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Comparing deliantra/server/ext/map-scheduler.ext (file contents):
Revision 1.40 by root, Sat Jul 28 14:32:21 2007 UTC vs.
Revision 1.45 by root, Thu Oct 11 00:34:31 2007 UTC

… …
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
8our $SWAP_TIMEOUT = $cf::CFG{swap_timeout} || 300; # number of seconds after which inactive maps get swapped out 8our $SWAP_TIMEOUT = $cf::CFG{swap_timeout} || 300; # number of seconds after which inactive maps get swapped out
9our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || .8; # time the map scheduler sleeps between runs 9our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || 2; # time the map scheduler sleeps between runs
10our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds 10our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds
11our $SWAP_LOAD1 = $cf::CFG{swap_load1} || .1; # start aggressively swapping at this load 11our $SWAP_LOAD1 = $cf::CFG{swap_load1} || .1; # start aggressively swapping at this load
12our $SWAP_LOAD2 = $cf::CFG{swap_load2} || .4; # swap as fast as possible at this load 12our $SWAP_LOAD2 = $cf::CFG{swap_load2} || .4; # swap as fast as possible at this load
13 13
14cf::async_ext { 14cf::async_ext {
15 $Coro::current->{desc} = "startup map scanner";
15 $Coro::current->prio (Coro::PRIO_MIN); 16 $Coro::current->prio (Coro::PRIO_MIN);
16 17
17 # load the header of swapped-out maps. 18 # load the header of swapped-out maps.
18 # this is not a correctness issue, it simply saves diskspace 19 # this is not a correctness issue, it simply saves diskspace
19 # 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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50 } 51 }
51 } 52 }
52}; 53};
53 54
54our $SCHEDULER = cf::async_ext { 55our $SCHEDULER = cf::async_ext {
56 $Coro::current->{desc} = "map scheduler";
57 $Coro::current->prio (Coro::PRIO_MAX);
55 my $timer = Coro::Event->timer (after => 1); 58 my $timer = Coro::Event->timer (data => cf::WF_AUTOCANCEL);
56 59
57 while () { 60 while () {
61 if ($cf::LOADAVG > $SWAP_LOAD2) {
62 $timer->interval (0.05);
63 $timer->next;
64 cf::wait_for_tick;
65 } else {
58 $timer->interval ($SCHEDULE_INTERVAL); 66 $timer->interval ($SCHEDULE_INTERVAL);
59 $timer->next unless $cf::LOADAVG > $SWAP_LOAD2; 67 $timer->next;
68 }
60 69
61 # this weird form of iteration over values is used because 70 # this weird form of iteration over values is used because
62 # the hash changes underneath us frequently, and for 71 # the hash changes underneath us frequently, and for
63 # keeps a direct reference to the value without (in 5.8 perls) 72 # keeps a direct reference to the value without (in 5.8 perls)
64 # keeping a reference, so this is prone to crashes or worse. 73 # keeping a reference, so this is prone to crashes or worse.
… …
76# delete $map->{active}; 85# delete $map->{active};
77# } 86# }
78 if ($map->should_reset) { 87 if ($map->should_reset) {
79 $map->reset; 88 $map->reset;
80 } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { 89 } elsif ($map->in_memory == cf::MAP_IN_MEMORY) {
81 my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, 0), 0, $SWAP_TIMEOUT; 90 my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, $cf::TICK * 1.5),
91 $cf::TICK * 1.5, $SWAP_TIMEOUT;
82 92
83 if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { 93 if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) {
84 $map->swap_out; 94 $map->swap_out;
85 } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { 95 } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) {
86 $map->save; 96 $map->save;

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