I do have 8 threads running, and I compiled with the following configure, is this correct? ./configure --without-pthreads --without-solaris-threads --with-libevent I also made this change to the config: outgoing-range: 2048 num-queries-per-thread: 2048 8 threads: #ps ax | grep unbound 24740 ? Ss 0:00 unbound -c /usr/local/etc/unbound/unbound.conf 24741 ? S 0:00 unbound -c /usr/local/etc/unbound/unbound.conf 24742 ? S 0:00 unbound -c /usr/local/etc/unbound/unbound.conf 24743 ? S 0:00 unbound -c /usr/local/etc/unbound/unbound.conf 24744 ? S 0:00 unbound -c /usr/local/etc/unbound/unbound.conf 24745 ? S 0:00 unbound -c /usr/local/etc/unbound/unbound.conf 24746 ? S 0:00 unbound -c /usr/local/etc/unbound/unbound.conf 24747 ? S 0:00 unbound -c /usr/local/etc/unbound/unbound.conf Logs start to finish after config change: [1223534119] unbound[24662:0] info: start of service (unbound 1.0.2). [1223534121] unbound[24663:1] error: accept failed: Resource temporarily unavailable [1223534121] unbound[24663:1] info: remote address is (inet_ntop error) port 0 [1223534122] unbound[24663:1] error: accept failed: Resource temporarily unavailable [1223534122] unbound[24663:1] info: remote address is (inet_ntop error) port 0 [1223534122] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534122] unbound[24662:0] info: remote address is 72.249.76.123 port 53468 [1223534122] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534122] unbound[24662:0] info: remote address is 72.249.76.123 port 53475 [1223534124] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534124] unbound[24662:0] info: remote address is 72.249.76.123 port 53730 [1223534124] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534124] unbound[24662:0] info: remote address is 72.249.76.123 port 53761 [1223534167] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534167] unbound[24662:0] info: remote address is 72.249.76.123 port 55893 [1223534185] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534185] unbound[24662:0] info: remote address is 72.249.76.123 port 41715 [1223534192] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534192] unbound[24662:0] info: remote address is 72.249.76.123 port 55950 [1223534196] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534196] unbound[24662:0] info: remote address is 72.249.76.123 port 41823 [1223534196] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534196] unbound[24662:0] info: remote address is 72.249.76.123 port 41823 [1223534226] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534226] unbound[24662:0] info: remote address is 72.249.76.123 port 42083 [1223534234] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534234] unbound[24662:0] info: remote address is 72.249.76.123 port 42105 [1223534240] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534240] unbound[24662:0] info: remote address is 72.249.76.123 port 42119 [1223534266] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534266] unbound[24662:0] info: remote address is 72.249.76.123 port 42347 [1223534267] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534267] unbound[24662:0] info: remote address is 72.249.76.123 port 42355 [1223534280] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534280] unbound[24662:0] info: remote address is 72.249.76.123 port 42413 [1223534286] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534286] unbound[24662:0] info: remote address is 72.249.76.123 port 42433 [1223534286] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534286] unbound[24662:0] info: remote address is 72.249.76.123 port 42433 [1223534311] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534311] unbound[24662:0] info: remote address is 207.210.234.34 port 45114 [1223534311] unbound[24669:7] error: accept failed: Resource temporarily unavailable [1223534311] unbound[24669:7] info: remote address is 72.249.19.195 port 42103 [1223534311] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534311] unbound[24662:0] info: remote address is 207.210.234.34 port 45114 [1223534311] unbound[24667:5] error: accept failed: Resource temporarily unavailable [1223534311] unbound[24667:5] info: remote address is 72.249.76.123 port 42477 [1223534317] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534317] unbound[24662:0] info: remote address is 72.249.76.123 port 42516 [1223534323] unbound[24662:0] error: accept failed: Resource temporarily unavailable [1223534323] unbound[24662:0] info: remote address is 72.249.26.99 port 59362 [1223534347] unbound[24662:0] info: service stopped (unbound 1.0.2). [1223534347] unbound[24662:0] info: server stats for thread 0: 95858 queries, 57619 answers from cache, 38239 recursions [1223534347] unbound[24662:0] info: server stats for thread 0: requestlist max 2056 avg 1508.5 exceeded 15582 [1223534347] unbound[24662:0] info: average recursion processing time 3.076592 sec [1223534347] unbound[24662:0] info: histogram of recursion processing times [1223534347] unbound[24662:0] info: [25%]=0.00555758 median[50%]=0.0232741 [75%]=0.118504 [1223534347] unbound[24662:0] info: lower(secs) upper(secs) recursions [1223534347] unbound[24662:0] info: 0.000000 0.000001 2021 [1223534347] unbound[24662:0] info: 0.000256 0.000512 3 [1223534347] unbound[24662:0] info: 0.000512 0.001024 40 [1223534347] unbound[24662:0] info: 0.001024 0.002048 263 [1223534347] unbound[24662:0] info: 0.002048 0.004096 347 [1223534347] unbound[24662:0] info: 0.004096 0.008192 329 [1223534347] unbound[24662:0] info: 0.008192 0.016384 474 [1223534347] unbound[24662:0] info: 0.016384 0.032768 684 [1223534347] unbound[24662:0] info: 0.032768 0.065536 4596 [1223534347] unbound[24662:0] info: 0.065536 0.131072 3165 [1223534347] unbound[24662:0] info: 0.131072 0.262144 3207 [1223534347] unbound[24662:0] info: 0.262144 0.524288 2340 [1223534347] unbound[24662:0] info: 0.524288 1.000000 742 [1223534347] unbound[24662:0] info: 1.000000 2.000000 288 [1223534347] unbound[24662:0] info: 2.000000 4.000000 205 [1223534347] unbound[24662:0] info: 4.000000 8.000000 167 [1223534347] unbound[24662:0] info: 8.000000 16.000000 120 [1223534347] unbound[24662:0] info: 16.000000 32.000000 94 [1223534347] unbound[24662:0] info: 32.000000 64.000000 207 [1223534347] unbound[24662:0] info: 64.000000 128.000000 358 [1223534347] unbound[24662:0] info: 128.000000 256.000000 112