Hello,
As wikipedia is slow at the busy time, I propose to get some new servers for our cluster.
- Some new web servers(3 or 4), P4 2,8Ghz with 2Go of RAM - A server which could be a backup for nfs server, zwinger, with bigger disk, 80Go is very low, maybe 200 or 250Go - Upgrading disk of zwinger to 200 or 250Go (or add a new one) - A db server in 64 bits mode with 4Go of RAM (if we cant make working geoffrin), like this one : http://www.macomp.com/products/servers/patriot2200.asp With raid 10 disk system, 4 or 6 drives in raid and 1 stand-by. I prefer 15000rpm disk, but I can understand that they are more expensive - Maybe another squid server
What do you think of that ?
Shaihulud
What do you think of that ?
I don't know what hardware we'd choose, but I wholeheartdly agree on the need for some better hardware than what we have now. During afternoon (french time), it becomes slow as hell, painful to see Wikipedia crawl like that... -.-
Shaihulud
Ryo
Nicolas Weeger wrote:
What do you think of that ?
I don't know what hardware we'd choose, but I wholeheartdly agree on the need for some better hardware than what we have now. During afternoon (french time), it becomes slow as hell, painful to see Wikipedia crawl like that... -.-
Shaihulud
Ryo
Now, at 21:34:35 UTC, it's also very slow (1-2 minutes for viewing a page).
-- Looxix
On Apr 6, 2004, at 14:36, Luc Van Oostenryck wrote:
Now, at 21:34:35 UTC, it's also very slow (1-2 minutes for viewing a page).
We have an intermittent problem where one of the servers will have an unusually large number of running processes for a minute or two, which will slow down response time.
By unusual I mean like 50-100 processes fighting for CPU time; normally there are just a handful. The cause of this isn't entirely clear yet. My pure speculation is that the squids might be distributing traffic poorly; for instance the NFS server occasionally freezes up for a couple seconds, which might cause the squids to give up on all of the servers, then start sending all traffic to the first one that responds. Maybe? Maybe not. Just speculation which I haven't gotten a chance to investigate.
-- brion vibber (brion @ pobox.com)
Nicolas Weeger wrote:
What do you think of that ?
I don't know what hardware we'd choose, but I wholeheartdly agree on the need for some better hardware than what we have now. During afternoon (french time), it becomes slow as hell, painful to see Wikipedia crawl like that... -.-
Buying more and more hardware isn't always the best solution, especially not when "it's slow" is all you know.
Timwi
Timwi wrote:
Nicolas Weeger wrote:
What do you think of that ?
I don't know what hardware we'd choose, but I wholeheartdly agree on the need for some better hardware than what we have now. During afternoon (french time), it becomes slow as hell, painful to see Wikipedia crawl like that... -.-
Buying more and more hardware isn't always the best solution, especially not when "it's slow" is all you know.
Timwi
It would be useful to have MRTG or similar graphs available for _all_ the servers in the cluster, showing for each system: * disk I/O seeks/second * disk I/O bytes/second * network interfaces bytes/second * CPU load * memory usage * swap load
This, in conjunction with the existing real-time performance graphs, would enable "many eyes" to inspect the system, and form hypotheses about where the bottlenecks are.
-- Neil
On Tue, 06 Apr 2004 18:48:01 +0200, Camille Constans wrote:
- Some new web servers(3 or 4), P4 2,8Ghz with 2Go of RAM
The web servers use about 210Mb ram currently (according to 'free'), 512Mb ram and no raid for web servers would buy the same performance for the same money.
- A server which
could be a backup for nfs server, zwinger, with bigger disk, 80Go is very low, maybe 200 or 250Go - Upgrading disk of zwinger to 200 or 250Go (or add a new one) - A db server in 64 bits mode with 4Go of RAM (if we cant make working geoffrin), like this one : http://www.macomp.com/products/servers/patriot2200.asp With raid 10 disk system, 4 or 6 drives in raid and 1 stand-by. I prefer 15000rpm disk, but I can understand that they are more expensive
- Maybe another squid server
What do you think of that ?
Shaihulud
wikitech-l@lists.wikimedia.org