1.\" 2.\" Copyright (c) 2013 The DragonFly Project. All rights reserved. 3.\" 4.\" This code is derived from software contributed to The DragonFly Project 5.\" by Antonio Huete Jimenez <tuxillo@quantumachine.net> 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in 15.\" the documentation and/or other materials provided with the 16.\" distribution. 17.\" 3. Neither the name of The DragonFly Project nor the names of its 18.\" contributors may be used to endorse or promote products derived 19.\" from this software without specific, prior written permission. 20.\" 21.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.Dd February 19, 2015 35.Dt LIBHAMMER 3 36.Os 37.Sh NAME 38.Nm libhammer_stats_redo , 39.Nm libhammer_stats_undo , 40.Nm libhammer_stats_commits , 41.Nm libhammer_stats_inode_flushes , 42.Nm libhammer_stats_disk_write , 43.Nm libhammer_stats_disk_read , 44.Nm libhammer_stats_file_iopsw , 45.Nm libhammer_stats_file_iopsr , 46.Nm libhammer_stats_file_write , 47.Nm libhammer_stats_file_read , 48.Nm libhammer_stats_record_iterations , 49.Nm libhammer_stats_root_iterations , 50.Nm libhammer_stats_btree_iterations , 51.Nm libhammer_stats_btree_splits , 52.Nm libhammer_stats_btree_elements , 53.Nm libhammer_stats_btree_deletes , 54.Nm libhammer_stats_btree_inserts , 55.Nm libhammer_stats_btree_lookups , 56.Nm libhammer_stats_btree_searches , 57.Nm libhammer_btree_stats , 58.Nm libhammer_io_stats 59.Nd libhammer statistics functions 60.Sh LIBRARY 61.Lb libhammer 62.Sh SYNOPSIS 63.In libhammer.h 64.Ft int 65.Fn libhammer_stats_redo "int64_t *value" 66.Ft int 67.Fn libhammer_stats_undo "int64_t *value" 68.Ft int 69.Fn libhammer_stats_commits "int64_t *value" 70.Ft int 71.Fn libhammer_stats_inode_flushes "int64_t *value" 72.Ft int 73.Fn libhammer_stats_disk_write "int64_t *value" 74.Ft int 75.Fn libhammer_stats_disk_read "int64_t *value" 76.Ft int 77.Fn libhammer_stats_file_iopsw "int64_t *value" 78.Ft int 79.Fn libhammer_stats_file_iopsr "int64_t *value" 80.Ft int 81.Fn libhammer_stats_file_write "int64_t *value" 82.Ft int 83.Fn libhammer_stats_file_read "int64_t *value" 84.Ft int 85.Fn libhammer_stats_record_iterations "int64_t *value" 86.Ft int 87.Fn libhammer_stats_root_iterations "int64_t *value" 88.Ft int 89.Fn libhammer_stats_btree_iterations "int64_t *value" 90.Ft int 91.Fn libhammer_stats_btree_splits "int64_t *value" 92.Ft int 93.Fn libhammer_stats_btree_elements "int64_t *value" 94.Ft int 95.Fn libhammer_stats_btree_deletes "int64_t *value" 96.Ft int 97.Fn libhammer_stats_btree_inserts "int64_t *value" 98.Ft int 99.Fn libhammer_stats_btree_lookups "int64_t *value" 100.Ft int 101.Fn libhammer_stats_btree_searches "int64_t *value" 102.Ft int 103.Fn libhammer_btree_stats "struct libhammer_btree_stats *bstats" 104.Ft int 105.Fn libhammer_io_stats "struct libhammer_io_stats *iostats" 106.Sh DESCRIPTION 107The set of functions described above will help to gather 108statistics of the mounted 109.Nm HAMMER 110file systems in the system. 111.Pp 112All the functions will take argument 113.Ar value 114to store the value for the sysctl requested, except for 115.Fn libhammer_btree_stats 116and 117.Fn libhammer_io_stats 118which will take structures to store groups of values. 119.Sh RETURN VALUES 120.Rv -std 121.Sh SEE ALSO 122.Xr libhammer 3 , 123.Xr libhammer_fsinfo 3 , 124.Xr libhammer_snapshot 3 , 125.Xr HAMMER 5 , 126.Xr hammer 8 127.Sh AUTHORS 128This man page was written by 129.An Antonio Huete Jimenez Aq Mt tuxillo@quantumachine.net . 130