diff options
Diffstat (limited to 'generic/openzfs_sysctl.c')
| -rw-r--r-- | generic/openzfs_sysctl.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/generic/openzfs_sysctl.c b/generic/openzfs_sysctl.c new file mode 100644 index 0000000..bcd37dc --- /dev/null +++ b/generic/openzfs_sysctl.c @@ -0,0 +1,104 @@ +/* +htop - generic/openzfs_sysctl.c +(C) 2014 Hisham H. Muhammad +Released under the GNU GPLv2+, see the COPYING file +in the source distribution for its full text. +*/ + +#include "generic/openzfs_sysctl.h" + +#include <stdlib.h> +#include <sys/types.h> // IWYU pragma: keep +#include <sys/sysctl.h> // needs <sys/types.h> for u_int with gcc + +#include "zfs/ZfsArcStats.h" + + +static int MIB_kstat_zfs_misc_arcstats_size[5]; +static int MIB_kstat_zfs_misc_arcstats_c_min[5]; +static int MIB_kstat_zfs_misc_arcstats_c_max[5]; +static int MIB_kstat_zfs_misc_arcstats_mfu_size[5]; +static int MIB_kstat_zfs_misc_arcstats_mru_size[5]; +static int MIB_kstat_zfs_misc_arcstats_anon_size[5]; +static int MIB_kstat_zfs_misc_arcstats_hdr_size[5]; +static int MIB_kstat_zfs_misc_arcstats_other_size[5]; +static int MIB_kstat_zfs_misc_arcstats_compressed_size[5]; +static int MIB_kstat_zfs_misc_arcstats_uncompressed_size[5]; + +void openzfs_sysctl_init(ZfsArcStats* stats) { + size_t len; + unsigned long long int arcSize; + + len = sizeof(arcSize); + if (sysctlbyname("kstat.zfs.misc.arcstats.size", &arcSize, &len, NULL, 0) == 0 && arcSize != 0) { + stats->enabled = 1; + + len = 5; + sysctlnametomib("kstat.zfs.misc.arcstats.size", MIB_kstat_zfs_misc_arcstats_size, &len); + + sysctlnametomib("kstat.zfs.misc.arcstats.c_min", MIB_kstat_zfs_misc_arcstats_c_min, &len); + sysctlnametomib("kstat.zfs.misc.arcstats.c_max", MIB_kstat_zfs_misc_arcstats_c_max, &len); + sysctlnametomib("kstat.zfs.misc.arcstats.mfu_size", MIB_kstat_zfs_misc_arcstats_mfu_size, &len); + sysctlnametomib("kstat.zfs.misc.arcstats.mru_size", MIB_kstat_zfs_misc_arcstats_mru_size, &len); + sysctlnametomib("kstat.zfs.misc.arcstats.anon_size", MIB_kstat_zfs_misc_arcstats_anon_size, &len); + sysctlnametomib("kstat.zfs.misc.arcstats.hdr_size", MIB_kstat_zfs_misc_arcstats_hdr_size, &len); + sysctlnametomib("kstat.zfs.misc.arcstats.other_size", MIB_kstat_zfs_misc_arcstats_other_size, &len); + + if (sysctlnametomib("kstat.zfs.misc.arcstats.compressed_size", MIB_kstat_zfs_misc_arcstats_compressed_size, &len) == 0) { + stats->isCompressed = 1; + sysctlnametomib("kstat.zfs.misc.arcstats.uncompressed_size", MIB_kstat_zfs_misc_arcstats_uncompressed_size, &len); + } else { + stats->isCompressed = 0; + } + } else { + stats->enabled = 0; + } +} + +void openzfs_sysctl_updateArcStats(ZfsArcStats* stats) { + size_t len; + + if (stats->enabled) { + len = sizeof(stats->size); + sysctl(MIB_kstat_zfs_misc_arcstats_size, 5, &(stats->size), &len, NULL, 0); + stats->size /= 1024; + + len = sizeof(stats->min); + sysctl(MIB_kstat_zfs_misc_arcstats_c_min, 5, &(stats->min), &len, NULL, 0); + stats->min /= 1024; + + len = sizeof(stats->max); + sysctl(MIB_kstat_zfs_misc_arcstats_c_max, 5, &(stats->max), &len, NULL, 0); + stats->max /= 1024; + + len = sizeof(stats->MFU); + sysctl(MIB_kstat_zfs_misc_arcstats_mfu_size, 5, &(stats->MFU), &len, NULL, 0); + stats->MFU /= 1024; + + len = sizeof(stats->MRU); + sysctl(MIB_kstat_zfs_misc_arcstats_mru_size, 5, &(stats->MRU), &len, NULL, 0); + stats->MRU /= 1024; + + len = sizeof(stats->anon); + sysctl(MIB_kstat_zfs_misc_arcstats_anon_size, 5, &(stats->anon), &len, NULL, 0); + stats->anon /= 1024; + + len = sizeof(stats->header); + sysctl(MIB_kstat_zfs_misc_arcstats_hdr_size, 5, &(stats->header), &len, NULL, 0); + stats->header /= 1024; + + len = sizeof(stats->other); + sysctl(MIB_kstat_zfs_misc_arcstats_other_size, 5, &(stats->other), &len, NULL, 0); + stats->other /= 1024; + + if (stats->isCompressed) { + len = sizeof(stats->compressed); + sysctl(MIB_kstat_zfs_misc_arcstats_compressed_size, 5, &(stats->compressed), &len, NULL, 0); + stats->compressed /= 1024; + + len = sizeof(stats->uncompressed); + sysctl(MIB_kstat_zfs_misc_arcstats_uncompressed_size, 5, &(stats->uncompressed), &len, NULL, 0); + stats->uncompressed /= 1024; + } + } +} |