Hi Jan
performance problems with UMD-2 versions of top-BDII have been already
reported on this list recently.
Hw requirements for top-BDII were recently updated (quoting Maria Alandes):
"I have updated the BDII sys admin guide with new HW requirements. The
old ones are obsolete for top BDIIs after GLUE 2 is widely published by
all EGI sites."
https://tomtools.cern.ch/confluence/download/attachments/983044/EMI_BDII_sysadmin.pdf
You could consider a migration to the EMI-3 version, that has already
passed staged rollout and is available in UMD-3:
https://wiki.egi.eu/wiki/UMD-3:UMD-3.0.0#emi.bdii-top.sl6.x86_64
Tiziana
On 27/05/2013 11:06, Jan Svec wrote:
> Hi all,
>
> at NGI_CZ we have two sites with approx. 4200 jobslots total, each site running one top level BDII (one KVM virtual host (8 core, 8GB RAM), one physical machine (8 core (E5420), 16GB RAM). Both BDIIs are accessed via DNS alias bdii1rr (round-robin). The problem is that both BDIIs are quite heavily loaded (15-16) so sometimes their response is very slow. I tried to add another BDII to the DNS pool and the load dropped to 10-11. Both BDIIs are running UMD2 middleware.
> My question is if this high load is normal and if there are any "best practices" regarding number/performance of BDII servers in dependence on number of jobslots.
>
> Thank you for any help.
> Best regards
> Jan
>
--
Tiziana Ferrari
EGI.eu Operations
0031 (0)6 3037.2691
|