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linux/fs/ceph/metric.h

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ceph: add dentry lease metric support For dentry leases, only count the hit/miss info triggered from the vfs calls. For the cases like request reply handling and ceph_trim_dentries, ignore them. For now, these are only viewable using debugfs. Future patches will allow the client to send the stats to the MDS. The output looks like: item total miss hit ------------------------------------------------- d_lease 11 7 141 URL: https://tracker.ceph.com/issues/43215 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2020-03-20 11:44:59 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FS_CEPH_MDS_METRIC_H
#define _FS_CEPH_MDS_METRIC_H
#include <linux/types.h>
#include <linux/percpu_counter.h>
/* This is the global metrics */
struct ceph_client_metric {
atomic64_t total_dentries;
struct percpu_counter d_lease_hit;
struct percpu_counter d_lease_mis;
ceph: add caps perf metric for each superblock Count hits and misses in the caps cache. If the client has all of the necessary caps when a task needs references, then it's counted as a hit. Any other situation is a miss. URL: https://tracker.ceph.com/issues/43215 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2020-03-20 11:45:00 +08:00
struct percpu_counter i_caps_hit;
struct percpu_counter i_caps_mis;
ceph: add dentry lease metric support For dentry leases, only count the hit/miss info triggered from the vfs calls. For the cases like request reply handling and ceph_trim_dentries, ignore them. For now, these are only viewable using debugfs. Future patches will allow the client to send the stats to the MDS. The output looks like: item total miss hit ------------------------------------------------- d_lease 11 7 141 URL: https://tracker.ceph.com/issues/43215 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2020-03-20 11:44:59 +08:00
};
extern int ceph_metric_init(struct ceph_client_metric *m);
extern void ceph_metric_destroy(struct ceph_client_metric *m);
ceph: add caps perf metric for each superblock Count hits and misses in the caps cache. If the client has all of the necessary caps when a task needs references, then it's counted as a hit. Any other situation is a miss. URL: https://tracker.ceph.com/issues/43215 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2020-03-20 11:45:00 +08:00
static inline void ceph_update_cap_hit(struct ceph_client_metric *m)
{
percpu_counter_inc(&m->i_caps_hit);
}
static inline void ceph_update_cap_mis(struct ceph_client_metric *m)
{
percpu_counter_inc(&m->i_caps_mis);
}
ceph: add dentry lease metric support For dentry leases, only count the hit/miss info triggered from the vfs calls. For the cases like request reply handling and ceph_trim_dentries, ignore them. For now, these are only viewable using debugfs. Future patches will allow the client to send the stats to the MDS. The output looks like: item total miss hit ------------------------------------------------- d_lease 11 7 141 URL: https://tracker.ceph.com/issues/43215 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2020-03-20 11:44:59 +08:00
#endif /* _FS_CEPH_MDS_METRIC_H */