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Opened 3 months ago

Last modified 2 months ago

#2382 assigned defect

memscroller stresses the html5 client

Reported by: Antoine Martin Owned by: Antoine Martin
Priority: major Milestone: 4.0
Component: html5 Version: 2.5.x
Keywords: Cc:

Description (last modified by Antoine Martin)

Split from #2231, see ticket:2231#comment:9.

Damage latency goes up to 7 seconds with chrome!
Average is also too high:
memscroller latency

Attachments (2)

memscroller.png​ (22.2 KB) - added by Antoine Martin 3 months ago.
memscroller latency
memscroller-server-rss.png​ (59.2 KB) - added by Antoine Martin 3 months ago.
memscroller also uses too much memory

Download all attachments as: .zip

Change History (7)

Changed 3 months ago by Antoine Martin

Attachment: memscroller.png​ added

memscroller latency

comment:1 Changed 3 months ago by Antoine Martin

Description: modified (diff)
Status: new → assigned

comment:2 Changed 3 months ago by Antoine Martin

More test data showing the memscroller outlier problem in ticket:2231#comment:12.

comment:3 Changed 3 months ago by Antoine Martin

As per ticket:619#comment:29, the problem occurs only with NODELAY=0.
My guess is that this buffers too many packets in the kernel's socket output buffer, allowing things to spiral out of control.

Changed 3 months ago by Antoine Martin

Attachment: memscroller-server-rss.png​ added

memscroller also uses too much memory

comment:4 Changed 3 months ago by Antoine Martin

memscroller also uses too much memory:
memscroller also uses too much memory

comment:5 Changed 2 months ago by Antoine Martin

Milestone: 3.0 → 4.0

As per comment:3 and ticket:2231#comment:12, the default configuration handles this well enough that this can wait for the next release.

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