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Diffstat (limited to 'libglusterfs/src/latency.c')
-rw-r--r--libglusterfs/src/latency.c162
1 files changed, 36 insertions, 126 deletions
diff --git a/libglusterfs/src/latency.c b/libglusterfs/src/latency.c
index 1d75f5b98ce..d0039a1f730 100644
--- a/libglusterfs/src/latency.c
+++ b/libglusterfs/src/latency.c
@@ -21,146 +21,43 @@
#include "statedump.h"
#include "libglusterfs-messages.h"
-static int gf_set_fop_from_fn_pointer_warning;
-void
-gf_set_fop_from_fn_pointer (call_frame_t *frame, struct xlator_fops *fops, void *fn)
-{
- glusterfs_fop_t fop = -1;
-
- if (fops->stat == *(fop_stat_t *)&fn)
- fop = GF_FOP_STAT;
- else if (fops->readlink == *(fop_readlink_t *)&fn)
- fop = GF_FOP_READLINK;
- else if (fops->mknod == *(fop_mknod_t *)&fn)
- fop = GF_FOP_MKNOD;
- else if (fops->mkdir == *(fop_mkdir_t *)&fn)
- fop = GF_FOP_MKDIR;
- else if (fops->unlink == *(fop_unlink_t *)&fn)
- fop = GF_FOP_UNLINK;
- else if (fops->rmdir == *(fop_rmdir_t *)&fn)
- fop = GF_FOP_RMDIR;
- else if (fops->symlink == *(fop_symlink_t *)&fn)
- fop = GF_FOP_SYMLINK;
- else if (fops->rename == *(fop_rename_t *)&fn)
- fop = GF_FOP_RENAME;
- else if (fops->link == *(fop_link_t *)&fn)
- fop = GF_FOP_LINK;
- else if (fops->truncate == *(fop_truncate_t *)&fn)
- fop = GF_FOP_TRUNCATE;
- else if (fops->open == *(fop_open_t *)&fn)
- fop = GF_FOP_OPEN;
- else if (fops->readv == *(fop_readv_t *)&fn)
- fop = GF_FOP_READ;
- else if (fops->writev == *(fop_writev_t *)&fn)
- fop = GF_FOP_WRITE;
- else if (fops->statfs == *(fop_statfs_t *)&fn)
- fop = GF_FOP_STATFS;
- else if (fops->flush == *(fop_flush_t *)&fn)
- fop = GF_FOP_FLUSH;
- else if (fops->fsync == *(fop_fsync_t *)&fn)
- fop = GF_FOP_FSYNC;
- else if (fops->setxattr == *(fop_setxattr_t *)&fn)
- fop = GF_FOP_SETXATTR;
- else if (fops->getxattr == *(fop_getxattr_t *)&fn)
- fop = GF_FOP_GETXATTR;
- else if (fops->removexattr == *(fop_removexattr_t *)&fn)
- fop = GF_FOP_REMOVEXATTR;
- else if (fops->opendir == *(fop_opendir_t *)&fn)
- fop = GF_FOP_OPENDIR;
- else if (fops->fsyncdir == *(fop_fsyncdir_t *)&fn)
- fop = GF_FOP_FSYNCDIR;
- else if (fops->access == *(fop_access_t *)&fn)
- fop = GF_FOP_ACCESS;
- else if (fops->create == *(fop_create_t *)&fn)
- fop = GF_FOP_CREATE;
- else if (fops->ftruncate == *(fop_ftruncate_t *)&fn)
- fop = GF_FOP_FTRUNCATE;
- else if (fops->fstat == *(fop_fstat_t *)&fn)
- fop = GF_FOP_FSTAT;
- else if (fops->lk == *(fop_lk_t *)&fn)
- fop = GF_FOP_LK;
- else if (fops->lookup == *(fop_lookup_t *)&fn)
- fop = GF_FOP_LOOKUP;
- else if (fops->readdir == *(fop_readdir_t *)&fn)
- fop = GF_FOP_READDIR;
- else if (fops->inodelk == *(fop_inodelk_t *)&fn)
- fop = GF_FOP_INODELK;
- else if (fops->finodelk == *(fop_finodelk_t *)&fn)
- fop = GF_FOP_FINODELK;
- else if (fops->entrylk == *(fop_entrylk_t *)&fn)
- fop = GF_FOP_ENTRYLK;
- else if (fops->fentrylk == *(fop_fentrylk_t *)&fn)
- fop = GF_FOP_FENTRYLK;
- else if (fops->xattrop == *(fop_xattrop_t *)&fn)
- fop = GF_FOP_XATTROP;
- else if (fops->fxattrop == *(fop_fxattrop_t *)&fn)
- fop = GF_FOP_FXATTROP;
- else if (fops->fgetxattr == *(fop_fgetxattr_t *)&fn)
- fop = GF_FOP_FGETXATTR;
- else if (fops->fsetxattr == *(fop_fsetxattr_t *)&fn)
- fop = GF_FOP_FSETXATTR;
- else if (fops->rchecksum == *(fop_rchecksum_t *)&fn)
- fop = GF_FOP_RCHECKSUM;
- else if (fops->setattr == *(fop_setattr_t *)&fn)
- fop = GF_FOP_SETATTR;
- else if (fops->fsetattr == *(fop_fsetattr_t *)&fn)
- fop = GF_FOP_FSETATTR;
- else if (fops->readdirp == *(fop_readdirp_t *)&fn)
- fop = GF_FOP_READDIRP;
- else if (fops->getspec == *(fop_getspec_t *)&fn)
- fop = GF_FOP_GETSPEC;
- else if (fops->ipc == *(fop_ipc_t *)&fn)
- fop = GF_FOP_IPC;
- else {
- fop = GF_FOP_NULL;
- GF_LOG_OCCASIONALLY(gf_set_fop_from_fn_pointer_warning,
- "latency",
- GF_LOG_WARNING,
- "Unknown FOP type");
- }
-
- frame->op = fop;
-}
-
-
void
gf_update_latency (call_frame_t *frame)
{
double elapsed;
- struct timeval *begin, *end;
+ struct timespec *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];
+ if (!(begin->tv_sec && end->tv_sec))
+ goto out;
- lat->total += elapsed;
- lat->count++;
- lat->mean = lat->mean + (elapsed - lat->mean) / lat->count;
-}
+ elapsed = (end->tv_sec - begin->tv_sec) * 1e9
+ + (end->tv_nsec - begin->tv_nsec);
-void
-gf_latency_begin (call_frame_t *frame, void *fn)
-{
- gf_set_fop_from_fn_pointer (frame, frame->this->fops, fn);
+ /* Can happen mostly at initiator xlator, as STACK_WIND/UNWIND macros
+ set it right anyways for those frames */
+ if (!frame->op)
+ frame->op = frame->root->op;
- gettimeofday (&frame->begin, NULL);
-}
+ lat = &frame->this->stats.interval.latencies[frame->op];
+ if (lat->max < elapsed)
+ lat->max = elapsed;
-void
-gf_latency_end (call_frame_t *frame)
-{
- gettimeofday (&frame->end, NULL);
+ if (lat->min > elapsed)
+ lat->min = elapsed;
- gf_update_latency (frame);
+ lat->total += elapsed;
+ lat->count++;
+out:
+ return;
}
+
void
gf_proc_dump_latency_info (xlator_t *xl)
{
@@ -175,13 +72,26 @@ gf_proc_dump_latency_info (xlator_t *xl)
gf_proc_dump_build_key (key, key_prefix, "%s",
(char *)gf_fop_list[i]);
+ fop_latency_t *lat = &xl->stats.interval.latencies[i];
+
+ /* Doesn't make sense to continue if there are no fops
+ came in the given interval */
+ if (!lat->count)
+ continue;
+
gf_proc_dump_write (key, "%.03f,%"PRId64",%.03f",
- xl->latencies[i].mean,
- xl->latencies[i].count,
- xl->latencies[i].total);
+ (lat->total / lat->count), lat->count,
+ lat->total);
}
- memset (xl->latencies, 0, sizeof (xl->latencies));
+ memset (xl->stats.interval.latencies, 0,
+ sizeof (xl->stats.interval.latencies));
+
+ /* make sure 'min' is set to high value, so it would be
+ properly set later */
+ for (i = 0; i < GF_FOP_MAXVALUE; i++) {
+ xl->stats.interval.latencies[i].min = 0xffffffff;
+ }
}
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