Different distro may redirect the output of /proc/kmsg to any physical log files or virtual devices (/dev/xxx) they like. But "/proc/kmsg" is the original source of the kernel log, because the kernel implement its ring buffer operation inside fs/proc/kmsg.c:

chunk_limit_size 4MB total_limit_size 512MB flush_interval 30s flush_thread_count 4 retry_timeout 24h logged 404 errors show that there are often reconnect to that AWS ES cluster. just sad that fluentd doesn't have better self recovery mechanisms, and if one index goes down it bring down everything else Tuning the Redo Log Buffer - iDevelopment.info Apr 16, 2001 Troubleshooting SQL Server Transaction Log Related Wait Types Jan 05, 2016 How to read ring buffer within linux kernel space?

Different distro may redirect the output of /proc/kmsg to any physical log files or virtual devices (/dev/xxx) they like. But "/proc/kmsg" is the original source of the kernel log, because the kernel implement its ring buffer operation inside fs/proc/kmsg.c:

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Oracle How To Tune Log Buffer - Cryer If the ratio of "redo log space requests" to "redo entries" is less than 5000:1 (i.e. less than 5000 in the above), then increase the size of the redo log buffer until the space request ratio stops falling. Alternately, if memory is not a constraint then try to reduce the number Insight into the SQL Server buffer cache An interesting column in dm_os_buffer_descriptors is the free_space_in_bytes column. This tells us how full each page in the buffer cache is, and therefore provides an indicator of potential wasted space or inefficiency. We can determine the percentage of pages that are taken up by free space, rather than data, for each database on our server: Log Cache Page size - social.msdn.microsoft.com Sep 15, 2010