Probably horrible to do, but +1 for not using Snappy... There are definitely better/faster algorithms available.
Thanks, Kyle. On Wed, May 15, 2013 at 9:57 AM, Steven Hartland <kill...@multiplay.co.uk>wrote: > If your considering a new compression algorithm, I would strongly suggest > looking at lz4:- > https://code.google.com/p/lz4/ > > Regards > Steve > ----- Original Message ----- From: "Fletcher Dunn" < > fletch...@valvesoftware.com> > To: "Half-Life dedicated Win32 server mailing list" < > hlds@list.valvesoftware.com> > Sent: Wednesday, May 15, 2013 5:51 PM > > Subject: Re: [hlds] Who do we send netspike.txt log too? > > > These are temporary measures to help diagnose and workaround the problem. > > Once we confirm that this is the issue, we'll switch to Snappy or some > other fast compression library. Our own hand-rolled LZSS compressor is > known to be slow. > > From: > hlds-bounces@list.**valvesoftware.com<hlds-boun...@list.valvesoftware.com>[mailto: > hlds-bounces@list.**valvesoftware.com<hlds-boun...@list.valvesoftware.com>] > On Behalf Of D Bauhmz > Sent: Wednesday, May 15, 2013 9:51 AM > To: Half-Life dedicated Win32 server mailing list > Subject: Re: [hlds] Who do we send netspike.txt log too? > > I forgot to ask you Fletcher. > > Will sv_compressfragments and sv_**compressstringtablebaselines serve as > a permanent fix for this issue or is there more optimizations and a > different fix for this on the way? Are player spawns causing a spike (Which > I've always thought was normal, heh) something that is planned to be > fixed/optimized as well? > > Thanks > > On Wed, May 15, 2013 at 12:24 PM, Fletcher Dunn < > fletch...@valvesoftware.com<**mailto:fletcherd@**valvesoftware.com<fletch...@valvesoftware.com>>> > wrote: > No need to send any netspike files. We have enough good data and further > netspike files or vprof files are not likely to help right now. It anybody > wants to send in more windows traces, however, feel free to do so. > > For some reason the servers are spending huge amounts of time in > compression code. The data from the traces and vprof is very consistent. > Specifically, compressing string tables and fragments can sometimes take a > very large amount of time. The LZSS compression code has not changed in > ages. The contents of the string tables, as far as I can tell, did not > change significantly in the SteamPipe update. I am still at a loss to > explain what changed in the SteamPipe update. > > There are also occasionally mini-spikes when a player spawns, but I don't > think that's new. > > I have a new "prerelease" beta that adds two convars that can be used to > totally disable compression: > > sv_compressfragments - defaults ON (existing behavior to try to compress > all fragments by default) > sv_**compressstringtablebaselines - default OFF (new beahvior to turn off > compression by default) > > You can switch these at any time, but sv_compressfragments is "sticky" --- > it takes effect on a per-client basis, at the time when a client connects. > > You might try turning both of those off and see how performance changes or > if any problems occur. Of course, this will increase bandwidth. But it > would help to confirm that this is indeed the problem. > > If anybody wants to do their own data gathering to see where the time is > going, without the data gathering itself causing spikes that might not have > otherwise occurred, I'd recommend the following netspike / vprof settings: > > vprof_on > vprof_dump_spikes 20 > sv_netspike 0 > sv_netspike_sendtime_ms 2 > sv_netspike_output 2 > > From: > hlds-bounces@list.**valvesoftware.com<hlds-boun...@list.valvesoftware.com> > <mailto:hlds-**boun...@list.valvesoftware.com<hlds-boun...@list.valvesoftware.com> > **> > [mailto:hlds-bounces@list.**valvesoftware.com<hlds-boun...@list.valvesoftware.com> > <mailto:hlds-**boun...@list.valvesoftware.com<hlds-boun...@list.valvesoftware.com> > **>] On Behalf Of Essay Tew Phaun > > Sent: Wednesday, May 15, 2013 12:15 AM > To: Half-Life dedicated Win32 server mailing list > Subject: Re: [hlds] Who do we send netspike.txt log too? > > fletch...@valvesoftware.com<**mailto:fletcherd@**valvesoftware.com<fletch...@valvesoftware.com>> > I'm not sure if they're still wanting logs or not. I think they've kind of > found where the problem is. I don't know what it would hurt though. > > > On Wed, May 15, 2013 at 1:59 AM, DragonLight <ad...@ponyfortress2.com<** > mailto:ad...@ponyfortress2.com**>> wrote: > Been catching the spikes with the new commands, should we email them to > someone? > > ______________________________**_________________ > To unsubscribe, edit your list preferences, or view the list archives, > please visit: > https://list.valvesoftware.**com/cgi-bin/mailman/listinfo/**hlds<https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds> > > > ______________________________**_________________ > To unsubscribe, edit your list preferences, or view the list archives, > please visit: > https://list.valvesoftware.**com/cgi-bin/mailman/listinfo/**hlds<https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds> > > > > > ------------------------------**------------------------------** > -------------------- > > > > ______________________________**_________________ >> To unsubscribe, edit your list preferences, or view the list archives, >> please visit: >> https://list.valvesoftware.**com/cgi-bin/mailman/listinfo/**hlds<https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds> >> >> > > ==============================**================== > This e.mail is private and confidential between Multiplay (UK) Ltd. and > the person or entity to whom it is addressed. In the event of misdirection, > the recipient is prohibited from using, copying, printing or otherwise > disseminating it or any information contained in it. > In the event of misdirection, illegible or incomplete transmission please > telephone +44 845 868 1337 > or return the E.mail to postmas...@multiplay.co.uk. > > > > ______________________________**_________________ > To unsubscribe, edit your list preferences, or view the list archives, > please visit: > https://list.valvesoftware.**com/cgi-bin/mailman/listinfo/**hlds<https://list.valvesoftware.com/cgi-bin/mailman/listinfo/hlds> >
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