # number of seconds after which maps get deactivated to save cpu |
8 | our $SWAP_TIMEOUT = $cf::CFG{swap_timeout} || 300; # number of seconds after which inactive maps get swapped out |
8 | our $SWAP_TIMEOUT = $cf::CFG{swap_timeout} || 300; # number of seconds after which inactive maps get swapped out |
9 | our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || .8; # time the map scheduler sleeps between runs |
9 | our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || 5; # time the map scheduler sleeps between runs |
10 | our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds |
10 | our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds |
11 | our $SWAP_LOAD1 = $cf::CFG{swap_load1} || .1; # start aggressively swapping at this load |
11 | our $SWAP_LOAD1 = $cf::CFG{swap_load1} || .1; # start aggressively swapping at this load |
12 | our $SWAP_LOAD2 = $cf::CFG{swap_load2} || .4; # swap as fast as possible at this load |
12 | our $SWAP_LOAD2 = $cf::CFG{swap_load2} || .6; # swap as fast as possible at this load |
13 | |
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14 | warn "load1 ", $SWAP_LOAD1;#d# |
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15 | warn "load2 ", $SWAP_LOAD2;#d# |
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16 | |
13 | |
17 | cf::async_ext { |
14 | cf::async_ext { |
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15 | $Coro::current->{desc} = "startup map scanner"; |
18 | $Coro::current->prio (Coro::PRIO_MIN); |
16 | $Coro::current->prio (Coro::PRIO_MIN); |
19 | |
17 | |
20 | # load the header of swapped-out maps. |
18 | # load the header of swapped-out maps. |
21 | # this is not a correctness issue, it simply saves diskspace |
19 | # this is not a correctness issue, it simply saves diskspace |
22 | # because old files will get cleaned up on reset time |
20 | # because old files will get cleaned up on reset time |
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53 | } |
51 | } |
54 | } |
52 | } |
55 | }; |
53 | }; |
56 | |
54 | |
57 | our $SCHEDULER = cf::async_ext { |
55 | our $SCHEDULER = cf::async_ext { |
58 | my $timer = Coro::Event->timer (after => 1); |
56 | $Coro::current->{desc} = "map scheduler"; |
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57 | $Coro::current->prio (Coro::PRIO_MAX); |
59 | |
58 | |
60 | while () { |
59 | while () { |
61 | $timer->interval ($SCHEDULE_INTERVAL); |
60 | if ($cf::LOADAVG > $SWAP_LOAD2) { |
62 | $timer->next unless $cf::LOADAVG > $SWAP_LOAD2; |
61 | cf::wait_for_tick; |
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62 | } else { |
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63 | Coro::EV::timer_once $SCHEDULE_INTERVAL; |
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64 | } |
63 | |
65 | |
64 | # this weird form of iteration over values is used because |
66 | # this weird form of iteration over values is used because |
65 | # the hash changes underneath us frequently, and for |
67 | # the hash changes underneath us frequently, and for |
66 | # keeps a direct reference to the value without (in 5.8 perls) |
68 | # keeps a direct reference to the value without (in 5.8 perls) |
67 | # keeping a reference, so this is prone to crashes or worse. |
69 | # keeping a reference, so this is prone to crashes or worse. |
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78 | # $map->deactivate; |
80 | # $map->deactivate; |
79 | # delete $map->{active}; |
81 | # delete $map->{active}; |
80 | # } |
82 | # } |
81 | if ($map->should_reset) { |
83 | if ($map->should_reset) { |
82 | $map->reset; |
84 | $map->reset; |
83 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
85 | } elsif ($map->in_memory == cf::MAP_ACTIVE) { |
84 | my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, 0), 0, $SWAP_TIMEOUT; |
86 | my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, $cf::TICK * 1.5), |
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87 | $cf::TICK * 1.5, $SWAP_TIMEOUT; |
85 | |
88 | |
86 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
89 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
87 | $map->swap_out; |
90 | $map->swap_out; |
88 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
91 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
89 | $map->save; |
92 | $map->save; |