soctcppoll and soctcplst

Posted in 2010

Summary

Roger Vilca asked the difference between soctcplst and soctcppoll threads in onstat -g ath. Martin Fuerderer and Art Kagel explained that soctcplst is the listener thread waiting for new connection requests, while soctcppoll polls existing connections for new data and notifies the session (sqlexec) threads. Roger's follow-up on how to tell whether the poll or listener thread counts are too low or high got no answer.

Auto-generated by Claude from the posts below — may be imperfect; read the full thread.

Topics: General Discussion

ROGER VILCA — Fri, 09 Apr 2010 07:50:22 — source: IIUG Forums & Mailing Lists

Hi, What is the difference between a thread called soctcppoll and soctcplst ? I'm confused with the output of onstat -g ath

↪ replying to ROGER VILCA

Martin Fuerderer — Fri, 09 Apr 2010 08:59:27 — source: IIUG Forums & Mailing Lists

Hi, one is the listener thread, listening for new connection requests and subsequently serving them (new session). The other is the poll thread, checking if new data arrived on existing connections and notifying the appropriate session threads (normally called sqlexec threads). Regards, Martin -- Martin Fuerderer IBM Informix Development Munich, Germany Information Management IBM Deutschland Research & Development GmbH Chairman of the Supervisory Board: Martin Jetter Board of Management: Dirk Wittkopp Corporate Seat: Boeblingen, Germany Reg.-Gericht: Amtsgericht Stuttgart, HRB 243294 ids-bounces@iiug.org wrote on 04/09/2010 09:50:22 AM: > Hi, > What is the difference between a thread called soctcppoll and soctcplst ? I'm > confused with the output of onstat -g ath > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. >

↪ replying to ROGER VILCA

Art Kagel — Fri, 09 Apr 2010 10:46:47 — source: IIUG Forums & Mailing Lists

IB the soctcplst threads are blocked on the connection port listening for new connections while the soctcppoll threads are polling the existing connections ports for new requests from client sessions. Art Art S. Kagel Advanced DataTools (www.advancedatatools.com) IIUG Board of Directors (art@iiug.org) See you at the 2010 IIUG Informix Conference April 25-28, 2010 Overland Park (Kansas City), KS www.iiug.org/conf Disclaimer: Please keep in mind that my own opinions are my own opinions and do not reflect on my employer, Advanced DataTools, the IIUG, nor any other organization with which I am associated either explicitly, implicitly, or by inference. Neither do those opinions reflect those of other individuals affiliated with any entity with which I am affiliated nor those of the entities themselves. On Fri, Apr 9, 2010 at 3:50 AM, ROGER VILCA <rvilca@luzdelsur.com.pe> wrote: > Hi, > What is the difference between a thread called soctcppoll and soctcplst ? > I'm > confused with the output of onstat -g ath > > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > > --0016e68ee4a7defa9a0483cb82ca

↪ replying to Martin Fuerderer

ROGER VILCA — Fri, 09 Apr 2010 16:14:19 — source: IIUG Forums & Mailing Lists

OK, thanks very much One more question Once I set the number of soctcplst (NUMCPUVPS) and soctcppoll (NETTYPE) How I realize if the number of soctcppoll threads is too low or too high ? The same for soctcplst

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