[Samba] samba4 ldap high load and port queue overflow
Yuriy Tabolin
tabolin at speechpro.com
Thu Nov 26 08:52:57 UTC 2015
25.11.2015 10:59, Andrew Bartlett пишет:
> On Tue, 2015-11-24 at 17:48 +0300, Yuriy Tabolin wrote:
>> Thanks for answer. I am very sad to see that.
>> I had examined samba behavior with tracer and had seen too many poll,
>> fcntl and stat system calls by samba task[ldapsrv] process
>>
>> Elapsed Times for PID 1423,
>>
>> SYSCALL TIME (ns)
>> dup 2653
>> flock 5811
>> lseek 33513
>> geteuid 42747
>> getpid 63819
>> getpeername 85480
>> getsockname 151683
>> socket 237632
>> accept 311871
>> fstat 404420
>> madvise 452120
>> readv 601524
>> mmap 858391
>> writev 910337
>> gettimeofday 929595
>> read 1064811
>> close 1270401
>> open 1733182
>> lstat 1938394
>> bind 1939462
>> unlink 2074873
>> munmap 2569299
>> mkdir 3539965
>> clock_gettime 5662586
>> stat 7543724
>> fcntl 74322331
>> poll 5393911015
> That poll() count is very high, I do wonder if something isn't working
> right with your system. I would have expected it to be more in line
> with fcntl(), which we use a lot of in TDB.
I think that poll calls are too much too. Trace look that
fcntl(13,F_SETLKW,0x7fffffffdda8) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffde48) = 0 (0x0)
writev(0x85,0x81019cc90,0x1,0x1,0xffffffffea994e98,0x810197010) = 251 (0xfb)
gettimeofday({1448524674.289517 },0x0) = 0 (0x0)
gettimeofday({1448524674.289624 },0x0) = 0 (0x0)
poll({33/POLLIN|POLLHUP 32/POLLIN|POLLHUP 31/POLLIN|POLLHUP
30/POLLIN|POLLHUP 29/POLLIN|POLLHUP 28/POLLIN|POLLHUP 27/POLLIN|POLLHUP
26/POLLIN|POLLHUP 25/POLLIN|POLLHUP 24/POLLIN|POLLHUP 23/POLLIN|POLLHUP
22/POLLIN|POLLHUP 74/POLLIN|POLLHUP 73/POLLIN|POLLHUP 130/POLLIN|POLLHUP
129/POLLIN|POLLHUP 66/POLLIN|POLLHUP 65/POLLIN|POLLHUP 35/POLLIN|POLLHUP
34/POLLIN|POLLHUP 53/POLLIN|POLLHUP 54/POLLIN|POLLHUP 166/POLLIN|POLLHUP
165/POLLIN|POLLHUP 68/POLLIN|POLLHUP 67/POLLIN|POLLHUP 56/POLLIN|POLLHUP
55/POLLIN|POLLHUP 117/POLLIN|POLLHUP 118/POLLIN|POLLHUP
175/POLLIN|POLLHUP 176/POLLIN|POLLHUP 60/POLLIN|POLLHUP
59/POLLIN|POLLHUP 184/POLLIN|POLLHUP 183/POLLIN|POLLHUP
171/POLLIN|POLLHUP 172/POLLIN|POLLHUP 88/POLLIN|POLLHUP
87/POLLIN|POLLHUP 157/POLLIN|POLLHUP 158/POLLIN|POLLHUP
193/POLLIN|POLLHUP 194/POLLIN|POLLHUP 58/POLLIN|POLLHUP
57/POLLIN|POLLHUP 77/POLLIN|POLLHUP 78/POLLIN|POLLHUP 72/POLLIN|POLLHUP
71/POLLIN|POLLHUP 80/POLLIN|POLLHUP 79/POLLIN|POLLHUP 52/POLLIN|POLLHUP
51/POLLIN|POLLHUP 48/POLLIN|POLLHUP 47/POLLIN|POLLHUP 141/POLLIN|POLLHUP
142/POLLIN|POLLHUP 46/POLLIN|POLLHUP 45/POLLIN|POLLHUP 41/POLLIN|POLLHUP
42/POLLIN|POLLHUP 127/POLLIN|POLLHUP 128/POLLIN|POLLHUP
37/POLLIN|POLLHUP 38/POLLIN|POLLHUP 50/POLLIN|POLLHUP 49/POLLIN|POLLHUP
92/POLLIN|POLLHUP 91/POLLIN|POLLHUP 116/POLLIN|POLLHUP
115/POLLIN|POLLHUP 63/POLLIN|POLLHUP 64/POLLIN|POLLHUP 76/POLLIN|POLLHUP
75/POLLIN|POLLHUP 102/POLLIN|POLLHUP 101/POLLIN|POLLHUP
104/POLLIN|POLLHUP 103/POLLIN|POLLHUP 85/POLLIN|POLLHUP
86/POLLIN|POLLHUP 121/POLLIN|POLLHUP 122/POLLIN|POLLHUP
100/POLLIN|POLLHUP 99/POLLIN|POLLHUP 93/POLLIN|POLLHUP 94/POLLIN|POLLHUP
95/POLLIN|POLLHUP 96/POLLIN|POLLHUP 114/POLLIN|POLLHUP
113/POLLIN|POLLHUP 39/POLLIN|POLLHUP 40/POLLIN|POLLHUP 98/POLLIN|POLLHUP
97/POLLIN|POLLHUP 61/POLLIN|POLLHUP 62/POLLIN|POLLHUP 138/POLLIN|POLLHUP
137/POLLIN|POLLHUP 89/POLLIN|POLLHUP 90/POLLIN|POLLHUP
111/POLLIN|POLLHUP 112/POLLIN|POLLHUP 83/POLLIN|POLLHUP
84/POLLIN|POLLHUP 108/POLLIN|POLLHUP 107/POLLIN|POLLHUP
178/POLLIN|POLLHUP 177/POLLIN|POLLHUP 123/POLLIN|POLLHUP
124/POLLIN|POLLHUP 110/POLLIN|POLLHUP 109/POLLIN|POLLHUP
81/POLLIN|POLLHUP 82/POLLIN|POLLHUP 106/POLLIN|POLLHUP
105/POLLIN|POLLHUP 164/POLLIN|POLLHUP 163/POLLIN|POLLHUP
156/POLLIN|POLLHUP 155/POLLIN|POLLHUP 125/POLLIN|POLLHUP
126/POLLIN|POLLHUP 150/POLLIN|POLLHUP 149/POLLIN|POLLHUP
173/POLLIN|POLLHUP 174/POLLIN|POLLHUP 139/POLLIN|POLLHUP
140/POLLIN|POLLHUP 161/POLLIN|POLLHUP 162/POLLIN|POLLHUP
136/POLLIN|POLLHUP 135/POLLIN|POLLHUP 160/POLLIN|POLLHUP
159/POLLIN|POLLHUP 69/POLLIN|POLLHUP 70/POLLIN|POLLHUP
168/POLLIN|POLLHUP 167/POLLIN|POLLHUP 119/POLLIN|POLLHUP
120/POLLIN|POLLHUP 182/POLLIN|POLLHUP 181/POLLIN|POLLHUP
144/POLLIN|POLLHUP 143/POLLIN|POLLHUP 43/POLLIN|POLLHUP
44/POLLIN|POLLHUP 131/POLLIN|POLLHUP 132/POLLIN|POLLHUP
133/POLLIN|POLLHUP 134/POLLIN|POLLHUP},152,5114) = 1 (0x1)
readv(0x85,0x81019cc90,0x1,0x1,0x80860bd82,0x0) = 7 (0x7)
gettimeofday({1448524674.290357 },0x0) = 0 (0x0)
poll({33/POLLIN|POLLHUP 32/POLLIN|POLLHUP 31/POLLIN|POLLHUP
30/POLLIN|POLLHUP 29/POLLIN|POLLHUP 28/POLLIN|POLLHUP 27/POLLIN|POLLHUP
26/POLLIN|POLLHUP 25/POLLIN|POLLHUP 24/POLLIN|POLLHUP 23/POLLIN|POLLHUP
22/POLLIN|POLLHUP 74/POLLIN|POLLHUP 73/POLLIN|POLLHUP 130/POLLIN|POLLHUP
129/POLLIN|POLLHUP 66/POLLIN|POLLHUP 65/POLLIN|POLLHUP 35/POLLIN|POLLHUP
34/POLLIN|POLLHUP 53/POLLIN|POLLHUP 54/POLLIN|POLLHUP 166/POLLIN|POLLHUP
165/POLLIN|POLLHUP 68/POLLIN|POLLHUP 67/POLLIN|POLLHUP 56/POLLIN|POLLHUP
55/POLLIN|POLLHUP 117/POLLIN|POLLHUP 118/POLLIN|POLLHUP
175/POLLIN|POLLHUP 176/POLLIN|POLLHUP 60/POLLIN|POLLHUP
59/POLLIN|POLLHUP 184/POLLIN|POLLHUP 183/POLLIN|POLLHUP
171/POLLIN|POLLHUP 172/POLLIN|POLLHUP 88/POLLIN|POLLHUP
87/POLLIN|POLLHUP 157/POLLIN|POLLHUP 158/POLLIN|POLLHUP
193/POLLIN|POLLHUP 194/POLLIN|POLLHUP 58/POLLIN|POLLHUP
57/POLLIN|POLLHUP 77/POLLIN|POLLHUP 78/POLLIN|POLLHUP 72/POLLIN|POLLHUP
71/POLLIN|POLLHUP 80/POLLIN|POLLHUP 79/POLLIN|POLLHUP 52/POLLIN|POLLHUP
51/POLLIN|POLLHUP 48/POLLIN|POLLHUP 47/POLLIN|POLLHUP 141/POLLIN|POLLHUP
142/POLLIN|POLLHUP 46/POLLIN|POLLHUP 45/POLLIN|POLLHUP 41/POLLIN|POLLHUP
42/POLLIN|POLLHUP 127/POLLIN|POLLHUP 128/POLLIN|POLLHUP
37/POLLIN|POLLHUP 38/POLLIN|POLLHUP 50/POLLIN|POLLHUP 49/POLLIN|POLLHUP
92/POLLIN|POLLHUP 91/POLLIN|POLLHUP 116/POLLIN|POLLHUP
115/POLLIN|POLLHUP 63/POLLIN|POLLHUP 64/POLLIN|POLLHUP 76/POLLIN|POLLHUP
75/POLLIN|POLLHUP 102/POLLIN|POLLHUP 101/POLLIN|POLLHUP
104/POLLIN|POLLHUP 103/POLLIN|POLLHUP 85/POLLIN|POLLHUP
86/POLLIN|POLLHUP 121/POLLIN|POLLHUP 122/POLLIN|POLLHUP
100/POLLIN|POLLHUP 99/POLLIN|POLLHUP 93/POLLIN|POLLHUP 94/POLLIN|POLLHUP
95/POLLIN|POLLHUP 96/POLLIN|POLLHUP 114/POLLIN|POLLHUP
113/POLLIN|POLLHUP 39/POLLIN|POLLHUP 40/POLLIN|POLLHUP 98/POLLIN|POLLHUP
97/POLLIN|POLLHUP 61/POLLIN|POLLHUP 62/POLLIN|POLLHUP 138/POLLIN|POLLHUP
137/POLLIN|POLLHUP 89/POLLIN|POLLHUP 90/POLLIN|POLLHUP
111/POLLIN|POLLHUP 112/POLLIN|POLLHUP 83/POLLIN|POLLHUP
84/POLLIN|POLLHUP 108/POLLIN|POLLHUP 107/POLLIN|POLLHUP
178/POLLIN|POLLHUP 177/POLLIN|POLLHUP 123/POLLIN|POLLHUP
124/POLLIN|POLLHUP 110/POLLIN|POLLHUP 109/POLLIN|POLLHUP
81/POLLIN|POLLHUP 82/POLLIN|POLLHUP 106/POLLIN|POLLHUP
105/POLLIN|POLLHUP 164/POLLIN|POLLHUP 163/POLLIN|POLLHUP
156/POLLIN|POLLHUP 155/POLLIN|POLLHUP 125/POLLIN|POLLHUP
126/POLLIN|POLLHUP 150/POLLIN|POLLHUP 149/POLLIN|POLLHUP
173/POLLIN|POLLHUP 174/POLLIN|POLLHUP 139/POLLIN|POLLHUP
140/POLLIN|POLLHUP 161/POLLIN|POLLHUP 162/POLLIN|POLLHUP
136/POLLIN|POLLHUP 135/POLLIN|POLLHUP 160/POLLIN|POLLHUP
159/POLLIN|POLLHUP 69/POLLIN|POLLHUP 70/POLLIN|POLLHUP
168/POLLIN|POLLHUP 167/POLLIN|POLLHUP 119/POLLIN|POLLHUP
120/POLLIN|POLLHUP 182/POLLIN|POLLHUP 181/POLLIN|POLLHUP
144/POLLIN|POLLHUP 143/POLLIN|POLLHUP 43/POLLIN|POLLHUP
44/POLLIN|POLLHUP 131/POLLIN|POLLHUP 132/POLLIN|POLLHUP
133/POLLIN|POLLHUP 134/POLLIN|POLLHUP},152,5114) = 1 (0x1)
readv(0x85,0x81019cc90,0x1,0x1,0x80860bd82,0x0) = 129 (0x81)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffcd48) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffcde8) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffcc78) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffcd18) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffccc8) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffcd68) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffcbf8) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffcc98) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffcf48) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffcfe8) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffce78) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffcf18) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffc5e8) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffc688) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffc518) = 0 (0x0)
fcntl(14,F_SETLKW,0x7fffffffc5b8) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffcef8) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffcf98) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffce28) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffcec8) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffce78) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffcf18) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffcda8) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffce48) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffde78) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffdf18) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffdda8) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffde48) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffd518) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffd5b8) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffd448) = 0 (0x0)
fcntl(13,F_SETLKW,0x7fffffffd4e8) = 0 (0x0)
writev(0x85,0x81019cc90,0x1,0x1,0xffffffffea994e98,0x810197010) = 129 (0x81)
gettimeofday({1448524674.295938 },0x0) = 0 (0x0)
gettimeofday({1448524674.295982 },0x0) = 0 (0x0)
poll({33/POLLIN|POLLHUP 32/POLLIN|POLLHUP 31/POLLIN|POLLHUP
30/POLLIN|POLLHUP 29/POLLIN|POLLHUP 28/POLLIN|POLLHUP 27/POLLIN|POLLHUP
26/POLLIN|POLLHUP 25/POLLIN|POLLHUP 24/POLLIN|POLLHUP 23/POLLIN|POLLHUP
22/POLLIN|POLLHUP 74/POLLIN|POLLHUP 73/POLLIN|POLLHUP 130/POLLIN|POLLHUP
129/POLLIN|POLLHUP 66/POLLIN|POLLHUP 65/POLLIN|POLLHUP 35/POLLIN|POLLHUP
34/POLLIN|POLLHUP 53/POLLIN|POLLHUP 54/POLLIN|POLLHUP 166/POLLIN|POLLHUP
165/POLLIN|POLLHUP 68/POLLIN|POLLHUP 67/POLLIN|POLLHUP 56/POLLIN|POLLHUP
55/POLLIN|POLLHUP 117/POLLIN|POLLHUP 118/POLLIN|POLLHUP
175/POLLIN|POLLHUP 176/POLLIN|POLLHUP 60/POLLIN|POLLHUP
59/POLLIN|POLLHUP 184/POLLIN|POLLHUP 183/POLLIN|POLLHUP
171/POLLIN|POLLHUP 172/POLLIN|POLLHUP 88/POLLIN|POLLHUP
87/POLLIN|POLLHUP 157/POLLIN|POLLHUP 158/POLLIN|POLLHUP
193/POLLIN|POLLHUP 194/POLLIN|POLLHUP 58/POLLIN|POLLHUP
57/POLLIN|POLLHUP 77/POLLIN|POLLHUP 78/POLLIN|POLLHUP 72/POLLIN|POLLHUP
71/POLLIN|POLLHUP 80/POLLIN|POLLHUP 79/POLLIN|POLLHUP 52/POLLIN|POLLHUP
51/POLLIN|POLLHUP 48/POLLIN|POLLHUP 47/POLLIN|POLLHUP 141/POLLIN|POLLHUP
142/POLLIN|POLLHUP 46/POLLIN|POLLHUP 45/POLLIN|POLLHUP 41/POLLIN|POLLHUP
42/POLLIN|POLLHUP 127/POLLIN|POLLHUP 128/POLLIN|POLLHUP
37/POLLIN|POLLHUP 38/POLLIN|POLLHUP 50/POLLIN|POLLHUP 49/POLLIN|POLLHUP
92/POLLIN|POLLHUP 91/POLLIN|POLLHUP 116/POLLIN|POLLHUP
115/POLLIN|POLLHUP 63/POLLIN|POLLHUP 64/POLLIN|POLLHUP 76/POLLIN|POLLHUP
75/POLLIN|POLLHUP 102/POLLIN|POLLHUP 101/POLLIN|POLLHUP
104/POLLIN|POLLHUP 103/POLLIN|POLLHUP 85/POLLIN|POLLHUP
86/POLLIN|POLLHUP 121/POLLIN|POLLHUP 122/POLLIN|POLLHUP
100/POLLIN|POLLHUP 99/POLLIN|POLLHUP 93/POLLIN|POLLHUP 94/POLLIN|POLLHUP
95/POLLIN|POLLHUP 96/POLLIN|POLLHUP 114/POLLIN|POLLHUP
113/POLLIN|POLLHUP 39/POLLIN|POLLHUP 40/POLLIN|POLLHUP 98/POLLIN|POLLHUP
97/POLLIN|POLLHUP 61/POLLIN|POLLHUP 62/POLLIN|POLLHUP 138/POLLIN|POLLHUP
137/POLLIN|POLLHUP 89/POLLIN|POLLHUP 90/POLLIN|POLLHUP
111/POLLIN|POLLHUP 112/POLLIN|POLLHUP 83/POLLIN|POLLHUP
84/POLLIN|POLLHUP 108/POLLIN|POLLHUP 107/POLLIN|POLLHUP
178/POLLIN|POLLHUP 177/POLLIN|POLLHUP 123/POLLIN|POLLHUP
124/POLLIN|POLLHUP 110/POLLIN|POLLHUP 109/POLLIN|POLLHUP
81/POLLIN|POLLHUP 82/POLLIN|POLLHUP 106/POLLIN|POLLHUP
105/POLLIN|POLLHUP 164/POLLIN|POLLHUP 163/POLLIN|POLLHUP
156/POLLIN|POLLHUP 155/POLLIN|POLLHUP 125/POLLIN|POLLHUP
126/POLLIN|POLLHUP 150/POLLIN|POLLHUP 149/POLLIN|POLLHUP
173/POLLIN|POLLHUP 174/POLLIN|POLLHUP 139/POLLIN|POLLHUP
140/POLLIN|POLLHUP 161/POLLIN|POLLHUP 162/POLLIN|POLLHUP
136/POLLIN|POLLHUP 135/POLLIN|POLLHUP 160/POLLIN|POLLHUP
159/POLLIN|POLLHUP 69/POLLIN|POLLHUP 70/POLLIN|POLLHUP
168/POLLIN|POLLHUP 167/POLLIN|POLLHUP 119/POLLIN|POLLHUP
120/POLLIN|POLLHUP 182/POLLIN|POLLHUP 181/POLLIN|POLLHUP
144/POLLIN|POLLHUP 143/POLLIN|POLLHUP 43/POLLIN|POLLHUP
44/POLLIN|POLLHUP 131/POLLIN|POLLHUP 132/POLLIN|POLLHUP
133/POLLIN|POLLHUP 134/POLLIN|POLLHUP},152,5108) = 1 (0x1)
readv(0x85,0x81019cc90,0x1,0x1,0x80860bd82,0x0) = 7 (0x7)
gettimeofday({1448524674.297480 },0x0) = 0 (0x0)
poll({33/POLLIN|POLLHUP 32/POLLIN|POLLHUP 31/POLLIN|POLLHUP
30/POLLIN|POLLHUP 29/POLLIN|POLLHUP 28/POLLIN|POLLHUP 27/POLLIN|POLLHUP
26/POLLIN|POLLHUP 25/POLLIN|POLLHUP 24/POLLIN|POLLHUP 23/POLLIN|POLLHUP
22/POLLIN|POLLHUP 74/POLLIN|POLLHUP 73/POLLIN|POLLHUP 130/POLLIN|POLLHUP
129/POLLIN|POLLHUP 66/POLLIN|POLLHUP 65/POLLIN|POLLHUP 35/POLLIN|POLLHUP
34/POLLIN|POLLHUP 53/POLLIN|POLLHUP 54/POLLIN|POLLHUP 166/POLLIN|POLLHUP
165/POLLIN|POLLHUP 68/POLLIN|POLLHUP 67/POLLIN|POLLHUP 56/POLLIN|POLLHUP
55/POLLIN|POLLHUP 117/POLLIN|POLLHUP 118/POLLIN|POLLHUP
175/POLLIN|POLLHUP 176/POLLIN|POLLHUP 60/POLLIN|POLLHUP
59/POLLIN|POLLHUP 184/POLLIN|POLLHUP 183/POLLIN|POLLHUP
171/POLLIN|POLLHUP 172/POLLIN|POLLHUP 88/POLLIN|POLLHUP
87/POLLIN|POLLHUP 157/POLLIN|POLLHUP 158/POLLIN|POLLHUP
193/POLLIN|POLLHUP 194/POLLIN|POLLHUP 58/POLLIN|POLLHUP
57/POLLIN|POLLHUP 77/POLLIN|POLLHUP 78/POLLIN|POLLHUP 72/POLLIN|POLLHUP
71/POLLIN|POLLHUP 80/POLLIN|POLLHUP 79/POLLIN|POLLHUP 52/POLLIN|POLLHUP
51/POLLIN|POLLHUP 48/POLLIN|POLLHUP 47/POLLIN|POLLHUP 141/POLLIN|POLLHUP
142/POLLIN|POLLHUP 46/POLLIN|POLLHUP 45/POLLIN|POLLHUP 41/POLLIN|POLLHUP
42/POLLIN|POLLHUP 127/POLLIN|POLLHUP 128/POLLIN|POLLHUP
37/POLLIN|POLLHUP 38/POLLIN|POLLHUP 50/POLLIN|POLLHUP 49/POLLIN|POLLHUP
92/POLLIN|POLLHUP 91/POLLIN|POLLHUP 116/POLLIN|POLLHUP
115/POLLIN|POLLHUP 63/POLLIN|POLLHUP 64/POLLIN|POLLHUP 76/POLLIN|POLLHUP
75/POLLIN|POLLHUP 102/POLLIN|POLLHUP 101/POLLIN|POLLHUP
104/POLLIN|POLLHUP 103/POLLIN|POLLHUP 85/POLLIN|POLLHUP
86/POLLIN|POLLHUP 121/POLLIN|POLLHUP 122/POLLIN|POLLHUP
100/POLLIN|POLLHUP 99/POLLIN|POLLHUP 93/POLLIN|POLLHUP 94/POLLIN|POLLHUP
95/POLLIN|POLLHUP 96/POLLIN|POLLHUP 114/POLLIN|POLLHUP
113/POLLIN|POLLHUP 39/POLLIN|POLLHUP 40/POLLIN|POLLHUP 98/POLLIN|POLLHUP
97/POLLIN|POLLHUP 61/POLLIN|POLLHUP 62/POLLIN|POLLHUP 138/POLLIN|POLLHUP
137/POLLIN|POLLHUP 89/POLLIN|POLLHUP 90/POLLIN|POLLHUP
111/POLLIN|POLLHUP 112/POLLIN|POLLHUP 83/POLLIN|POLLHUP
84/POLLIN|POLLHUP 108/POLLIN|POLLHUP 107/POLLIN|POLLHUP
178/POLLIN|POLLHUP 177/POLLIN|POLLHUP 123/POLLIN|POLLHUP
124/POLLIN|POLLHUP 110/POLLIN|POLLHUP 109/POLLIN|POLLHUP
81/POLLIN|POLLHUP 82/POLLIN|POLLHUP 106/POLLIN|POLLHUP
105/POLLIN|POLLHUP 164/POLLIN|POLLHUP 163/POLLIN|POLLHUP
156/POLLIN|POLLHUP 155/POLLIN|POLLHUP 125/POLLIN|POLLHUP
126/POLLIN|POLLHUP 150/POLLIN|POLLHUP 149/POLLIN|POLLHUP
173/POLLIN|POLLHUP 174/POLLIN|POLLHUP 139/POLLIN|POLLHUP
140/POLLIN|POLLHUP 161/POLLIN|POLLHUP 162/POLLIN|POLLHUP
136/POLLIN|POLLHUP 135/POLLIN|POLLHUP 160/POLLIN|POLLHUP
159/POLLIN|POLLHUP 69/POLLIN|POLLHUP 70/POLLIN|POLLHUP
168/POLLIN|POLLHUP 167/POLLIN|POLLHUP 119/POLLIN|POLLHUP
120/POLLIN|POLLHUP 182/POLLIN|POLLHUP 181/POLLIN|POLLHUP
144/POLLIN|POLLHUP 143/POLLIN|POLLHUP 43/POLLIN|POLLHUP
44/POLLIN|POLLHUP 131/POLLIN|POLLHUP 132/POLLIN|POLLHUP
133/POLLIN|POLLHUP 134/POLLIN|POLLHUP},152,5106) = 1 (0x1)
readv(0x85,0x81019cc90,0x1,0x1,0x80860bd82,0x0) = 190 (0xbe)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
clock_gettime(13,{1448524674.000000000 }) = 0 (0x0)
> If you could profile your use case on a linux host with the perf tools,
> that may give us some insights.
>
Unfortunately now I don't have enought free time, but I try test it when
it will.
>> I think may be samba something doing not optimal way. Like this,
>> first
>> we try to create directory (mkdir), then we check it (stat). May be
>> that
>> leads to impact filesystems and samba ldap works slower than
>> openldap.
>>
>> fcntl(15,F_SETLKW,0x7fffffffd118) = 0 (0x0)
>> fcntl(15,F_SETLKW,0x7fffffffd188) = 0 (0x0)
>> clock_gettime(13,{1448375653.000000000 }) = 0 (0x0)
>> mkdir("/var/db/samba4/private/sam.ldb.d",0700) ERR#17 'File exists'
>> stat("/var/db/samba4/private/sam.ldb.d/DC=DOMAINDNSZONES,DC=SPEECHPRO
>> ,DC=COM.ldb",{
>> mode=-rw------- ,inode=242034,size=4247552,blksize=32768 }) = 0 (0x0)
>> fcntl(16,F_SETLKW,0x7fffffffd098) = 0 (0x0)
>> fcntl(16,F_SETLKW,0x7fffffffd138) = 0 (0x0)
>> fcntl(16,F_SETLKW,0x7fffffffd098) = 0 (0x0)
>> fcntl(16,F_SETLKW,0x7fffffffd138) = 0 (0x0)
>> fcntl(16,F_SETLKW,0x7fffffffd098) = 0 (0x0)
>> fcntl(16,F_SETLKW,0x7fffffffd138) = 0 (0x0)
>> clock_gettime(13,{1448375653.000000000 }) = 0 (0x0)
>> clock_gettime(13,{1448375653.000000000 }) = 0 (0x0)
>> fcntl(16,F_SETLK,0x7fffffffd098) = 0 (0x0)
>> fcntl(16,F_SETLKW,0x7fffffffd118) = 0 (0x0)
>> fcntl(16,F_SETLKW,0x7fffffffd188) = 0 (0x0)
>> clock_gettime(13,{1448375653.000000000 }) = 0 (0x0)
>> mkdir("/var/db/samba4/private/sam.ldb.d",0700) ERR#17 'File exists'
>> stat("/var/db/samba4/private/sam.ldb.d/DC=FORESTDNSZONES,DC=SPEECHPRO
>> ,DC=COM.ldb",{
>> mode=-rw------- ,inode=242035,size=4247552,blksize=32768 }) = 0 (0x0)
>> fcntl(17,F_SETLKW,0x7fffffffd098) = 0 (0x0)
>> fcntl(17,F_SETLKW,0x7fffffffd138) = 0 (0x0)
>> fcntl(17,F_SETLKW,0x7fffffffd098)
>>
> These really should happen only once per startup of the process, how
> often do you see it?
>
I see it about every seconds with any files in
/var/db/samba4/private/sam.ldb.d directory.
>> 23.11.2015 18:44, mathias dufresne пишет:
>>> Hi,
>>>
>>> I feel like I must reply off-list: Samba 4 is not yet able to use
>>> threads.
>>> To work around that we are about to deploy our DCs as virtual
>>> machines, to be able to multiply the number of Samba running.
>>>
>>> I expect you would have already thought about that, but in case you
>>> didn't, I said it :p
>>>
>>> I will follow closely that topic you opened. Sorry to not help
>>> more.
>>>
>>> Cheers,
>>>
>>> mathias
>>>
>>>
>>>
>>> 2015-11-23 14:50 GMT+01:00 Yuriy Tabolin <tabolin at speechpro.com
>>> <mailto:tabolin at speechpro.com>>:
>>>
>>> Hi all.
>>> I have samba 4.2.3 on freebsd 10.1 server. There are three DC
>>> and
>>> about 350 PC on domain. DCs have 3 CPU and 3GB RAM. Some
>>> servers
>>> with services like apache, exim, dovecot, etc use samba4 ldap
>>> (port 389) for user authentication. Some times ago after adding
>>> some services to use ldap I found, that samba4 cannot serve all
>>> ldap requests. Every 10-30 minutes I see in DCs logs:
>>> dc1 kernel: sonewconn: pcb 0xfffff800753d6ab8: Listen queue
>>> overflow: 16 already in queue awaiting acceptance (28
>>> occurrences)
>>>
>>> After that I have used tcpdump for recording ldap-traffic and
>>> have
>>> seen that after TCP handshaking, server some times suddenly
>>> send
>>> TCP-RST to close connection. I have enlarged DCs resources (CPU
>>> and RAM), kern.ipc.somaxconn, did some other system tuning but
>>> all that didn't help. Load average on DCs permanently near 0.9
>>> -1.0
>>> and samba cannot serve all ldap conncetions. ldap clients works
>>> well because they use as minimum as two domain controllers as
>>> ldap
>>> servers. Is there a some performance problem in samba4, slow
>>> processing ldap requests or something else?
>>> Thanks for any help.
>>>
>>> --
>>> With best regards,
>>>
>>> Tabolin Yuriy
>>> System administrator
>>> Speech Technology Center
>>>
>>>
>>> --
>>> To unsubscribe from this list go to the following URL and read
>>> the
>>> instructions: https://lists.samba.org/mailman/options/samba
>>>
>>>
>>
>> --
>> With best regards,
>>
>> Tabolin Yuriy
>> System administrator
>> Speech Technology Center
>>
--
With best regards,
Tabolin Yuriy
System administrator
Speech Technology Center
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