Added a bug to track this: https://bugzilla.clamav.net/show_bug.cgi?id=5678
On Wed, Aug 22, 2012 at 12:08 PM, Nick Johnson <npjoh...@cs.princeton.edu>wrote: > Hello, > > If you are managing a large number of machines, jitter helps spread > freshclam's network traffic over time so the machines don't all hit > the network simultaneously. > > Here is a patch to add jitter to freshclam's update period. It adds a > random number of seconds in [0, jitter) to the bigsleep. It adds a > configuration option "Jitter" (-j, --jitter) to freshclam. The > default value is zero seconds, which will cause no change to most > users. > > Thank you, > N > > > $ diff -w clamav-0.97.5-original/freshclam/freshclam.c > clamav-0.97.5/freshclam/freshclam.c > 156a157 > > mprintf(" --jitter=#n -j #n random jitter on > check period, in seconds\n"); > 244a246,248 > > /* Seed random number generator (for Jitter) */ > > srand(time(0)); > > > 429a434 > > int jitter; > 455a461,467 > > jitter = optget(opts, "Jitter")->numarg; > > if( jitter < 0 ) { > > logg("^Jitter must be a non-negative integer number of seconds."); > > optfree(opts); > > return 41; > > } > > > 501a514,516 > > if( jitter > 0 ) > > sleep(bigsleep + (rand() % jitter) ); > > else > 505a521,522 > > if( jitter > 0 ) > > wakeup += rand() % jitter; > > $ diff -w clamav-0.97.5-original/shared/ clamav-0.97.5/shared/ > diff -w clamav-0.97.5-original/shared/optparser.c > clamav-0.97.5/shared/optparser.c > 365a366 > > { "Jitter", "jitter", 'j', TYPE_NUMBER, MATCH_NUMBER, 12, NULL, 0, > OPT_FRESHCLAM, "This option adds random jitter to freshclam's update > period.", "0" }, > > > -- > Nick Johnson > _______________________________________________ > http://lurker.clamav.net/list/clamav-devel.html > Please submit your patches to our Bugzilla: http://bugs.clamav.net > _______________________________________________ http://lurker.clamav.net/list/clamav-devel.html Please submit your patches to our Bugzilla: http://bugs.clamav.net