There was much discussion about a year ago about the cache performance on
RISC OS, and there were some code changes, but I would like to add the
results of some investigations of the Netsurf v3.4 cache on my Iyonix,
running RISC OS 5.23 (11 Oct 2015).
In the past I had problems with the cache taking large amounts of disc
space, and the resulting long backup times for !Boot, so my current
settings are 10MB space, expiring after 2 days.
However, the actual space usage was 45MB (as measured by Filer Count),
and it contained 210 files. What was more difficult to find was that
there were 7,298 directories with 8 levels, which occupied another 14MB,
of which 6,412 contained no files at any lower level. So only 886
directories actually contained the 210 files of cached data. Enumeration
of the cache took about 2 minutes.
I decided to delete all 6,412 directories that contained no data, saving
about 12MB of disc space. More importantly, counting or enumerating all
the cache now takes about 7 seconds. There are still the same number of
files and cached bytes.
Netsurf itself still seems to work, but I have not noticed any change in
So, some questions:
- When are cached files deleted to meet the configured size & expiry?
- Are directories included in the space used?
- Are directories ever deleted? If so, when?
- Will deletion of empty directories cause any problems for Netsurf?
I have looked at the help ... but that says that files are not deleted by
Netsurf, and makes no mention of directories. It also refers to a
'Perform maintenance' button which can be used to delete redundant files
... but this is nowhere to be seen!
Does Netsurf not save its hotlist and history till the user quits the
Last night I was looking for tips on how to use CSS for something on
my website, came across a wonderful site and immediately added it to
my Netsurf hotlist. An hour later, some other application froze and
the computer had to be rebooted.
Today I wanted to return to that site about CSS, but there was no
record of it in my hotlist. Nor in my history. Tried all sorts of
searches via Google and Duckduck -- no luck. Bereft.
Is there any way to make Netsurf save history and hotlist during a
session? Or am I misunderstanding something?
As for the site I lost, maybe somebody else knows it and could point
me in the right direction.
- Exceptionally clean design. The bits of code within sentences were
presented with a grey background.
- Fine use of language, not cutesy or nerdy or commercial.
- It had a surprisingly nifty name, one syllable I think, almost in
the league of web.com or code.com -- so simple it made me wonder that
the writers found it still available.
- Further surprise when I got to a deeper page: it was a UK company,
despite the ".com" domain, located somewhere like Shoreditch or
Stop press: Found it! It's html.com
Back to original Q about when Netsurf saves its hotlist.
Jim Nagel www.archivemag.co.uk
Summary: We had some downtime, and we're working on a fix.
Services are currently up but may be slower than usual.
Expect moments of downtime throughout the day.
Last night, at approximately 0330 GMT, one of Pepperfish's
virtual machines suffered a kernel issue related to handling
of interrupts, causing it to become unresponsive. Sadly
this happened exactly as a database update was occuring,
causing some corrupted configuration files to be generated
and pushed to other servers. The upshot was that DNS
broke on our main server and on our secondaries. This had
a knock-on effect of also preventing mail being delivered
A second issue relating to very poor IO performance on one
of our virtual machine hosts has compounded the problem and
slowed a correct fix.
Given the extremely high uptime of the host (Over 1,200 days),
and the lack of anything it any of its logs that might
suggest why IO performance has become disappointing, we plan
on rebooting it (and thus all the virtual machines it hosts)
at some point today. This will mean the following services
will be down:
- ssh access to 'platypus'
- Web server
- IMAP server
- Mailing list delivery server
- One incoming mail server
- One DNS server
Secondary servers hosted elsewhere should receive and store
any email that is delivered while this happens; nothing
should be lost.
Apologies for the disruption.
I was sent an online survey and the form looks ok but there
is no submit button:
Is this not supported ?
<div class="fb-footer fb-item-alignment-center" id="fb-submit-button-div"
<input class="fb-button-special fb_cond_applied" id="fb-submit-button"
data-regular="" data-valign="top" value="Submit" />
<input name="fb_form_custom_html" type="hidden" />
<input name="fb_form_embedded" type="hidden" />
<input name="fb_js_enable" id="fb_js_enable" type="hidden" />
<input name="fb_url_embedded" id="fb_url_embedded" type="hidden" />