0005055: Slow response with save-mode=after-request

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Category

Severity

Reproducibility

Date Submitted

Last Update

0005055

[Resin]

minor

always

04-30-12 09:41

05-09-12 17:04

Reporter

cowan

View Status

public

Assigned To

cowan

Priority

high

Resolution

fixed

Platform

Status

closed

Projection

none

OS Version

ETA

none

Fixed in Version

3.1.13

Product Version

3.1.12

Product Build

Summary

0005055: Slow response with save-mode=after-request

Description

When using session-config save-mode=after-request, responses to the client are delayed by the time it takes to serialize, CRC, and persist the session. The description of after-request says "Save the session after the request has been served and completed". This is true, however the response is stored in the buffer but not flushed to the client unit the request is "finished".

The response needs to be flushed before the session is persisted.

Steps To Reproduce

Additional Information

Reported by IHG

Attached Files

Relationships

Notes
(0005756) cowan 05-06-12 12:00 edited on: 05-06-12 12:02	Response is delayed only using load-balance. HmuxLoadBalancerServlet waits for the HMUX_QUIT signal before flushing the response to the client, which HmuxRequest does not deliver until after the invocation is complete. HttpRequest does not suffer from this, thus connections direct to the app-tier are faster for the 1st request. Additionally, all requests of a keep-alive sequence except the 1st are delayed for session persistence. Even though the session is persisted after the response is written, the connection thread is busy persisting the session and not available to process the next incoming request. load-balance-connect-timeout and load-balance-socket-timeout are significant here, because if the pier app-server is unresponsive or slow, the delay can be significant.

(0005760) cowan 05-09-12 17:04	server/015p

Issue History
Date Modified	Username	Field	Change
04-30-12 09:41	cowan	New Issue
05-06-12 12:00	cowan	Note Added: 0005756
05-06-12 12:01	cowan	Note Edited: 0005756
05-06-12 12:02	cowan	Note Edited: 0005756
05-06-12 12:04	cowan	Status	new => assigned
05-06-12 12:04	cowan	Assigned To	=> cowan
05-09-12 17:04	cowan	Status	assigned => closed
05-09-12 17:04	cowan	Note Added: 0005760
05-09-12 17:04	cowan	Resolution	open => fixed
05-09-12 17:04	cowan	Fixed in Version	=> 3.1.13

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