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Number crunching :
Boinc officially DOS'd my network
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Author | Message |
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![]() Send message Joined: 28 Nov 99 Posts: 402 Credit: 528,725 RAC: 0 ![]() |
Because server won't talk with some of my computers. I get 500 http server error message. With so many computers trying to upload individual work units I was DOS'd from internet. And I only have 5 computers trying to connect. When I stopped boinc access to network I could communicate again. Boinc will not work for projects like seti unless they build another program like Setiqueue to cache units for network computers and have only one connection to main servers needed. I have a few hundred units that were trying to upload. I was downloading no problem. well 1.5MDl and 256kupload for dsl. |
![]() ![]() Send message Joined: 17 Dec 99 Posts: 4215 Credit: 3,474,603 RAC: 0 ![]() |
I currently have 16 computers and very few of them are talking to Berkeley right now, and I am not having DOS issues. I am on cable, maybe it is your dsl? Are you trying to manually retry the connects on the machines? If so just be patient and let Boinc do its back-off thing. There are around Total users: 351,734 in Boinc/Seti. We are ALL trying to get thru. Here is a site that shows the Cogent, Berkeley's ISP, speed: http://fragment1.berkeley.edu/~cricket/inr-668-interfaces.html as you can see it is decreasing, there are problems on their end!!! Normally it is around 50 meg in the top left graph when all is working well. ![]() |
![]() Send message Joined: 28 Nov 99 Posts: 402 Credit: 528,725 RAC: 0 ![]() |
I currently have 16 computers and very few of them are talking to Berkeley right now, and I am not having DOS issues. I am on cable, maybe it is your dsl? It looks like the workunit is uploaded and then some. It uploads to 108% done. I let the retry work on its own but eventually it overwhelms the network. I end up with a few hundred workunits trying to upload many times. It would be nice if all my computers could talk with one of my computers and it would communicate with main servers at one time. All the workunits are going into upload mode at the same time and not coming out of it. |
![]() Send message Joined: 28 Nov 99 Posts: 402 Credit: 528,725 RAC: 0 ![]() |
I currently have 16 computers and very few of them are talking to Berkeley right now, and I am not having DOS issues. I am on cable, maybe it is your dsl? It looks like the workunit is uploaded and then some. It uploads to 108% done. I let the retry work on its own but eventually it overwhelms the network. I end up with a few hundred workunits trying to upload many times. It would be nice if all my computers could talk with one of my computers and it would communicate with main servers at one time. All the workunits are going into upload mode at the same time and not coming out of it. |
![]() Send message Joined: 3 Apr 99 Posts: 1603 Credit: 2,700,523 RAC: 0 ![]() |
I too have 5 systems always crunching with an always-on ADSL connection and have seen *no* such problem. This must be an issue specific to your set-up or connection, not BOINC in general. ![]() |
![]() Send message Joined: 28 Nov 99 Posts: 402 Credit: 528,725 RAC: 0 ![]() |
I too have 5 systems always crunching with an always-on ADSL connection and have seen *no* such problem. the error is 500 SERVER error. My laptop on same network can upload, well recently it has had to run other project because the scheduler can share nicely. The other project has 1 million in long term debt and is not finished. The computers can download fine. Boinc can't see the unit is uploaded. How many times have I used on programming projects "It works on my computer". That is bad specification. |
1mp0£173 Send message Joined: 3 Apr 99 Posts: 8423 Credit: 356,897 RAC: 0 ![]() |
I too have 5 systems always crunching with an always-on ADSL connection and have seen *no* such problem. It appears that BOINC may report a "500" error for a number of different issues. It isn't always a message back from the server. |
![]() Send message Joined: 28 Nov 99 Posts: 402 Credit: 528,725 RAC: 0 ![]() |
I too have 5 systems always crunching with an always-on ADSL connection and have seen *no* such problem. Well since there is not a way that I can controll the work unit return through one computer, because of an unknown problem with boinc program, there is complete anarchy because all the individual computers are trying to directly connect with main servers. I probably don't have the greatest dsl connection. t's Bellsouth. I have noticed that If I download a dvd image with one computer the other computers have more trouble connecting. With classic I did not have this problem because I used Setiqueue. Only the one computer is assigned to communicate with mainservers to get new work and return results. I also only had it only connect during a 4 hour period during the day. |
1mp0£173 Send message Joined: 3 Apr 99 Posts: 8423 Credit: 356,897 RAC: 0 ![]() |
Most of your comments have little or nothing to do with why there are 500 errors. I don't know how you use your computers. I don't know how good or bad Bellsouth might be. I don't know if you could tune your network to make this better. If it's one computer, you may want to look at why some work better than others. You say that with SETIQUEUE you only allowed connections during a four hour period during the day. You can do something similar with BOINC. You'll still have contention, but you can split your hosts into three groups and give each a two hour window if you like. ... and you can avoid downloading DVD images when other processes need bandwidth. But a Denial of Service attack? No. |
![]() ![]() Send message Joined: 17 Dec 99 Posts: 4215 Credit: 3,474,603 RAC: 0 ![]() |
Well since there is not a way that I can controll the work unit return through one computer, because of an unknown problem with boinc program, there is complete anarchy because all the individual computers are trying to directly connect with main servers. I probably don't have the greatest dsl connection. t's Bellsouth. I have noticed that If I download a dvd image with one computer the other computers have more trouble connecting. With classic I did not have this problem because I used Setiqueue. Only the one computer is assigned to communicate with mainservers to get new work and return results. I also only had it only connect during a 4 hour period during the day. Your problem then is similar to most people on a network, when one computer is hogging all the bandwidth, other computers can't get thru. Stop downloading DVD's, and your other computers will be able to connect just fine. Now as for the Berkeley problem, it is most likely NOT on your end! ALOT of people are having problems, that is your first and best clue that it is not just you. ![]() |
![]() Send message Joined: 21 Apr 00 Posts: 1459 Credit: 58,485 RAC: 0 ![]() |
I too have 5 systems always crunching with an always-on ADSL connection and have seen *no* such problem. use a proxy, there are a few free ones out there, also use boincview to control which hosts have network access and when, you could also set your general preferences to only allow network access during a time when you won't be using lots of bandwidth use a download manager (i recommend GetRight) when downloading DVDs or any other large files to limit the bandwidth used so that other apps have a chance to connect but it sounds like a network "quality of service" problem with your ISP or connection, noisy line prehaps? ask them about it |
1mp0£173 Send message Joined: 3 Apr 99 Posts: 8423 Credit: 356,897 RAC: 0 ![]() |
ALOT of people are having problems, that is your first and best clue that it is not just you. I suspect that the majority are not seeing problems -- and not posting that they're not seeing problems. |
![]() Send message Joined: 21 Apr 00 Posts: 1459 Credit: 58,485 RAC: 0 ![]() |
Here is a site that shows the Cogent, Berkeley's ISP, speed: from what i've heard there's something wrong with that set of graphs, quite often it's shown incorrect values for traffic volume, there's a new system with an updated version of the cricket system which seems to work much better http://fragment1.berkeley.edu/newcricket/cricket/inr-668.html |
![]() Send message Joined: 3 Apr 99 Posts: 1603 Credit: 2,700,523 RAC: 0 ![]() |
I too have 5 systems always crunching with an always-on ADSL connection and have seen *no* such problem. But this is a case of "It doesn't work om my computer" and that IMO is an anomolous set-up issue not a design or specification matter. I'm not seeting any 500 errors at all in the past few days. ![]() |
![]() Send message Joined: 28 Nov 99 Posts: 402 Credit: 528,725 RAC: 0 ![]() |
Here's my setup. The connection to service is through the Bellsouth DSL modem. I connected a USR 8514. I have 5 computers connected. 4 on the hardwire connections one using the wireless connection. 4 are winxp one is winxp 64 testdrive(if you don't turn it off it lasts a while). The router doesn't switch lines too well. So if one computer is doing something it affects the other computers eventually. The boinc manager went into a state where all of the uploads went on continuously. Over a hundred connections from collecting of workunits when 500 server error is received and the router is blocked. |
![]() Send message Joined: 18 Mar 04 Posts: 1547 Credit: 760,577 RAC: 0 ![]() |
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web03 ![]() Send message Joined: 13 Feb 01 Posts: 355 Credit: 719,156 RAC: 0 ![]() |
What type of router are you using? Which modem do you have from Bellsouth? Which service do you have from Bellsouth - DSL Lite, DSL Ultra, Xtreme or Xtreme 6.0? I have Bellsouth Xtreme and haven't seen the same thing you are mentioning. BTW, my setup is a Netgear Wireless with home pc hard-wired and a laptop that is wireless. The modem I have from Bellsouth is a Westell WireSpeed. Wendy Wendy ![]() ![]() Click Here for BOINC FAQ Service |
![]() ![]() Send message Joined: 26 Oct 00 Posts: 1005 Credit: 6,366,949 RAC: 0 ![]() |
BOINC should be backing off on the uploads so that at any given moment only a few work units are actively trying to upload. Even if there are 30 trying to upload at the same time, your network shouldn't die. If it is you have a serious problem somewhere. I sometimes use bit torrent to download large files. It will sometimes have over 100 extablished connections to various places around the internet, all transfering more than BOINC ever does. And my setup is somewhat... "non-standard". My computers go to a wired switch which feeds into a wireless bridge which connects to an access point in the living room. From there it finally goes to the cable modem. A member of The Knights Who Say NI! For rankings, history graphs and more, check out: My BOINC stats site |
1mp0£173 Send message Joined: 3 Apr 99 Posts: 8423 Credit: 356,897 RAC: 0 ![]() |
........ I had the same question. Always thought routers switched packets.... |
Mark Day ![]() Send message Joined: 19 Aug 02 Posts: 81 Credit: 502,830 RAC: 0 ![]() |
The cheap hub portions of most dsl/cable routers usually don't do either fast switching or full duplex. The OP is probably experiencing collisions as packets contend for the active hub port. Assorted odd problems and random fun can also be had due to packet fragmentation, as related to MTU differences between local LAN and dsl/cable side of network. This could explain "downloads fine but wont upload" issues. M |
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