60447 - Disk cache is cleared if current entries reach maximum

Status: VERIFIED FIXED

(Core :: Networking: Cache, defect, P3)

Description

[Koike Kazuhiko]

Disk cache is cleared if current entries reach maximum.
I can see it with "about:cache" window.

Disk cache should remain at maximum.

Comment 1

[Randell Jesup [:jesup] (needinfo me)]

Confirmed FreeBSD 4.1 20001116xx

Cache clears when it hits maximum (512).  I suspect the various fixes put in to
play with the "delete one entry" code in the final stages.

This can have a rather annoying impact on performance for people who are using
modems instead of broadband links; raising severity.  Affects performance.

OS->all

Comment 2

[Randell Jesup [:jesup] (needinfo me)]

This is a serious performance hit if it's still happening.  It doesn't take long
to hit 512 images (especially if resized 1x1 gifs count as entries), and we
appear to blow the cache at that point.  VERY painful for modem users.  Adding
topperf

Comment 3

[bht237]

Correct and even worse than that.
There is still a painful performance problem even on high bandwidth connections:
*** Latency ***
Depending on geographical location, this can accumulate to several seconds with
all the cache proxies contributing to this.
Mouseover images etc. will just not work. The browser cache is extremely
important - unless Mozilla only wants to be used on the intranet.

Please don't forget: Good professional web application designers rely on the
browser cache in their designs quite heavily.

Comment 4

[Randell Jesup [:jesup] (needinfo me)]

As per the performance meeting today, this probably isn't an issue for mozilla
1.0 because of the new cache (right?), but it is an issue for NS6 and we may
want to address it for that reason.

Comment 5

[Gagan]

should get fixed with new new cache.

Comment 6

[chris hofmann]

should this bug be on beards plate?
what is the latest estimate for disk cache land-o-mundo

Comment 7

[gordon]

This bug can be assigned to me.  I'm the lead (I hope that gets pronounced 
correctly) for the new cache service.

We have a functioning memory cache, both object (for image lib) and stream (for 
http and imap) modulo a few bugs.  We're bringing up a simple version of a disk 
cache now.

Pavlov is transitioning ImgLib2 to use the cache service.  HTTP will begin 
transitioning shortly, and I need to talk to mscott to find out when IMAP can 
transition.  The transitions can happen independently, so there isn't a need to 
throw one big switch.

Comment 8

[gordon]

This is fixed in the new cache.  Marking FIXED.

Comment 9

[Tom Everingham]

verified:
win NT4 2001052204
mac os9 2001051504
linux rh6 2001052213