Can we request that if sv_allowupload is set to 0 and there is an url set for map and sound downloading that the server itself not try to upload files to clients that would have been in the upload folder. Seems to me that you would not get these (CreateFragmentsFromFile: 'downloads/ee9becfc.dat' doesn't exist.) messages/cpu usage/file search time.
SP_Kenny ----- Original Message ----- From: "Alfred Reynolds" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, July 26, 2005 12:28 AM Subject: RE: [hlds_linux] BUG: Server-side sprays and lag spikes > We are looking at this report. > > - Alfred > > ----Original Message---- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Kyle > Milnes Sent: Tuesday, July 26, 2005 12:16 AM To: > [email protected] Subject: RE: [hlds_linux] BUG: > Server-side sprays and lag spikes > >> Hi Bart, >> >> If what your research has uncovered is linked to lag-spikes then well >> played on figuring it out. >> >> I would like to see Valves response to this, Alfred what is the state >> of play? >> >> I'm going to run our servers on sv_allowupload 0 for a few days and >> check out the difference. >> >> Either way Bart, thanks for your time, and thanks for posting it >> where is should be posted :) >> >> - Kyle >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of Bart >> King >> Sent: 23 July 2005 11:49 >> To: [email protected] >> Subject: [hlds_linux] BUG: Server-side sprays and lag spikes >> >> Hi all, >> >> Something that has been plaguing our 64 player server for a while is >> seemingly random lag spikes, but after some detailed investigation >> into the problem a co-admin and I have managed to find the reason. >> >> We tried everything to find out why this was happening, including >> buying new hardware and changing bandwidth providers. After all that, >> we are 100% convinced it was srcds and I finally have the proof. >> >> In brief, more detailed report follows: >> >> - The way srcds calculates the file name for storing uploaded sprays >> causes lag. >> >> In order to get past the spam in the console[1], we reduced the >> server to 32 players. We then were able to observe lag spikes in the >> game, and by coincidence, monitoring the server console we saw this >> error: >> >> CreateFragmentsFromFile: 'downloads/ee9becfc.dat' doesn't exist. >> [message is repeated several times] >> >> In the time this message is printed, a lag spike occurs in the game. >> In the past, it has been advised to "ignore" this message - while >> this is safe to do so, when you have a popular server (as we do) it >> happens far too regularly. >> >> And the reason why this is bad? We looked into more detail by using >> strace on srcds to see what happens, here is the result just as the >> CreateFragmentsFromFile message appears (note: we run Debian Linux): >> >> open("/cs/css/cstrike/downloads", >> O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 13 fstat64(13, >> {st_mode=S_IFDIR|0755, st_size=48, ...}) = 0 >> fcntl64(13, F_SETFD, FD_CLOEXEC) = 0 >> getdents64(13, /* 2 entries */, 131072) = 48 getdents64(13, /* 0 >> entries */, 131072) = 0 >> close(13) = 0 >> >> The downloads directory is where srcds stores uploaded sprays from >> clients. >> To put this into perspective, we have, on average, 3000 clients >> connecting to our server a day, and if the majority of clients have a >> custom spray, this will ultimately get uploaded to the srcds server. >> >> For example: >> >> banana:/cs/css/cstrike# ls -l downloads | wc -l >> 52235 >> >> 52000 files over a three month period! >> >> Linux programmers on the list may notice that using getdents(2) on >> that many files, not matter how fast the bus, disk or whatever, >> *will* take a short moment - i.e. the exact length of one, random lag >> spike. >> >> So to conclude, my questions are: >> >> - Why doesn't the server clean up the downloads folder? >> - How does the server generate the filenames used to store uploaded >> sprays? >> - Can this be fixed? >> >> Our solution at the moment is to simply delete all content in the >> downloads folder and/or set sv_allowupload to zero, but you get even >> more CreateFragmentsFromFile errors in the console (but no lag!). >> >> We used a lot of time and effort to get to the bottom of this. I'd >> appreciate if Valve would at least acknowledge this. >> >> [1] - Remove the console message that says "Free sound list is full!" >> - it is absolutely meaningless. > > _______________________________________________ > To unsubscribe, edit your list preferences, or view the list archives, > please visit: > http://list.valvesoftware.com/mailman/listinfo/hlds_linux > _______________________________________________ To unsubscribe, edit your list preferences, or view the list archives, please visit: http://list.valvesoftware.com/mailman/listinfo/hlds_linux
