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-rw-r--r--libglusterfs/src/Makefile.am4
-rw-r--r--libglusterfs/src/glusterfs.h1
-rw-r--r--libglusterfs/src/latency.c191
-rw-r--r--libglusterfs/src/latency.h36
-rw-r--r--libglusterfs/src/stack.h56
-rw-r--r--libglusterfs/src/statedump.c4
-rw-r--r--libglusterfs/src/xlator.h4
7 files changed, 292 insertions, 4 deletions
diff --git a/libglusterfs/src/Makefile.am b/libglusterfs/src/Makefile.am
index 755c2d807ce..82c634dea61 100644
--- a/libglusterfs/src/Makefile.am
+++ b/libglusterfs/src/Makefile.am
@@ -6,9 +6,9 @@ libglusterfs_la_LIBADD = @LEXLIB@
lib_LTLIBRARIES = libglusterfs.la
-libglusterfs_la_SOURCES = dict.c spec.lex.c y.tab.c xlator.c logging.c hashfn.c defaults.c scheduler.c common-utils.c transport.c timer.c inode.c call-stub.c compat.c authenticate.c fd.c compat-errno.c event.c mem-pool.c gf-dirent.c syscall.c iobuf.c globals.c statedump.c stack.c checksum.c md5.c $(CONTRIBDIR)/rbtree/rb.c rbthash.c
+libglusterfs_la_SOURCES = dict.c spec.lex.c y.tab.c xlator.c logging.c hashfn.c defaults.c scheduler.c common-utils.c transport.c timer.c inode.c call-stub.c compat.c authenticate.c fd.c compat-errno.c event.c mem-pool.c gf-dirent.c syscall.c iobuf.c globals.c statedump.c stack.c checksum.c md5.c $(CONTRIBDIR)/rbtree/rb.c rbthash.c latency.c
-noinst_HEADERS = common-utils.h defaults.h dict.h glusterfs.h hashfn.h logging.h protocol.h scheduler.h xlator.h transport.h stack.h timer.h list.h inode.h call-stub.h compat.h authenticate.h fd.h revision.h compat-errno.h event.h mem-pool.h byte-order.h gf-dirent.h locking.h syscall.h iobuf.h globals.h statedump.h checksum.h md5.h $(CONTRIBDIR)/rbtree/rb.h rbthash.h iatt.h
+noinst_HEADERS = common-utils.h defaults.h dict.h glusterfs.h hashfn.h logging.h protocol.h scheduler.h xlator.h transport.h stack.h timer.h list.h inode.h call-stub.h compat.h authenticate.h fd.h revision.h compat-errno.h event.h mem-pool.h byte-order.h gf-dirent.h locking.h syscall.h iobuf.h globals.h statedump.h checksum.h md5.h $(CONTRIBDIR)/rbtree/rb.h rbthash.h iatt.h latency.h
EXTRA_DIST = spec.l spec.y
diff --git a/libglusterfs/src/glusterfs.h b/libglusterfs/src/glusterfs.h
index 4abde409b92..cf87af7d32b 100644
--- a/libglusterfs/src/glusterfs.h
+++ b/libglusterfs/src/glusterfs.h
@@ -260,6 +260,7 @@ struct _glusterfs_ctx {
int xl_count;
uint32_t volfile_checksum;
size_t page_size;
+ unsigned char measure_latency; /* toggle switch for latency measurement */
};
typedef struct _glusterfs_ctx glusterfs_ctx_t;
diff --git a/libglusterfs/src/latency.c b/libglusterfs/src/latency.c
new file mode 100644
index 00000000000..bccc780a26f
--- /dev/null
+++ b/libglusterfs/src/latency.c
@@ -0,0 +1,191 @@
+/*
+ Copyright (c) 2009 Gluster, Inc. <http://www.gluster.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+
+/*
+ * This file contains functions to support dumping of
+ * latencies of FOPs broken down by subvolumes.
+ */
+
+#include "glusterfs.h"
+#include "stack.h"
+#include "xlator.h"
+#include "common-utils.h"
+#include "statedump.h"
+
+
+void
+gf_set_fop_from_fn_pointer (call_frame_t *frame, struct xlator_fops *fops,
+ struct xlator_mops *mops, void *fn)
+{
+ glusterfs_fop_t fop = -1;
+
+ if (fops->stat == fn)
+ fop = GF_FOP_STAT;
+ else if (fops->readlink == fn)
+ fop = GF_FOP_READLINK;
+ else if (fops->mknod == fn)
+ fop = GF_FOP_MKNOD;
+ else if (fops->mkdir == fn)
+ fop = GF_FOP_MKDIR;
+ else if (fops->unlink == fn)
+ fop = GF_FOP_UNLINK;
+ else if (fops->rmdir == fn)
+ fop = GF_FOP_RMDIR;
+ else if (fops->symlink == fn)
+ fop = GF_FOP_SYMLINK;
+ else if (fops->rename == fn)
+ fop = GF_FOP_RENAME;
+ else if (fops->link == fn)
+ fop = GF_FOP_LINK;
+ else if (fops->truncate == fn)
+ fop = GF_FOP_TRUNCATE;
+ else if (fops->open == fn)
+ fop = GF_FOP_OPEN;
+ else if (fops->readv == fn)
+ fop = GF_FOP_READ;
+ else if (fops->writev == fn)
+ fop = GF_FOP_WRITE;
+ else if (fops->statfs == fn)
+ fop = GF_FOP_STATFS;
+ else if (fops->flush == fn)
+ fop = GF_FOP_FLUSH;
+ else if (fops->fsync == fn)
+ fop = GF_FOP_FSYNC;
+ else if (fops->setxattr == fn)
+ fop = GF_FOP_SETXATTR;
+ else if (fops->getxattr == fn)
+ fop = GF_FOP_GETXATTR;
+ else if (fops->removexattr == fn)
+ fop = GF_FOP_REMOVEXATTR;
+ else if (fops->opendir == fn)
+ fop = GF_FOP_OPENDIR;
+ else if (fops->fsyncdir == fn)
+ fop = GF_FOP_FSYNCDIR;
+ else if (fops->access == fn)
+ fop = GF_FOP_ACCESS;
+ else if (fops->create == fn)
+ fop = GF_FOP_CREATE;
+ else if (fops->ftruncate == fn)
+ fop = GF_FOP_FTRUNCATE;
+ else if (fops->fstat == fn)
+ fop = GF_FOP_FSTAT;
+ else if (fops->lk == fn)
+ fop = GF_FOP_LK;
+ else if (fops->lookup == fn)
+ fop = GF_FOP_LOOKUP;
+ else if (fops->readdir == fn)
+ fop = GF_FOP_READDIR;
+ else if (fops->inodelk == fn)
+ fop = GF_FOP_INODELK;
+ else if (fops->finodelk == fn)
+ fop = GF_FOP_FINODELK;
+ else if (fops->entrylk == fn)
+ fop = GF_FOP_ENTRYLK;
+ else if (fops->fentrylk == fn)
+ fop = GF_FOP_FENTRYLK;
+ else if (fops->checksum == fn)
+ fop = GF_FOP_CHECKSUM;
+ else if (fops->xattrop == fn)
+ fop = GF_FOP_XATTROP;
+ else if (fops->fxattrop == fn)
+ fop = GF_FOP_FXATTROP;
+ else if (fops->fgetxattr == fn)
+ fop = GF_FOP_FGETXATTR;
+ else if (fops->fsetxattr == fn)
+ fop = GF_FOP_FSETXATTR;
+ else if (fops->rchecksum == fn)
+ fop = GF_FOP_RCHECKSUM;
+ else if (fops->setattr == fn)
+ fop = GF_FOP_SETATTR;
+ else if (fops->fsetattr == fn)
+ fop = GF_FOP_FSETATTR;
+ else if (fops->readdirp == fn)
+ fop = GF_FOP_READDIRP;
+ else {
+ if (mops->getspec == fn)
+ fop = GF_MOP_GETSPEC;
+ else if (mops->log == fn)
+ fop = GF_MOP_LOG;
+ else {
+ fop = -1;
+ }
+ }
+
+ frame->op = fop;
+}
+
+
+void
+gf_update_latency (call_frame_t *frame)
+{
+ double elapsed;
+ struct timeval *begin, *end;
+
+ fop_latency_t *lat;
+
+ begin = &frame->begin;
+ end = &frame->end;
+
+ elapsed = (end->tv_sec - begin->tv_sec) * 1e6
+ + (end->tv_usec - begin->tv_usec);
+
+ lat = &frame->this->latencies[frame->op];
+
+ lat->total += elapsed;
+ lat->count++;
+ lat->mean = lat->mean + (elapsed - lat->mean) / lat->count;
+}
+
+
+void
+gf_proc_dump_latency_info (xlator_t *xl)
+{
+ char key_prefix[GF_DUMP_MAX_BUF_LEN];
+ char key[GF_DUMP_MAX_BUF_LEN];
+ int i;
+
+ snprintf (key_prefix, GF_DUMP_MAX_BUF_LEN, "%s.latency", xl->name);
+ gf_proc_dump_add_section (key_prefix);
+
+ for (i = 0; i < GF_FOP_MAXVALUE; i++) {
+ gf_proc_dump_build_key (key, key_prefix, gf_fop_list[i]);
+
+ gf_proc_dump_write (key, "%.03f,%"PRId64",%.03f",
+ xl->latencies[i].mean,
+ xl->latencies[i].count,
+ xl->latencies[i].total);
+ }
+}
+
+
+void
+gf_latency_toggle (int signum)
+{
+ glusterfs_ctx_t *ctx = NULL;
+
+ ctx = get_global_ctx_ptr ();
+
+ if (ctx) {
+ ctx->measure_latency = !ctx->measure_latency;
+ gf_log ("[core]", GF_LOG_NORMAL,
+ "Latency measurement turned %s",
+ ctx->measure_latency ? "on" : "off");
+ }
+}
diff --git a/libglusterfs/src/latency.h b/libglusterfs/src/latency.h
new file mode 100644
index 00000000000..ba7d76cddca
--- /dev/null
+++ b/libglusterfs/src/latency.h
@@ -0,0 +1,36 @@
+/*
+ Copyright (c) 2009 Gluster, Inc. <http://www.gluster.com>
+ This file is part of GlusterFS.
+
+ GlusterFS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __LATENCY_H__
+#define __LATENCY_H__
+
+
+typedef struct fop_latency {
+ uint64_t min; /* min time for the call (microseconds) */
+ uint64_t max; /* max time for the call (microseconds) */
+ double total; /* total time (microseconds) */
+ double std; /* standard deviation */
+ double mean; /* mean (microseconds) */
+ uint64_t count;
+} fop_latency_t;
+
+void
+gf_latency_toggle (int signum);
+
+#endif /* __LATENCY_H__ */
diff --git a/libglusterfs/src/stack.h b/libglusterfs/src/stack.h
index cc059f06873..25925f7a699 100644
--- a/libglusterfs/src/stack.h
+++ b/libglusterfs/src/stack.h
@@ -37,6 +37,8 @@ typedef struct _call_frame_t call_frame_t;
struct _call_pool_t;
typedef struct _call_pool_t call_pool_t;
+#include <sys/time.h>
+
#include "xlator.h"
#include "dict.h"
#include "list.h"
@@ -76,6 +78,10 @@ struct _call_frame_t {
gf_lock_t lock;
void *cookie; /* unique cookie */
gf_boolean_t complete;
+
+ glusterfs_fop_t op;
+ struct timeval begin; /* when this frame was created */
+ struct timeval end; /* when this frame completed */
};
struct _call_stack_t {
@@ -113,6 +119,16 @@ struct _call_stack_t {
} \
} while (0); \
+struct xlator_fops;
+struct xlator_mops;
+
+void
+gf_set_fop_from_fn_pointer (call_frame_t *frame, struct xlator_fops *fops,
+ struct xlator_mops *mops, void *fn);
+
+void
+gf_update_latency (call_frame_t *frame);
+
static inline void
FRAME_DESTROY (call_frame_t *frame)
{
@@ -130,6 +146,13 @@ FRAME_DESTROY (call_frame_t *frame)
static inline void
STACK_DESTROY (call_stack_t *stack)
{
+ glusterfs_ctx_t *ctx = get_global_ctx_ptr ();
+
+ if (ctx && ctx->measure_latency) {
+ gettimeofday (&stack->frames.end, NULL);
+ gf_update_latency (&stack->frames);
+ }
+
LOCK (&stack->pool->lock);
{
list_del_init (&stack->all_frames);
@@ -143,6 +166,10 @@ STACK_DESTROY (call_stack_t *stack)
LOCK_DESTROY (&stack->frames.lock);
while (stack->frames.next) {
+ if (ctx && ctx->measure_latency) {
+ gf_update_latency (stack->frames.next);
+ }
+
FRAME_DESTROY (stack->frames.next);
}
FREE (stack);
@@ -173,7 +200,12 @@ STACK_DESTROY (call_stack_t *stack)
_new->cookie = _new; \
LOCK_INIT (&_new->lock); \
frame->ref_count++; \
- \
+ \
+ if (((xlator_t *) obj)->ctx->measure_latency) { \
+ gettimeofday (&_new->begin, NULL); \
+ gf_set_fop_from_fn_pointer (_new, ((xlator_t *)obj)->fops, ((xlator_t *)obj)->mops, fn); \
+ } \
+ \
old_THIS = THIS; \
THIS = obj; \
fn (_new, obj, params); \
@@ -203,7 +235,12 @@ STACK_DESTROY (call_stack_t *stack)
LOCK_INIT (&_new->lock); \
frame->ref_count++; \
fn##_cbk = rfn; \
- \
+ \
+ if (((xlator_t *) obj)->ctx->measure_latency) { \
+ gettimeofday (&_new->begin, NULL); \
+ gf_set_fop_from_fn_pointer (_new, ((xlator_t *)obj)->fops, ((xlator_t *)obj)->mops, fn); \
+ } \
+ \
old_THIS = THIS; \
THIS = obj; \
fn (_new, obj, params); \
@@ -224,6 +261,11 @@ STACK_DESTROY (call_stack_t *stack)
old_THIS = THIS; \
THIS = _parent->this; \
frame->complete = _gf_true; \
+ \
+ if (((xlator_t *) old_THIS)->ctx->measure_latency) { \
+ gettimeofday (&frame->end, NULL); \
+ } \
+ \
fn (_parent, frame->cookie, _parent->this, params); \
THIS = old_THIS; \
} while (0)
@@ -242,6 +284,11 @@ STACK_DESTROY (call_stack_t *stack)
old_THIS = THIS; \
THIS = _parent->this; \
frame->complete = _gf_true; \
+ \
+ if (((xlator_t *) old_THIS)->ctx->measure_latency) { \
+ gettimeofday (&frame->end, NULL); \
+ } \
+ \
fn (_parent, frame->cookie, _parent->this, params); \
THIS = old_THIS; \
} while (0)
@@ -294,6 +341,7 @@ static inline call_frame_t *
create_frame (xlator_t *xl, call_pool_t *pool)
{
call_stack_t *stack = NULL;
+ glusterfs_ctx_t *ctx = get_global_ctx_ptr ();
if (!xl || !pool) {
return NULL;
@@ -316,6 +364,10 @@ create_frame (xlator_t *xl, call_pool_t *pool)
LOCK_INIT (&stack->frames.lock);
+ if (ctx && ctx->measure_latency) {
+ gettimeofday (&stack->frames.begin, NULL);
+ }
+
return &stack->frames;
}
diff --git a/libglusterfs/src/statedump.c b/libglusterfs/src/statedump.c
index 7f1e3e24196..4e42280068f 100644
--- a/libglusterfs/src/statedump.c
+++ b/libglusterfs/src/statedump.c
@@ -141,6 +141,7 @@ gf_proc_dump_mem_info ()
}
+void gf_proc_dump_latency_info (xlator_t *xl);
void
gf_proc_dump_xlator_info (xlator_t *this_xl)
@@ -150,6 +151,8 @@ gf_proc_dump_xlator_info (xlator_t *this_xl)
return;
while (this_xl) {
+ gf_proc_dump_latency_info (this_xl);
+
if (!this_xl->dumpops) {
this_xl = this_xl->next;
continue;
@@ -160,6 +163,7 @@ gf_proc_dump_xlator_info (xlator_t *this_xl)
this_xl->dumpops->inode(this_xl);
if (this_xl->dumpops->fd)
this_xl->dumpops->fd(this_xl);
+
this_xl = this_xl->next;
}
diff --git a/libglusterfs/src/xlator.h b/libglusterfs/src/xlator.h
index 8cde2ed31c3..993679b2500 100644
--- a/libglusterfs/src/xlator.h
+++ b/libglusterfs/src/xlator.h
@@ -36,6 +36,7 @@
#include "dict.h"
#include "compat.h"
#include "list.h"
+#include "latency.h"
#define FIRST_CHILD(xl) (xl->children->xlator)
@@ -847,6 +848,9 @@ struct _xlator {
int32_t (*init) (xlator_t *this);
event_notify_fn_t notify;
+ /* for latency measurement */
+ fop_latency_t latencies[GF_FOP_MAXVALUE];
+
/* Misc */
glusterfs_ctx_t *ctx;
inode_table_t *itable;
generated by cgit (git 2.34.1) at 2024-11-19 04:25:09 +0000