Emily (Apr 06 2009)

Message boards : Technical News : Emily (Apr 06 2009)

Author	Message
Matt Lebofsky Volunteer moderator Project administrator Project developer Project scientist Send message Joined: 1 Mar 99 Posts: 1375 Credit: 74,079 RAC: 0	Message 882902 - Posted: 6 Apr 2009, 22:32:20 UTC
	Much progress over the weekend on the science database front. The pulse table has successfully been rebuilt, we started up the assimilators, and the queue drained to zero. With the influx of resources the splitters revved up and more workunits went out. All was well until the logical log on thumper filled up. This is a log of transactions which is necessary for database replication, and given all the pulse table activity it's no surprise it did get clogged up with extra transactions. When the log fills, the database engines have no choice but to hold still until there's log space again. Jeff noticed the dip in the traffic graph and got that all sorted out. Just now there was another dip in the traffic caused by some DOS'ing on our web site causing some mysql database overload. Damn robots skimming stats off our sites... I made a quick route rule to block the offending IP. This damaging effect was probably unintentional but still very annoying. - Matt ____________ -- BOINC/SETI@home network/web/science/development person -- "Any idiot can have a good idea. What is hard is to do it." - Jeanne-Claude
	ID: 882902 ·

kenzieB Volunteer tester Send message Joined: 16 Mar 07 Posts: 3913 Credit: 1,577,395 RAC: 631	Message 882937 - Posted: 7 Apr 2009, 0:26:10 UTC
	It's not so bad: I was able to grab a cache of WU's within minutes of allowing new tasks, so I'm a happy girl. As always, thanks for keeping us peon's updated. ____________
	ID: 882937 ·

Kenta* Send message Joined: 9 Jan 04 Posts: 28 Credit: 6,235,556 RAC: 10,664	Message 883047 - Posted: 7 Apr 2009, 12:50:22 UTC
	First of all, thanks for the tech news! I daily keep a track on how You're doin' aswell as the servers. I also have a question: Is it possible to define different computing settings for multible computers? I have 2 quad core computers which I only want one to use all 4 cores and the other 3. How does this work? ____________ All You have to decide is what to do with the time that is given to You.
	ID: 883047 ·

Johnney Guinness Volunteer tester Send message Joined: 11 Sep 06 Posts: 2944 Credit: 2,305,966 RAC: 330	Message 883049 - Posted: 7 Apr 2009, 13:21:46 UTC Last modified: 7 Apr 2009, 13:22:43 UTC
	Matt's April Tech News theme names; Hurricane's! *************** 2007 - Olga 2005 - Emily 2004 - Alex (Alexei) *************** Am i correct? John. ____________
	ID: 883049 ·

Volunteer tester Send message Joined: 9 Apr 02 Posts: 11987 Credit: 18,072,649 RAC: 55,143	Message 883135 - Posted: 7 Apr 2009, 21:14:53 UTC - in response to Message 883047.
	First of all, thanks for the tech news! I daily keep a track on how You're doin' aswell as the servers. I also have a question: Is it possible to define different computing settings for multible computers? I have 2 quad core computers which I only want one to use all 4 cores and the other 3. How does this work? The best place to ask questions about individual users is over in the Q&A forum. To answer your question, yes, you can set up different venues or "locales" with different preferences for each venue. Then you simply put each Host ID (computer) into the appropriate venue and it will obey those preferences. ____________
	ID: 883135 ·

DJStarfox Send message Joined: 23 May 01 Posts: 1040 Credit: 485,117 RAC: 71	Message 883164 - Posted: 7 Apr 2009, 22:49:03 UTC - in response to Message 882902.
	Man, I hate it when my DB log space fills up! In theory, if the DB replica was faster, then you wouldn't need as much log space. In practice, I've just had to find more drive space for the logs. :( I've heard that some firewall/routers (expensive ones) have automatic DoS detection and will temporarily ban an IP address that does too many scans. I wish I had some more information about it, but this is a common problem for most I.T. shops.
	ID: 883164 ·

Tommithy Send message Joined: 21 Mar 01 Posts: 1 Credit: 3,872,724 RAC: 6,441	Message 884142 - Posted: 11 Apr 2009, 1:38:29 UTC - in response to Message 883164.
	Watchguard Firewalls will automatically ban IP's of DoS attacks. ____________
	ID: 884142 ·

Message boards : Technical News : Emily (Apr 06 2009)