diff options
Diffstat (limited to 'source3/nmbd/nmbd_browsesync.c')
| -rw-r--r-- | source3/nmbd/nmbd_browsesync.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/source3/nmbd/nmbd_browsesync.c b/source3/nmbd/nmbd_browsesync.c index 8136568c6a..b1fb4e631f 100644 --- a/source3/nmbd/nmbd_browsesync.c +++ b/source3/nmbd/nmbd_browsesync.c @@ -556,12 +556,17 @@ void collect_all_workgroup_names_from_wins_server(time_t t) /**************************************************************************** If we are a domain master browser on the unicast subnet, do a regular sync - with all other DMBs that we know of on that subnet + with all other DMBs that we know of on that subnet. + +To prevent exponential network traffic with large numbers of workgroups +we use a randomised system where sync probability is inversely proportional +to the number of known workgroups **************************************************************************/ void sync_all_dmbs(time_t t) { static time_t lastrun = 0; struct work_record *work; + int count=0; /* Only do this if we are using a WINS server. */ if(we_are_a_wins_client() == False) @@ -575,13 +580,24 @@ void sync_all_dmbs(time_t t) if (!AM_DOMAIN_MASTER_BROWSER(work)) return; - if ((lastrun != 0) && (t < lastrun + (15 * 60))) + if ((lastrun != 0) && (t < lastrun + (5 * 60))) return; + /* count how many syncs we might need to do */ + for (work=unicast_subnet->workgrouplist; work; work = work->next) { + if (strcmp(global_myworkgroup, work->work_group) && + !ip_equal(work->dmb_addr, ipzero)) { + count++; + } + } + /* sync with a probability of 1/count */ for (work=unicast_subnet->workgrouplist; work; work = work->next) { if (strcmp(global_myworkgroup, work->work_group) && !ip_equal(work->dmb_addr, ipzero)) { + + if (((unsigned)random()) % count != 0) continue; + lastrun = t; DEBUG(3,("initiating DMB<->DMB sync with %s(%s)\n", |