APAR status
Closed as program error.
Error description
biphttplistener process may exhibit very high cpu even with moderate load. The procstack output shows that some threads are looping in compression/decompression function. ---------- tid# 42075303 (pthread ID: 10282) ---------- 0x090000002d115008 inflate(??, ??) + 0x1f0 0x09000000267ec7dc Imb::WSBase::Inflate::ZStream::inflate(Imb: :WSBase::Inflate::ZStream::Type,bool, evbuffer*, ImbCommonBuffer 0x15c 0x09000000267ec4e4 Imb::WSBase::Inflate::inflate(ImbCompression::Type, evbuffer*, ImbCommonBuffer&, Imb::WSBase::DecompressionInfo*, int)(??, ??, ??, ??, ??) + 0x54 0x09000000267ed0a4 Imb::WSBase::Inflate::operator()(evbuffer*, ImbCommonBuffer&, Imb::WSBase::DecompressionInfo*)(??, ??, ??, ??) + 0x124 0x0900000030ba8768 Imb::EvHtp::Request::addBodyData(ImbCommonBuffer&, bool, Imb::WSBase::DecompressionInfo*)(??, ??, ??, ??) + 0x208 0x0900000030aff340 Imb::HTTPListener::ProtoHandler::handle(Imb ::EvHtp::RequestStub)(0x125197020,0x110f30d00, 0x0) + 0x3b0 0x0900000030bce648 Imb::EvHtp::ListenerRunThread::Internal::Pr ocessRequest(evhtp_request*,void*)(??, ??) + 0x3c8 0x0900000030c2d810 htp__request_parse_fini_(??) + 0x90
Local fix
Problem summary
**************************************************************** USERS AFFECTED: All users of App Connect Enterprise v12.0 using IntegrationNode level HTTP listener Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: The node level biphttplistener process may exhibit very high cpu even with moderate load. The procstack output may contain some threads looping in compression/decompression function as shown below: ---------- tid# 42075303 (pthread ID: 10282) ---------- inflate(??, ??) + 0x1f0 Imb::WSBase::Inflate::ZStream::inflate(Imb: :WSBase::Inflate::ZStream::Type,bool, evbuffer*, ImbCommonBuffer) Imb::WSBase::Inflate::inflate(ImbCompression::Type, evbuffer*, ImbCommonBuffer&, Imb::WSBase::DecompressionInfo*, int) Imb::WSBase::Inflate::operator()(evbuffer*, ImbCommonBuffer&, Imb::WSBase::DecompressionInfo*) Imb::EvHtp::Request::addBodyData(ImbCommonBuffer&, bool, Imb::WSBase::DecompressionInfo*) Imb::HTTPListener::ProtoHandler::handle(Imb::EvHtp::RequestStub) Imb::EvHtp::ListenerRunThread::Internal::ProcessRequest(evhtp_re quest*,void*) htp__request_parse_fini_(??)
Problem conclusion
The product has been modified such that the biphttplistener process no longer exhibits high cpu when processing request messages. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v11.0 11.0.0.21 v12.0 12.0.8.0 The latest available maintenance can be obtained from: http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041 If the maintenance level is not yet available,information on its planned availability can be found on: http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IT42903
Reported component name
APP CONNECT ENT
Reported component ID
5724J0560
Reported release
C00
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2023-01-17
Closed date
2023-04-12
Last modified date
2023-04-12
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
APP CONNECT ENT
Fixed component ID
5724J0560
Applicable component levels
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSDR5J","label":"IBM App Connect Enterprise"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"C00","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
13 April 2023