From mboxrd@z Thu Jan 1 00:00:00 1970 From: xiubli@redhat.com Subject: [PATCH v6 2/9] ceph: add caps perf metric for each session Date: Mon, 10 Feb 2020 00:34:00 -0500 Message-ID: <20200210053407.37237-3-xiubli@redhat.com> References: <20200210053407.37237-1-xiubli@redhat.com> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: Received: from us-smtp-1.mimecast.com ([207.211.31.81]:48787 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726950AbgBJFea (ORCPT ); Mon, 10 Feb 2020 00:34:30 -0500 In-Reply-To: <20200210053407.37237-1-xiubli@redhat.com> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: jlayton@kernel.org, idryomov@gmail.com Cc: sage@redhat.com, zyan@redhat.com, pdonnell@redhat.com, ceph-devel@vger.kernel.org, Xiubo Li From: Xiubo Li This will fulfill the cap hit/mis metric stuff per-superblock, it will count the hit/mis counters based each inode, and if one inode's 'issued & ~revoking =3D=3D mask' will mean a hit, or a miss. item total miss hit ------------------------------------------------- caps 295 107 4119 URL: https://tracker.ceph.com/issues/43215 Signed-off-by: Xiubo Li --- fs/ceph/acl.c | 2 ++ fs/ceph/caps.c | 29 +++++++++++++++++++++++++++++ fs/ceph/debugfs.c | 16 ++++++++++++++++ fs/ceph/dir.c | 9 +++++++-- fs/ceph/file.c | 2 ++ fs/ceph/mds_client.c | 26 ++++++++++++++++++++++---- fs/ceph/metric.h | 3 +++ fs/ceph/quota.c | 9 +++++++-- fs/ceph/super.h | 9 +++++++++ fs/ceph/xattr.c | 17 ++++++++++++++--- 10 files changed, 111 insertions(+), 11 deletions(-) diff --git a/fs/ceph/acl.c b/fs/ceph/acl.c index 26be6520d3fb..58e119e3519f 100644 --- a/fs/ceph/acl.c +++ b/fs/ceph/acl.c @@ -22,6 +22,8 @@ static inline void ceph_set_cached_acl(struct inode *in= ode, struct ceph_inode_info *ci =3D ceph_inode(inode); =20 spin_lock(&ci->i_ceph_lock); + __ceph_caps_metric(ci, CEPH_CAP_XATTR_SHARED); + if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0)) set_cached_acl(inode, type, acl); else diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 7fc87b693ba4..b4f122eb74bb 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -818,6 +818,32 @@ int __ceph_caps_issued(struct ceph_inode_info *ci, i= nt *implemented) return have; } =20 +/* + * Counts the cap metric. + * + * This will try to traverse all the ci->i_caps, if we can + * get all the cap 'mask' it will count the hit, or the mis. + */ +void __ceph_caps_metric(struct ceph_inode_info *ci, int mask) +{ + struct ceph_mds_client *mdsc =3D + ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; + struct ceph_client_metric *metric =3D &mdsc->metric; + int issued; + + lockdep_assert_held(&ci->i_ceph_lock); + + if (mask <=3D 0) + return; + + issued =3D __ceph_caps_issued(ci, NULL); + + if ((mask & issued) =3D=3D mask) + percpu_counter_inc(&metric->i_caps_hit); + else + percpu_counter_inc(&metric->i_caps_mis); +} + /* * Get cap bits issued by caps other than @ocap */ @@ -2758,6 +2784,7 @@ int ceph_try_get_caps(struct inode *inode, int need= , int want, BUG_ON(want & ~(CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO | CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL | CEPH_CAP_ANY_DIR_OPS)); + ceph_caps_metric(ceph_inode(inode), need | want); ret =3D try_get_cap_refs(inode, need, want, 0, nonblock, got); return ret =3D=3D -EAGAIN ? 0 : ret; } @@ -2784,6 +2811,8 @@ int ceph_get_caps(struct file *filp, int need, int = want, fi->filp_gen !=3D READ_ONCE(fsc->filp_gen)) return -EBADF; =20 + ceph_caps_metric(ci, need | want); + while (true) { if (endoff > 0) check_max_size(inode, endoff); diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c index 15975ba95d9a..c83e52bd9961 100644 --- a/fs/ceph/debugfs.c +++ b/fs/ceph/debugfs.c @@ -128,6 +128,7 @@ static int metric_show(struct seq_file *s, void *p) { struct ceph_fs_client *fsc =3D s->private; struct ceph_mds_client *mdsc =3D fsc->mdsc; + int i, nr_caps =3D 0; =20 seq_printf(s, "item total miss hit\n"); seq_printf(s, "-------------------------------------------------\n"); @@ -137,6 +138,21 @@ static int metric_show(struct seq_file *s, void *p) percpu_counter_sum(&mdsc->metric.d_lease_mis), percpu_counter_sum(&mdsc->metric.d_lease_hit)); =20 + mutex_lock(&mdsc->mutex); + for (i =3D 0; i < mdsc->max_sessions; i++) { + struct ceph_mds_session *s; + + s =3D __ceph_lookup_mds_session(mdsc, i); + if (!s) + continue; + nr_caps +=3D s->s_nr_caps; + ceph_put_mds_session(s); + } + mutex_unlock(&mdsc->mutex); + seq_printf(s, "%-14s%-16d%-16lld%lld\n", "caps", nr_caps, + percpu_counter_sum(&mdsc->metric.i_caps_mis), + percpu_counter_sum(&mdsc->metric.i_caps_hit)); + return 0; } =20 diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 4771bf61d562..ffeaff5bf211 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -313,7 +313,7 @@ static int ceph_readdir(struct file *file, struct dir= _context *ctx) struct ceph_fs_client *fsc =3D ceph_inode_to_client(inode); struct ceph_mds_client *mdsc =3D fsc->mdsc; int i; - int err; + int err, ret =3D -1; unsigned frag =3D -1; struct ceph_mds_reply_info_parsed *rinfo; =20 @@ -346,13 +346,16 @@ static int ceph_readdir(struct file *file, struct d= ir_context *ctx) !ceph_test_mount_opt(fsc, NOASYNCREADDIR) && ceph_snap(inode) !=3D CEPH_SNAPDIR && __ceph_dir_is_complete_ordered(ci) && - __ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1)) { + (ret =3D __ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1))) { int shared_gen =3D atomic_read(&ci->i_shared_gen); + __ceph_caps_metric(ci, CEPH_CAP_XATTR_SHARED); spin_unlock(&ci->i_ceph_lock); err =3D __dcache_readdir(file, ctx, shared_gen); if (err !=3D -EAGAIN) return err; } else { + if (ret !=3D -1) + __ceph_caps_metric(ci, CEPH_CAP_XATTR_SHARED); spin_unlock(&ci->i_ceph_lock); } =20 @@ -757,6 +760,8 @@ static struct dentry *ceph_lookup(struct inode *dir, = struct dentry *dentry, struct ceph_dentry_info *di =3D ceph_dentry(dentry); =20 spin_lock(&ci->i_ceph_lock); + __ceph_caps_metric(ci, CEPH_CAP_FILE_SHARED); + dout(" dir %p flags are %d\n", dir, ci->i_ceph_flags); if (strncmp(dentry->d_name.name, fsc->mount_options->snapdir_name, diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 4d1b5cc6dd3b..96803500b712 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -384,6 +384,8 @@ int ceph_open(struct inode *inode, struct file *file) * asynchronously. */ spin_lock(&ci->i_ceph_lock); + __ceph_caps_metric(ci, wanted); + if (__ceph_is_any_real_caps(ci) && (((fmode & CEPH_FILE_MODE_WR) =3D=3D 0) || ci->i_auth_cap)) { int mds_wanted =3D __ceph_caps_mds_wanted(ci, true); diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index a24fd00676b8..1431e52e9558 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -4169,13 +4169,29 @@ static int ceph_mdsc_metric_init(struct ceph_clie= nt_metric *metric) ret =3D percpu_counter_init(&metric->d_lease_hit, 0, GFP_KERNEL); if (ret) return ret; + ret =3D percpu_counter_init(&metric->d_lease_mis, 0, GFP_KERNEL); - if (ret) { - percpu_counter_destroy(&metric->d_lease_hit); - return ret; - } + if (ret) + goto err_d_lease_mis; + + ret =3D percpu_counter_init(&metric->i_caps_hit, 0, GFP_KERNEL); + if (ret) + goto err_i_caps_hit; + + ret =3D percpu_counter_init(&metric->i_caps_mis, 0, GFP_KERNEL); + if (ret) + goto err_i_caps_mis; =20 return 0; + +err_i_caps_mis: + percpu_counter_destroy(&metric->i_caps_hit); +err_i_caps_hit: + percpu_counter_destroy(&metric->d_lease_mis); +err_d_lease_mis: + percpu_counter_destroy(&metric->d_lease_hit); + + return ret; } =20 int ceph_mdsc_init(struct ceph_fs_client *fsc) @@ -4515,6 +4531,8 @@ void ceph_mdsc_destroy(struct ceph_fs_client *fsc) =20 ceph_mdsc_stop(mdsc); =20 + percpu_counter_destroy(&mdsc->metric.i_caps_mis); + percpu_counter_destroy(&mdsc->metric.i_caps_hit); percpu_counter_destroy(&mdsc->metric.d_lease_mis); percpu_counter_destroy(&mdsc->metric.d_lease_hit); =20 diff --git a/fs/ceph/metric.h b/fs/ceph/metric.h index 998fe2a643cf..e2fceb38a924 100644 --- a/fs/ceph/metric.h +++ b/fs/ceph/metric.h @@ -7,5 +7,8 @@ struct ceph_client_metric { atomic64_t total_dentries; struct percpu_counter d_lease_hit; struct percpu_counter d_lease_mis; + + struct percpu_counter i_caps_hit; + struct percpu_counter i_caps_mis; }; #endif /* _FS_CEPH_MDS_METRIC_H */ diff --git a/fs/ceph/quota.c b/fs/ceph/quota.c index de56dee60540..4ce2f658e63d 100644 --- a/fs/ceph/quota.c +++ b/fs/ceph/quota.c @@ -147,9 +147,14 @@ static struct inode *lookup_quotarealm_inode(struct = ceph_mds_client *mdsc, return NULL; } if (qri->inode) { + struct ceph_inode_info *ci =3D ceph_inode(qri->inode); + int ret; + + ceph_caps_metric(ci, CEPH_STAT_CAP_INODE); + /* get caps */ - int ret =3D __ceph_do_getattr(qri->inode, NULL, - CEPH_STAT_CAP_INODE, true); + ret =3D __ceph_do_getattr(qri->inode, NULL, + CEPH_STAT_CAP_INODE, true); if (ret >=3D 0) in =3D qri->inode; else diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 5241efe0f9d0..44b9a971ec9a 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -641,6 +641,14 @@ static inline bool __ceph_is_any_real_caps(struct ce= ph_inode_info *ci) return !RB_EMPTY_ROOT(&ci->i_caps); } =20 +extern void __ceph_caps_metric(struct ceph_inode_info *ci, int mask); +static inline void ceph_caps_metric(struct ceph_inode_info *ci, int mask= ) +{ + spin_lock(&ci->i_ceph_lock); + __ceph_caps_metric(ci, mask); + spin_unlock(&ci->i_ceph_lock); +} + extern int __ceph_caps_issued(struct ceph_inode_info *ci, int *implement= ed); extern int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask,= int t); extern int __ceph_caps_issued_other(struct ceph_inode_info *ci, @@ -927,6 +935,7 @@ extern int __ceph_do_getattr(struct inode *inode, str= uct page *locked_page, int mask, bool force); static inline int ceph_do_getattr(struct inode *inode, int mask, bool fo= rce) { + ceph_caps_metric(ceph_inode(inode), mask); return __ceph_do_getattr(inode, NULL, mask, force); } extern int ceph_permission(struct inode *inode, int mask); diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index 7b8a070a782d..9b28e87b6719 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -829,6 +829,7 @@ ssize_t __ceph_getxattr(struct inode *inode, const ch= ar *name, void *value, struct ceph_vxattr *vxattr =3D NULL; int req_mask; ssize_t err; + int ret =3D -1; =20 /* let's see if a virtual xattr was requested */ vxattr =3D ceph_match_vxattr(inode, name); @@ -856,7 +857,9 @@ ssize_t __ceph_getxattr(struct inode *inode, const ch= ar *name, void *value, =20 if (ci->i_xattrs.version =3D=3D 0 || !((req_mask & CEPH_CAP_XATTR_SHARED) || - __ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 1))) { + (ret =3D __ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 1))))= { + if (ret !=3D -1) + __ceph_caps_metric(ci, CEPH_CAP_XATTR_SHARED); spin_unlock(&ci->i_ceph_lock); =20 /* security module gets xattr while filling trace */ @@ -871,6 +874,9 @@ ssize_t __ceph_getxattr(struct inode *inode, const ch= ar *name, void *value, if (err) return err; spin_lock(&ci->i_ceph_lock); + } else { + if (ret !=3D -1) + __ceph_caps_metric(ci, CEPH_CAP_XATTR_SHARED); } =20 err =3D __build_xattrs(inode); @@ -907,19 +913,24 @@ ssize_t ceph_listxattr(struct dentry *dentry, char = *names, size_t size) struct ceph_inode_info *ci =3D ceph_inode(inode); bool len_only =3D (size =3D=3D 0); u32 namelen; - int err; + int err, ret =3D -1; =20 spin_lock(&ci->i_ceph_lock); dout("listxattr %p ver=3D%lld index_ver=3D%lld\n", inode, ci->i_xattrs.version, ci->i_xattrs.index_version); =20 if (ci->i_xattrs.version =3D=3D 0 || - !__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 1)) { + !(ret =3D __ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 1))) { + if (ret !=3D -1) + __ceph_caps_metric(ci, CEPH_CAP_XATTR_SHARED); spin_unlock(&ci->i_ceph_lock); err =3D ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR, true); if (err) return err; spin_lock(&ci->i_ceph_lock); + } else { + if (ret !=3D -1) + __ceph_caps_metric(ci, CEPH_CAP_XATTR_SHARED); } =20 err =3D __build_xattrs(inode); --=20 2.21.0