Maintained by: NLnet Labs

[Unbound-users] Unbound issues

Rod Taylor
Tue Jan 19 23:15:13 CET 2010


We are trying unbound out. Machine is quad CPU with 16GB ram. I'm
picking on thread 2 because it shows the issue best as it seems to
receive up to 6 times as many queries as the other 3 threads. As you
can see, the time to execute climbs gradually through the period and
starts to "exceed" allowed limits about mid-way down the stats results
shown here.

Config bits.
server:
	verbosity: 1
	statistics-interval: 300
	statistics-cumulative: yes
	extended-statistics: no
	num-threads: 4
	outgoing-range: 2048
	msg-cache-size: 3G
	msg-cache-slabs: 8
	num-queries-per-thread: 2048
	jostle-timeout: 1000
	so-rcvbuf: 8M
	rrset-cache-size: 6G
	rrset-cache-slabs: 8
	cache-min-ttl: 7776000
	harden-glue: yes
	harden-dnssec-stripped: yes
	harden-referral-path: yes
	use-caps-for-id: yes
	unwanted-reply-threshold: 10000000
	val-clean-additional: yes
	val-permissive-mode: no
	key-cache-slabs: 8
	neg-cache-size: 1g


Below are snippets from the statistics taken roughly every 5 minutes
from startup over a period of 7 hours.

server stats for thread 2: 420 queries, 284 answers from cache, 136 recursions
server stats for thread 2: requestlist max 21 avg 16.2647 exceeded 0
server stats for thread 2: 3189 queries, 3053 answers from cache, 136 recursions
server stats for thread 2: requestlist max 21 avg 16.2647 exceeded 0
server stats for thread 2: 3375 queries, 3239 answers from cache, 136 recursions
server stats for thread 2: requestlist max 21 avg 16.2647 exceeded 0
server stats for thread 2: 4560 queries, 4424 answers from cache, 136 recursions
server stats for thread 2: requestlist max 21 avg 16.2647 exceeded 0
server stats for thread 2: 32129 queries, 13211 answers from cache,
18918 recursions
server stats for thread 2: requestlist max 1196 avg 620.017 exceeded 0
server stats for thread 2: 227635 queries, 63600 answers from cache,
164035 recursions
server stats for thread 2: requestlist max 1196 avg 605.375 exceeded 0
server stats for thread 2: 412374 queries, 113701 answers from cache,
298673 recursions
server stats for thread 2: requestlist max 1196 avg 649.591 exceeded 0
server stats for thread 2: 591627 queries, 164560 answers from cache,
427067 recursions
server stats for thread 2: requestlist max 1196 avg 685.99 exceeded 0
server stats for thread 2: 762418 queries, 214876 answers from cache,
547542 recursions
server stats for thread 2: requestlist max 1196 avg 725.279 exceeded 0
server stats for thread 2: 925072 queries, 265281 answers from cache,
659791 recursions
server stats for thread 2: requestlist max 1196 avg 766.182 exceeded 0
server stats for thread 2: 1082217 queries, 315509 answers from cache,
766708 recursions
server stats for thread 2: requestlist max 1213 avg 803.033 exceeded 0
server stats for thread 2: 1240514 queries, 367629 answers from cache,
872885 recursions
server stats for thread 2: requestlist max 1336 avg 841.245 exceeded 0
server stats for thread 2: 1399258 queries, 421640 answers from cache,
977618 recursions
server stats for thread 2: requestlist max 1360 avg 874.701 exceeded 0
server stats for thread 2: 1555372 queries, 476520 answers from cache,
1078852 recursions
server stats for thread 2: requestlist max 1390 avg 908.038 exceeded 0
server stats for thread 2: 1714148 queries, 534429 answers from cache,
1179719 recursions
server stats for thread 2: requestlist max 1478 avg 942.845 exceeded 0
server stats for thread 2: 1877100 queries, 595948 answers from cache,
1281152 recursions
server stats for thread 2: requestlist max 1603 avg 977.634 exceeded 0
server stats for thread 2: 2046507 queries, 661158 answers from cache,
1385349 recursions
server stats for thread 2: requestlist max 1661 avg 1018.34 exceeded 0
server stats for thread 2: 2230528 queries, 734070 answers from cache,
1496458 recursions
server stats for thread 2: requestlist max 1792 avg 1063.32 exceeded 0
server stats for thread 2: 2420948 queries, 811552 answers from cache,
1609396 recursions
server stats for thread 2: requestlist max 1876 avg 1106.96 exceeded 0
server stats for thread 2: 2627825 queries, 898335 answers from cache,
1729490 recursions
server stats for thread 2: requestlist max 1948 avg 1152.9 exceeded 0
server stats for thread 2: 2847864 queries, 993012 answers from cache,
1854852 recursions
server stats for thread 2: requestlist max 2010 avg 1198.99 exceeded 0
server stats for thread 2: 3075730 queries, 1093945 answers from
cache, 1981785 recursions
server stats for thread 2: requestlist max 2088 avg 1244.61 exceeded 0
server stats for thread 2: 3320791 queries, 1204754 answers from
cache, 2116037 recursions
server stats for thread 2: requestlist max 2129 avg 1289.26 exceeded 0
server stats for thread 2: 3593773 queries, 1329840 answers from
cache, 2263933 recursions
server stats for thread 2: requestlist max 2129 avg 1333.68 exceeded 0
server stats for thread 2: 3877901 queries, 1462415 answers from
cache, 2415486 recursions
server stats for thread 2: requestlist max 2340 avg 1381.81 exceeded 0
server stats for thread 2: 4169522 queries, 1601187 answers from
cache, 2568335 recursions
server stats for thread 2: requestlist max 2340 avg 1424.49 exceeded 0
server stats for thread 2: 4458010 queries, 1741370 answers from
cache, 2716640 recursions
server stats for thread 2: requestlist max 2340 avg 1461.19 exceeded 0
server stats for thread 2: 4755954 queries, 1887372 answers from
cache, 2868582 recursions
server stats for thread 2: requestlist max 2340 avg 1497.73 exceeded 0
server stats for thread 2: 5054311 queries, 2035933 answers from
cache, 3018378 recursions
server stats for thread 2: requestlist max 2392 avg 1534.58 exceeded 0
server stats for thread 2: 5362834 queries, 2191665 answers from
cache, 3171169 recursions
server stats for thread 2: requestlist max 2438 avg 1571.12 exceeded 0
server stats for thread 2: 5669256 queries, 2347984 answers from
cache, 3321272 recursions
server stats for thread 2: requestlist max 2463 avg 1604.42 exceeded 0
server stats for thread 2: 5975214 queries, 2506445 answers from
cache, 3468769 recursions
server stats for thread 2: requestlist max 2463 avg 1635.18 exceeded 0
server stats for thread 2: 6279369 queries, 2665381 answers from
cache, 3613988 recursions
server stats for thread 2: requestlist max 2591 avg 1664.99 exceeded 0
server stats for thread 2: 6577860 queries, 2822890 answers from
cache, 3754970 recursions
server stats for thread 2: requestlist max 2591 avg 1691.34 exceeded 0
server stats for thread 2: 6879207 queries, 2983199 answers from
cache, 3896008 recursions
server stats for thread 2: requestlist max 2591 avg 1717.35 exceeded 0
server stats for thread 2: 7175981 queries, 3141895 answers from
cache, 4034086 recursions
server stats for thread 2: requestlist max 2607 avg 1744.31 exceeded 0
server stats for thread 2: 7468573 queries, 3300361 answers from
cache, 4168212 recursions
server stats for thread 2: requestlist max 2607 avg 1768.51 exceeded 0
server stats for thread 2: 7763213 queries, 3459687 answers from
cache, 4303526 recursions
server stats for thread 2: requestlist max 2615 avg 1792.17 exceeded 275
server stats for thread 2: 8049494 queries, 3615698 answers from
cache, 4433796 recursions
server stats for thread 2: requestlist max 2649 avg 1814.33 exceeded 391
server stats for thread 2: 8339874 queries, 3771948 answers from
cache, 4567926 recursions
server stats for thread 2: requestlist max 2673 avg 1836.72 exceeded 9291
server stats for thread 2: 8675486 queries, 3928361 answers from
cache, 4747125 recursions
server stats for thread 2: requestlist max 2673 avg 1865.03 exceeded 79527
server stats for thread 2: 9013544 queries, 4065706 answers from
cache, 4947838 recursions
server stats for thread 2: requestlist max 2673 avg 1894.08 exceeded 197196
server stats for thread 2: 9325951 queries, 4184820 answers from
cache, 5141131 recursions
server stats for thread 2: requestlist max 2673 avg 1919.66 exceeded 320054
server stats for thread 2: 9649570 queries, 4311387 answers from
cache, 5338183 recursions
server stats for thread 2: requestlist max 2673 avg 1943.58 exceeded 442555
server stats for thread 2: 9883086 queries, 4386420 answers from
cache, 5496666 recursions
server stats for thread 2: requestlist max 2673 avg 1961.76 exceeded 567156
server stats for thread 2: 10187789 queries, 4502652 answers from
cache, 5685137 recursions
server stats for thread 2: requestlist max 2673 avg 1982.28 exceeded 690181
server stats for thread 2: 10527437 queries, 4638576 answers from
cache, 5888861 recursions
server stats for thread 2: requestlist max 2673 avg 2002.7 exceeded 818783
server stats for thread 2: 10845189 queries, 4760934 answers from
cache, 6084255 recursions
server stats for thread 2: requestlist max 2673 avg 2020.86 exceeded 946745
server stats for thread 2: 11084550 queries, 4838916 answers from
cache, 6245634 recursions
server stats for thread 2: requestlist max 2673 avg 2034.8 exceeded 1073714
server stats for thread 2: 11402798 queries, 4959856 answers from
cache, 6442942 recursions
server stats for thread 2: requestlist max 2673 avg 2051.26 exceeded 1202308
server stats for thread 2: 11722778 queries, 5082975 answers from
cache, 6639803 recursions
server stats for thread 2: requestlist max 2673 avg 2066.72 exceeded 1330516
server stats for thread 2: 11993865 queries, 5179640 answers from
cache, 6814225 recursions
server stats for thread 2: requestlist max 2673 avg 2079.3 exceeded 1457073
server stats for thread 2: 12286524 queries, 5286754 answers from
cache, 6999770 recursions
server stats for thread 2: requestlist max 2673 avg 2091.88 exceeded 1588787
server stats for thread 2: 12569883 queries, 5390261 answers from
cache, 7179622 recursions
server stats for thread 2: requestlist max 2673 avg 2103.54 exceeded 1717405
server stats for thread 2: 12833143 queries, 5480857 answers from
cache, 7352286 recursions
server stats for thread 2: requestlist max 2673 avg 2114.34 exceeded 1848543
server stats for thread 2: 13088804 queries, 5566827 answers from
cache, 7521977 recursions
server stats for thread 2: requestlist max 2673 avg 2124.56 exceeded 1979982
server stats for thread 2: 13339028 queries, 5649428 answers from
cache, 7689600 recursions
server stats for thread 2: requestlist max 2673 avg 2134.2 exceeded 2112551
server stats for thread 2: 13589261 queries, 5731389 answers from
cache, 7857872 recursions
server stats for thread 2: requestlist max 2673 avg 2143.23 exceeded 2246431
server stats for thread 2: 13831526 queries, 5809218 answers from
cache, 8022308 recursions
server stats for thread 2: requestlist max 2673 avg 2151.68 exceeded 2380025
server stats for thread 2: 14074045 queries, 5885578 answers from
cache, 8188467 recursions
server stats for thread 2: requestlist max 2673 avg 2159.78 exceeded 2517341
server stats for thread 2: 14310994 queries, 5958194 answers from
cache, 8352800 recursions
server stats for thread 2: requestlist max 2673 avg 2167.59 exceeded 2656417
server stats for thread 2: 14542656 queries, 6028031 answers from
cache, 8514625 recursions
server stats for thread 2: requestlist max 2673 avg 2174.91 exceeded 2795338
server stats for thread 2: 14768848 queries, 6093829 answers from
cache, 8675019 recursions
server stats for thread 2: requestlist max 2673 avg 2181.93 exceeded 2936464
server stats for thread 2: 14993464 queries, 6158626 answers from
cache, 8834838 recursions
server stats for thread 2: requestlist max 2673 avg 2188.48 exceeded 3079132
server stats for thread 2: 15216858 queries, 6222283 answers from
cache, 8994575 recursions
server stats for thread 2: requestlist max 2673 avg 2194.84 exceeded 3222538
server stats for thread 2: 15440568 queries, 6282954 answers from
cache, 9157614 recursions
server stats for thread 2: requestlist max 2673 avg 2201.12 exceeded 3372315
server stats for thread 2: 15663324 queries, 6344440 answers from
cache, 9318884 recursions
server stats for thread 2: requestlist max 2673 avg 2207.11 exceeded 3520766
server stats for thread 2: 15888324 queries, 6406005 answers from
cache, 9482319 recursions
server stats for thread 2: requestlist max 2673 avg 2212.97 exceeded 3671367
server stats for thread 2: 16110454 queries, 6465240 answers from
cache, 9645214 recursions
server stats for thread 2: requestlist max 2673 avg 2218.59 exceeded 3824213
server stats for thread 2: 16332045 queries, 6523675 answers from
cache, 9808370 recursions
server stats for thread 2: requestlist max 2673 avg 2224.04 exceeded 3978297
server stats for thread 2: 16552213 queries, 6581148 answers from
cache, 9971065 recursions
server stats for thread 2: requestlist max 2673 avg 2229.27 exceeded 4132981
server stats for thread 2: 16772511 queries, 6639153 answers from
cache, 10133358 recursions
server stats for thread 2: requestlist max 2673 avg 2234.27 exceeded 4287371
server stats for thread 2: 16992902 queries, 6698239 answers from
cache, 10294663 recursions
server stats for thread 2: requestlist max 2673 avg 2239.12 exceeded 4439600
server stats for thread 2: 17213660 queries, 6756507 answers from
cache, 10457153 recursions
server stats for thread 2: requestlist max 2673 avg 2243.8 exceeded 4594324
server stats for thread 2: 17432380 queries, 6812701 answers from
cache, 10619679 recursions
server stats for thread 2: requestlist max 2673 avg 2248.35 exceeded 4750633
server stats for thread 2: 17650889 queries, 6868541 answers from
cache, 10782348 recursions
server stats for thread 2: requestlist max 2673 avg 2252.86 exceeded 4907895

Thanks in advance for any suggestion you can give.