The Message Logger is a utility which provide a logger facility for the processes running on the nodes of the on-line farm. It can also be used to collect the processes’ stdout/stderr. The Message Logger can be exploited using two different policies: either as a no-drop logger facility (messages cannot be lost, but a write to the logger facility blocks in case of full-buffer condition, due e.g. to a network congestion) or as a congestion-proof logger facility (a write to the logger facility never locks even in case of network congestion, but, in this case, messages are dropped). The Message Logger package includes a Linux DIM server (logSrv), a Linux terminal/command-line DIM client (logViewer) and a PVSS DIM client.
The Message Logger for the LHCb On-Line Farm / F. Bonifazi; D. Bortolotti; A. Carbone; D. Galli; D. Gregori; U. Marconi; G. Peco; V. Vagnoni. - STAMPA. - (2005), pp. 1-20.
The Message Logger for the LHCb On-Line Farm
CARBONE, ANGELO;GALLI, DOMENICO;GREGORI, DANIELE;VAGNONI, VINCENZO MARIA
2005
Abstract
The Message Logger is a utility which provide a logger facility for the processes running on the nodes of the on-line farm. It can also be used to collect the processes’ stdout/stderr. The Message Logger can be exploited using two different policies: either as a no-drop logger facility (messages cannot be lost, but a write to the logger facility blocks in case of full-buffer condition, due e.g. to a network congestion) or as a congestion-proof logger facility (a write to the logger facility never locks even in case of network congestion, but, in this case, messages are dropped). The Message Logger package includes a Linux DIM server (logSrv), a Linux terminal/command-line DIM client (logViewer) and a PVSS DIM client.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
