diff options
Diffstat (limited to 'libglusterfs/src/latency.c')
| -rw-r--r-- | libglusterfs/src/latency.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/libglusterfs/src/latency.c b/libglusterfs/src/latency.c new file mode 100644 index 000000000..b22f72950 --- /dev/null +++ b/libglusterfs/src/latency.c @@ -0,0 +1,189 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ + + +/* + * 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, 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 + 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_latency_begin (call_frame_t *frame, void *fn) +{ + gf_set_fop_from_fn_pointer (frame, frame->this->fops, fn); + + gettimeofday (&frame->begin, NULL); +} + + +void +gf_latency_end (call_frame_t *frame) +{ + gettimeofday (&frame->end, NULL); + + gf_update_latency (frame); +} + +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, + (char *)gf_fop_list[i]); + + gf_proc_dump_write (key, "%.03f,%"PRId64",%.03f", + xl->latencies[i].mean, + xl->latencies[i].count, + xl->latencies[i].total); + } + + memset (xl->latencies, 0, sizeof (xl->latencies)); +} + + +void +gf_latency_toggle (int signum, glusterfs_ctx_t *ctx) +{ + if (ctx) { + ctx->measure_latency = !ctx->measure_latency; + gf_log ("[core]", GF_LOG_INFO, + "Latency measurement turned %s", + ctx->measure_latency ? "on" : "off"); + } +} |