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Full Discussion: ZFS Filesystem
Operating Systems Solaris ZFS Filesystem Post 302954533 by jlliagre on Tuesday 8th of September 2015 06:19:00 PM
Old 09-08-2015
Quote:
Originally Posted by achenle
4 GB cache is more than enough. I seriously doubt it impacted performance.
Well, the 4GB ARC is now full but while uncapped, it used to contain three times more data (12.9GB).

It is not possible to know how much this cache size reduction does affect performance without getting at least hits and miss statistics but if there is a large increase in misses, the performance impact might be huge.
 

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OTFAUX(1)							   User Commands							 OTFAUX(1)

NAME
otfaux - otfaux DESCRIPTION
otfaux - append snapshots and statistics to existing otf traces at given 'break' time stamps. otfaux [Options] <file name> Options: -h, --help show this help message -V show OTF version -b <size> buffer size for read and write operations -n <n> number of breaks (distributed regularly) if -p and -t are not set, the default for -n is 200 breaks -p <p> create break every 'p' ticks (if both, -n and -p are specified the one producing more breaks wins) -t <t> define (additional) break at given time stamp -F force overwrite old snapshots and statistics -R delete existing snapshots and statistics only -f <n> max number of filehandles output --funcgroups create functiongroup summaries instead of function summaries --filegroups create file group summaries instead of file summaries -v verbose mode, print break time stamps -a show advancing progress during operation --snapshots write ONLY snapshots but NO statistics --statistics write ONLY statistics but NO snapshots -s a[,b]* regard given streams only when computing statistics. expects a single token or comma separated list. this implies the '--statis- tics' option! -l list existing stream tokens otfaux 1.10.2 May 2012 OTFAUX(1)
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