Category: Simulator User Group

SL project updates week 10/2: server and viewer notes

Posted on by Inara Pey
RMS Titanic, Second Life
RMS Titanic, Second Life

Server Deployments

Tuesday, March 3rd, saw the Main (SLS) channel receive the server maintenance package deployed to the RC channels in week #9. This includes:

  • A server-side fix for BUG-8297, “Unable to teleport anywhere using SLGO”
  • Improvements to server logging.

There were no deployments to the RC channels on Wednesday, March 4th.

Upcoming Server Updates

During the Server Beta User Group meeting on Thursday, March 5th, Caleb Linden, who now chairs the meetings, indicated that an upcoming deployment to the RC channel will include a change to the number of off-line IMs delivered when you log-in.

Currently, the cap is set to 25, but it’s not clear what the new limit will be, although it might vary (or be adjustable) depending on whether a user is a Basic or Premium member. This change will not affect the forwarding of off-line IMs to e-mail.

SL Viewer

The new Tool Chain Update viewer was promoted to Release Candidate status on Wednesday, March 4th. Version 3.7.26.299443 see a change to the tools used to build the viewer (e.g. the use of Visual Studio 2013, Xcode 6.1, and some other tools improvements). This update also incorporates the log-in screen update to a single button, replacing the need for the Log-in Screen RC viewer.

Future Viewer Updates

Avatar Layers Global Limit

In 2014, BUG-6258, “Popularity of Mesh Attachments Facilitates Need For More Alpha Layers” is a request to raise the number of alpha layers which can be concurrently worn, prompted the Lab to consider the introduction of a global limit on the number of clothing layers an avatar could wear,so that, like attachments, an avatar can wear as many clothing layers in any combination, up to that limit, rather than having individual limits enforced per clothing layer.

During the TPV Developer meeting in week #9, Oz Linden indicated that while there had been major progress on this idea since it had been first raised, something would likely be appearing later in the year. Since then. Whirly Fizzle has spotted a viewer code repository from Vir Linden: “SL-103 WIP – viewer enforces wearable limits based on total articles of clothing rather than per-type limit. Limit is artificially low for testing, will bump before release.”

This doesn’t mean new global limits on avatar cloting layers will be appearing in the next few weeks, but it does indicate that it is one of several avatar related projects he’s working on (together with the new Avatar Hover Height feature and fixing at least some of the current crop of attachment issues).

Notifications Changes

Also during the TPVD meeting in week #9, Oz commented that some “cosmetic” work was being done to the way notifications are presented through the viewer. Again, thanks to Whirly’s poking around, this would appear to be in connection with BUG-8000, “Separate transaction notices from group notice/invites or provide some means for sorting incoming notifications”, which has been imported by the Lab and is being worked on.

A preliminary version of the proposed new notification panel (see BUG-8000). Note that is is a work-in-progress and may be subject to change prior to release (image courtesy of Whirly Fizzle)
A preliminary version of the proposed new notification panel (see BUG-8000). Note that is is a work-in-progress and may be subject to change prior to release (image courtesy of Whirly Fizzle)

 Group Chat

Simon Linden is continuing to bang on things to try to correct issues that have arisen since the last set of updates at the end of week #9. According to Caleb Linden, who now chairs the Server Beta Group meetings, those groups that are affected are seeing up to a 20% failure rate in delivered messages.

Other Items

Rigged Mesh Crashers

Further to my last report on this issue, Whirly Fizzle (who is genuinely one of the great powerhouses in helping to keep SL rolling along) stepped up to provide a more detailed explanation of the issue based on her own extensive investigations into the matter (thanks Whirly! 🙂 ).

In her comments, Whirly notes that Chalice Yao has developed a debug  setting within her own NACL viewer setting specifically stop cap rendering of worn rigged meshes, and that Nicky Dasmijn from the Firestorm team is working on a patch for their viewer. However, while the setting works, it can also prevent “legitimate” rigged mesh items with high vertices counts from rendering.

Further discussion of the problem with regards to BUG-2082, which includes new viewer rendering controls, confirmed this would not help with the issues presented by this particular kind of rigged mesh crasher but it will prevent issues such as the animated mesh “tail of doom” which can cause viewer crashes as a result of overloading memory.

SL project updates week 10/1: server, general news

Posted on by Inara Pey

Leka, Nordan om Jorden; Inara Pey, March 2015, on Flickr Leka, Nordan om Jorden (Flickr) – blog post

Server Deployments

Tuesday, March 3rd, saw the Main (SLS) channel receive the server maintenance package deployed to the RC channels in week #9. This includes:

  • A server-side fix for BUG-8297, “Unable to teleport anywhere using SLGO”
  • Improvements to server logging.

There were no scheduled deployments to the RC channels on Wednesday, March 4th.

Group Chat

Following the last deployment of back-end group chat changed during week #9, some large groups with active group chat have reported an increase in issues of message failures, although they appear to do so somewhat randomly, with some people seeing them and others simply not receiving them at all.

Commenting on the problem at the Simulator User Group meeting on Tuesday, March 3rd, Simon Linden summarised the situation thus:

In short, yes, it’s cranky, and yes, we’re (as in I am) looking at it … the chat server itself is actually running better than before, believe it or not. A back-end service it relies on, what we call “agent presence” [used to help locate someone on the grid], seems to be having new problems, so the changes may have added load to those servers and is causing problems, or something else unexpectedly changed … [So] some people don’t get the messages when chat is failing … it’s dropping sending some updates and messages when it times out with some other internal requests.

Further updates will be provided as the Lab / Simon continues to look at the problems.

CDN Notes

There have been recent reports of people experiencing slow texture and mesh load issues, leading to questions concerning the CDN service (although some of the issues that have been mentioned might be related to local caching more than the CDN). In particular questions have been asked as to how long a CDN server retained its cache of data relating to regions prior to going “cold” and requiring a “reload” from the SL services. Commenting on this at the Open-source Developer meeting on Monday, March 2nd, Oz Linden said that some CDN caches do age out more quickly than others.

The Lab has also been experimenting with more than one CDN provider, and are continuing with different CDN configurations as well to further tune things, as well as continuing to measure results; so we may yet see further changes  / improvements, and a possible decrease in instances that may be related to “cold” CDN loads.

Other Items

Rigged Mesh Crashers

The Server Beta Meeting on Thursday, February 26th saw the issue of a “new” mesh crasher being used on the grid. This is essentially a deliberately corrupted rigged mesh attachment which, when worn will cause viewers around it to immediately crash, with no warning or ability to take preventative action, such as muting the offending avatar.

Just over a year ago, some advice was given on how to counter graphics crashers by adjusting the viewer’s debug settings, and some people many be getting pointed towards it again in order to avoid being affected by the “new” crasher.

However, changing the specified debug settings can lead to a failure to render much of what you actually want to see, as noted in  this comment following the article. At the time the advice was given, the Firestorm team tracked many of the problems their users were experiencing directly to the settings having been changed. Ergo, if you are pointed to this particular article as a means of combating graphics crashers, please keep in mind you may gain undesirable results, and keep a note of the original settings so you can switch back to them should this be the case.

During the discussion on this matter at the SBUG meeting, speculation was raised on whether or not the forthcoming new viewer rendering controls (see: STORM-2082). opinion is divided, as the viewer downloads the data which may cause a graphic crash and starts processing some of it in order to determine what to render or not, and even this initial processing could be enough to crash it.

SL Feed Issues

There has been an uptick in the number of snapshot uploads to the SL feeds failing over the course of the last week, with some additionally reporting issues of comments failure to appear / “loves” failing to stick. Some users also reported issues over the weekend with web profiles failing to load, and a JIRA (see BUG-8677) was logged on this issue on March 3rd.

The last several days have seen people again encounter issues with snapshots failing to process / display in their feeds
The last several days have seen people again encounter issues with snapshots failing to process / display in their feeds

Whether the two issues had a common cause isn’t clear, but as the latter has been resolved, and you are one of those continuing to experience snapshot upload failures, please file a JIRA providing as much information as possible (links to any feed post with a missing snapshot, date / time of upload, number of failures, etc.).

SL project updates week 9/1: server, viewer

Posted on by Inara Pey
China Grove - blog post
China Grove – blog post

Server Deployments, Week 9

As always, please refer to the server deployment thread for the latest news and updates.

  • There was no deployment to the Main (SLS) channel on Tuesday, February 24th
  • On Wednesday, February 25th, all three RC channels will receive the same server maintenance package, which comprises:
    • A server-side fix for BUG-8297, “Unable to teleport anywhere using SLGO”
    • Improvement to server logging.

The SL Go teleport issue only affected users running the SL Viewer (SLV) supplied by OnLive, who run the SL Go service (it did not affect those using Firestorm on SL Go), and was the result of a recent server-side code clean-up which meant that OnLive’s SLV was essentially using an invalid channel name when instigating teleports, causing them to fail.

OnLive implemented a workaround for the issue on their side of things on February 3rd, however, the update included in the RC package noted above provides a fix on LL’s side of the connection as well.

SL Viewer

On Tuesday, February 24th, the Maintenance RC viewer, version 3.7.25.299021, was promoted to the de facto release viewer.  This release includes a large number of improvements and fixes to the viewer, as listed in the release notes.

This currently leaves just the new log-in viewer RC (version 3.7.25.298971 released on February 17th) and the Experience Tools RC (version 3.8.0.298001 last updated on January 15th) in the release channel for the time being.

Experience Keys / Tools

The initial release of Experience Keys / Tools is still awaiting various back-end updates to clear the Lab’s QA department, with the viewer remaining at RC status until that happens (see above). As previously noted in my Experience Keys reports, the initial release of the functionality will not support grid-wide experiences, although are likely to be on the roadmap for future enhancements.

Once released, the current iteration of the functionality is liable to be allowed to run for a number of months before the Lab starts making  (or releasing) updates, with Oz Linden commenting at the Simulator User Group meeting on Tuesday, February 24th, “there will be another round of improvements to Experiences at some point, but we’re going to give the first round some time to be adopted before we go too far with those.”

Group Chat

Group chat work is continuing, with the recent changes to handling server lock-ups reducing the number of reported freezes.

Simon Linden is also continuing to look at the code side of things, and specifically issues with group chat visibly “stalling” which switching between chat tabs and / or as a result of moving between regions. This work has been the subject of a series of “mini-tests” during the Server Beta User Group meetings held on Thursdays, and resulted in some recent code updates. Commenting on this at the SUG meeting, Simon said, “The new code also showed me details about one way the system fails, so I hope to make that better at recovering,” so further updates can likely be expected, although this may not be as broadly visible to many users as the initial group chat improvements.

SL updates updates week 8: viewer updates and general news

Posted on by Inara Pey

Soyokaze; Inara Pey, January 2015, on FlickrSoyokaze (Flickr) – blog post

Server Deployments

As will already be known, there were no server deployments this week.

SL Viewer

A new release candidate viewer appeared in the release channel on February 17th in the form of a new login viewer. Version 3.7.25.298971 sees the three log-in options buttons on the original log-in screen update replaced with a single button.

LL viewer log-in updates: as they first appeared after an initial log-in following the 2014 revisions to the log-in / splash screen (top); and as the log-in options are displayed in the new RC viewer (bottom) - click for full size, if required
LL viewer log-in updates: as they first appeared after an initial log-in following the 2014 revisions to the log-in / splash screen (top); and as they are now displayed in the new RC viewer, version 3.7.25.298971 (bottom) – click for full size, if required

February 17th also saw updates made to the Maintenance RC viewer, which was updated to version 3.7.25.298971, while the Tools update project viewer was updated to version 3.7.25.298862, having been held over for release from week #7, due to the Valentine’s weekend / President’s day no change window.

Group Chat

The was a further back-end update to the group chat servers during the week, further implementing the stability improvements the Lab has been working on to solve issues of chat appearing to freeze when switching between tab / issues with the chat servers themselves locking-up.

Other Items

Attachment Issues

As per my last report, there is still considerable debate about the nature of attachment issues, particularly those reported via BUG-6925. A concern is that while (as noted last time), the Lab considers there to be multiple issues occurring, BUG-6925 has already had some initial investigations carried out by the Lab, and these might be getting missed as the Lab considers the wider problems and attempts to categorise things. There is also a concern that the BUG-6925 issue in particular is AIS-v3 related, which could result in a significant increase in reported issues should that code be released by Firestorm as a part of their planned update.

Suggestions have been made on additional logging that might be added to the viewer to further pin-down precisely what is happening in the various circumstances where attachments are detached / re-attached or appear to be detached but aren’t, etc., and the issues are continuing to be examined by the Lab.

SL project news week 7/1: miscellaneous; grid status page

Posted on by Inara Pey

Square Pegs in Round Holes, Kashmir Dreams; Inara Pey, February 2015, on Flickr“The Lost Town” – Square Pegs in Round Holes (Flickr) – blog post

News is a little light coming out of the Lab on projects right now, although there was a blog post on things made on Monday, February 9th, which I also blogged about. However, new for the start of the week is still a little on the light side.

Server Deployments

There are no scheduled server deployments for the week.

SL Viewer

It had been anticipated that week #6 would see the Tools update project viewer (version 3.7.25.298587) and the Avatar Hover Height project viewer (version 3.7.25.298129) both superseded by a release candidate. However, neither update occurred.

It is possible these updates will occur during week #7; however, for the time being, all of the LL viewers remain as they were at the end of week #6, and as recorded in my Current Viewer Releases page, namely:

  • Release version: 3.7.24.297623 (January 13th)
  • Release candidate versions:
    • Maintenance RC, version 3.7.25.298030 – this has a number of issues associated with it, which may prevent its promotion to the de facto release viewer (January 27th)
    • Experience Keys / Tools RC, version 3.8.0.298001 (January 14th) – this has been awaiting final server-side updates to the Experience capabilities
  • Project viewers:
    • Tool Update, version 3.7.25.298587 (January 28th)
    • Mesh importer, version 3.7.25.298441 (February 3rd) – a number of bug reports have already been filed for this viewer – see the JIRA filter list for details.
    • Avatar Hover Height, version 3.7.25.298129 (January 21st)
    • Viewer-managed Marketplace, version 3.7.21.296858 (November 19th, 2014)
    • Oculus Rift project viewer, version 3.7.18.295296 (October 13th, 2014).

Grid Status Page Relocated

As some have noticed, on Monday, February 9th, the Lab relocated the SL grid status page to a blog address, with a redirect from the “old” URL of status.secondlifegrid.net/.

However, the result has caused some confusion, notably as a result of breakage across sites and links referring to the “old” URL. Even some of the updates on the secondlife.com dashboard users see having been generating 404 errors as a result of the move.

Commenting on the change during the Simulator User Group meeting on Tuesday, February 10th, Simon Linden – who was out of the office when the change was made – said, “I don’t know what’s going to happen with the status page … but we know the shift caused issues … we heard a lot about it breaking things that relied on it.  I’m not sure what the solution will be.”

So… watch that space…

SL project updates week 6: server; mesh importer project viewer

Posted on by Inara Pey

Umbral Photography, Hydra Isles (Flickr) – blog post

Server Deployments Week 6

On Tuesday, February 3rd, the Main (SLS) channel received the server maintenance package deployed to the three RC channels in week #5, which includes:

  • a fix for BUG-8247 “[Experience Tools] Issue with llRequestExperiencePermissions() triggering experience_permissions_denied() and XP_ERROR_NOT_PERMITTED_LAND after prior 5 minute no response period.”
  • Internal improvements for experience tools key-value functions.

There were no deployments to the RC channels for the week.

Following the Main channel deployment on Tuesday, a number of regions reported issues with objects failing to load and render, textures remaining grey, mesh outfits failing to rez / render teleport issues, etc., all of which appeared to be consistent with region capabilities failing on re-start, and thus requiring the affected regions to be manually restarted. As reported by Whirly Fizzle in the forum thread linked-to above, this has been an intermittent problem which has been occurring for over a year.

SL Viewer – Mesh Importer Update

On Wednesday, February 4th saw the release of the Importer project viewer, version 3.7.25.298441. This viewer brings various improvements to the mesh uploader / importer, which are given in the release notes as:

In this viewer we’ve modified the importer to (optionally) improve debug output, perform name-based LOD association, and handle models with many materials.

Using these new features, models with more than 8 unique faces can be imported. Gone are the days of importing complicated meshes in pieces with “some assembly required”. At import, these models are automatically split into pieces so that each satisfy the current face limits for a volume.

  • The same limitations on LODs and materials remain in place (e.g. your low LOD mesh materials must be a subset of the full LOD materials).
  • LODs and Physics reps can now be explicitly associated with a given mesh in the full LOD model using name-based matching.
  • By properly naming the meshes in your lower LOD meshes and physics reps, you can avoid issues with ordering of the meshes within your DCC tool and other material mismatching errors.
  • An ImporterDebug option has been added to the settings.xml file which, if enabled, causes more information to be output during import than you can shake a stick at. The extra output can be very helpful for diagnosing authoring errors (e.g. violating the material subset constraints mentioned above) and pinpoint what needs to be fixed in the source model for successful import.

Note that project news is a little light this week due to on-going SL planning meetings taking place at the Lab.