Showing posts with label Availability. Show all posts
Showing posts with label Availability. Show all posts

Monday, 15 October 2007

Availability update

Lancs site availability looks OK for the last month at 94% which is 13% above the GridPP average, and this includes a couple of weekends lost due to dCache problems. The record from July-September has been updated on Jeremy's page. We still get the occasional failed SAM submission, no idea what causes these but they serve to deny the availability reaching high nineties.

  • June-July instability was dCache issue with the pnfs mount options, this only affected SAM tests where files were created and immediately removed.
  • mid-August were SL4 upgrade problems, caused by a few blackhole WNs. This was tracked to the jpackage repository being down which screwed with the auto-install of some WNs.
  • mid-September problems were caused by adding a new dCache pool, not bringing online until the issue is understood.
Job slot occupancy looks ok, non-HEP VOs like fusion and biomed helping to fill slots left by moderate production by Atlas.