Lotus Domino: Verificando o NSD

Esse artigo lista alguns itens a observar na hora de analisar o nsd

Indice

OSLockSpin(??)

When investigating the NSD server thread stacks, a specific stack always showed to be the most CPU consuming thread. Using OS tools, the thread always calls OSLockSpin().

OSLockSpin(??) is a low level function in Domino code used to grab a mutex from the OS to prevent other threads from doing the same operation at the same time.

###################################
###### thread 9/49 :: router, pid=581714, tid=3948649, ptid=9510) ######
###################################
[1] 0x090000000011597c  __fd_select(??, ??, ??, ??, ??) + 0xac
[2] 0x0900000000846b80  select(0x0, 0x0, 0x0, 0x0, 0x119879420) + 0x28
[3] 0x0900000000846b14  unix_usleep(0x157c0000157c0) + 0x6c
[4] 0x09000000006c6450  OSDelayThread(0x5800000058) + 0x48
[5] 0x0900000000699cac  OSLockSpin(0x700000004ada954) + 0x1b4
[6] 0x090000000069b1cc  OSUnlockReadSem(0x700000004ada910) + 0xd4
[7] 0x090000000165b178  CRWSEMReadLock::~CRWSEMReadLock()(0x119879710, 0x200000002, 0x0) + 0x3c
[8] 0x0900000001658f88  CDirAttributeTypeDescriptions::GetNext()(0x119879ab0) + 0x70
[9] 0x0900000001658d7c  CDirAttributeTypeDescriptions::AssertAll()(0x119879ab0) + 0x3c
 ...
[27] 0x0000000100067aa8  TransferThread(0x1) + 0x218
[28] 0x09000000006c2a80  ThreadWrapper(0x0) + 0x118
[29] 0x090000000049f4f4  _pthread_body(??) + 0xdc
###################################

TCPEndp_CheckSocketReady

Possible network bottleneck, in http/router/server processes when network I/O waiting for input to come while handling HTTP or NRPC request

###################################
###### thread 30/115 :: server, pid=327930, tid=1904809, ptid=2315) ######
###################################
[1] 0x090000000011597c  __fd_select(??, ??, ??, ??, ??) + 0xac
[2] 0x09000000023cdec4  select(0x1600000016, 0x112f24e50, 0x112f26e50, 0x112f28e50, 0x112f24e28) + 0x28
[3] 0x09000000023cca54  TCPEndp_CheckSocketReady(0x1000000000001, 0x112f2b208, 0x1f4000001f4) + 0x6dc
[4] 0x09000000023cd794  cmd_poll(0x151800001edc, 0x112f2b208, 0x112f2b200, 0x112f2b128) + 0x258
[5] 0x0900000000b11314  nti_poll(0x1edc00001edc, 0x112f2b208, 0x112f2b200) + 0x214