/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2002, 2003 Cluster File Systems, Inc. * * This file is part of Lustre, http://www.lustre.org. * * Lustre is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * Lustre 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 Lustre; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #define DEBUG_SUBSYSTEM S_CLASS #include #include #include #include #include #include "filter_internal.h" #ifndef LPROCFS static struct lprocfs_vars lprocfs_obd_vars[] = { {0} }; static struct lprocfs_vars lprocfs_module_vars[] = { {0} }; #else static int lprocfs_filter_rd_groups(char *page, char **start, off_t off, int count, int *eof, void *data) { struct obd_device *obd = (struct obd_device *)data; *eof = 1; return snprintf(page, count, "%u\n", obd->u.filter.fo_group_count); } static int lprocfs_filter_rd_tot_dirty(char *page, char **start, off_t off, int count, int *eof, void *data) { struct obd_device *obd = (struct obd_device *)data; LASSERT(obd != NULL); *eof = 1; return snprintf(page, count, LPU64"\n", obd->u.filter.fo_tot_dirty); } static int lprocfs_filter_rd_tot_granted(char *page, char **start, off_t off, int count, int *eof, void *data) { struct obd_device *obd = (struct obd_device *)data; LASSERT(obd != NULL); *eof = 1; return snprintf(page, count, LPU64"\n", obd->u.filter.fo_tot_granted); } static int lprocfs_filter_rd_tot_pending(char *page, char **start, off_t off, int count, int *eof, void *data) { struct obd_device *obd = (struct obd_device *)data; LASSERT(obd != NULL); *eof = 1; return snprintf(page, count, LPU64"\n", obd->u.filter.fo_tot_pending); } static int lprocfs_filter_rd_mntdev(char *page, char **start, off_t off, int count, int *eof, void *data) { struct obd_device *obd = (struct obd_device *)data; LASSERT(obd != NULL); LASSERT(obd->u.filter.fo_vfsmnt->mnt_devname); *eof = 1; return snprintf(page, count, "%s\n", obd->u.filter.fo_vfsmnt->mnt_devname); } static int lprocfs_filter_rd_last_id(char *page, char **start, off_t off, int count, int *eof, void *data) { struct obd_device *obd = data; struct filter_obd *filter = &obd->u.filter; int retval = 0, rc, i; if (obd == NULL) return 0; for (i = 1; i < filter->fo_group_count; i++) { rc = snprintf(page, count, LPU64"\n",filter_last_id(filter, i)); if (rc < 0) { retval = rc; break; } page += rc; count -= rc; retval += rc; } return retval; } int lprocfs_filter_rd_readcache(char *page, char **start, off_t off, int count, int *eof, void *data) { struct obd_device *obd = data; int rc; rc = snprintf(page, count, LPU64"\n", obd->u.filter.fo_readcache_max_filesize); return rc; } int lprocfs_filter_wr_readcache(struct file *file, const char *buffer, unsigned long count, void *data) { struct obd_device *obd = data; __u64 val; int rc; rc = lprocfs_write_u64_helper(buffer, count, &val); if (rc) return rc; obd->u.filter.fo_readcache_max_filesize = val; return count; } static struct lprocfs_vars lprocfs_obd_vars[] = { { "uuid", lprocfs_rd_uuid, 0, 0 }, { "blocksize", lprocfs_rd_blksize, 0, 0 }, { "kbytestotal", lprocfs_rd_kbytestotal, 0, 0 }, { "kbytesfree", lprocfs_rd_kbytesfree, 0, 0 }, { "kbytesavail", lprocfs_rd_kbytesavail, 0, 0 }, { "filestotal", lprocfs_rd_filestotal, 0, 0 }, { "filesfree", lprocfs_rd_filesfree, 0, 0 }, { "filegroups", lprocfs_filter_rd_groups, 0, 0 }, { "fstype", lprocfs_rd_fstype, 0, 0 }, { "mntdev", lprocfs_filter_rd_mntdev, 0, 0 }, { "last_id", lprocfs_filter_rd_last_id,0, 0 }, { "tot_dirty", lprocfs_filter_rd_tot_dirty, 0, 0 }, { "tot_pending", lprocfs_filter_rd_tot_pending, 0, 0 }, { "tot_granted", lprocfs_filter_rd_tot_granted, 0, 0 }, { "num_exports", lprocfs_rd_num_exports, 0, 0 }, { "readcache_max_filesize", lprocfs_filter_rd_readcache, lprocfs_filter_wr_readcache, 0 }, { 0 } }; static struct lprocfs_vars lprocfs_module_vars[] = { { "num_refs", lprocfs_rd_numrefs, 0, 0 }, { 0 } }; void filter_tally_write(struct filter_obd *filter, struct page **pages, int nr_pages, unsigned long *blocks, int blocks_per_page) { struct page *last_page = NULL; unsigned long *last_block = NULL; unsigned long discont_pages = 0; unsigned long discont_blocks = 0; int i; if (nr_pages == 0) return; lprocfs_oh_tally_log2(&filter->fo_w_pages, nr_pages); while (nr_pages-- > 0) { if (last_page && (*pages)->index != (last_page->index + 1)) discont_pages++; last_page = *pages; pages++; for (i = 0; i < blocks_per_page; i++) { if (last_block && *blocks != (*last_block + 1)) discont_blocks++; last_block = blocks++; } } lprocfs_oh_tally(&filter->fo_w_discont_pages, discont_pages); lprocfs_oh_tally(&filter->fo_w_discont_blocks, discont_blocks); } void filter_tally_read(struct filter_obd *filter, struct niobuf_local *lnb, int niocount) { struct niobuf_local *end; struct page *last_page = NULL; unsigned long discont_pages = 0; unsigned long discont_blocks = 0; if (niocount == 0) return; for (end = lnb + niocount; lnb < end && lnb->page; lnb++) { struct page *page = lnb->page; if (last_page) { if (page->index != (last_page->index + 1)) discont_pages++; /* XXX not so smart for now */ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) if ((page->buffers && last_page->buffers) && (page->buffers->b_blocknr != (last_page->buffers->b_blocknr + 1))) discont_blocks++; #else #warning "port on 2.6 -bzzz" #endif } last_page = page; } lprocfs_oh_tally_log2(&filter->fo_r_pages, niocount); lprocfs_oh_tally(&filter->fo_r_discont_pages, discont_pages); lprocfs_oh_tally(&filter->fo_r_discont_blocks, discont_blocks); } #define pct(a,b) (b ? a * 100 / b : 0) static int filter_brw_stats_seq_show(struct seq_file *seq, void *v) { struct timeval now; struct obd_device *dev = seq->private; struct filter_obd *filter = &dev->u.filter; unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum; int i; do_gettimeofday(&now); /* this sampling races with updates */ seq_printf(seq, "snapshot_time: %lu:%lu (secs:usecs)\n", now.tv_sec, now.tv_usec); seq_printf(seq, "\n\t\t\tread\t\t\twrite\n"); seq_printf(seq, "pages per brw brws %% cum %% |"); seq_printf(seq, " rpcs %% cum %%\n"); read_tot = lprocfs_oh_sum(&filter->fo_r_pages); write_tot = lprocfs_oh_sum(&filter->fo_w_pages); read_cum = 0; write_cum = 0; for (i = 0; i < OBD_HIST_MAX; i++) { unsigned long r = filter->fo_r_pages.oh_buckets[i]; unsigned long w = filter->fo_w_pages.oh_buckets[i]; read_cum += r; write_cum += w; seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n", 1 << i, r, pct(r, read_tot), pct(read_cum, read_tot), w, pct(w, write_tot), pct(write_cum, write_tot)); if (read_cum == read_tot && write_cum == write_tot) break; } seq_printf(seq, "\n\t\t\tread\t\t\twrite\n"); seq_printf(seq, "discont pages rpcs %% cum %% |"); seq_printf(seq, " rpcs %% cum %%\n"); read_tot = lprocfs_oh_sum(&filter->fo_r_discont_pages); write_tot = lprocfs_oh_sum(&filter->fo_w_discont_pages); read_cum = 0; write_cum = 0; for (i = 0; i < OBD_HIST_MAX; i++) { unsigned long r = filter->fo_r_discont_pages.oh_buckets[i]; unsigned long w = filter->fo_w_discont_pages.oh_buckets[i]; read_cum += r; write_cum += w; seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n", i, r, pct(r, read_tot), pct(read_cum, read_tot), w, pct(w, write_tot), pct(write_cum, write_tot)); if (read_cum == read_tot && write_cum == write_tot) break; } seq_printf(seq, "\n\t\t\tread\t\t\twrite\n"); seq_printf(seq, "discont blocks rpcs %% cum %% |"); seq_printf(seq, " rpcs %% cum %%\n"); read_tot = lprocfs_oh_sum(&filter->fo_r_discont_blocks); write_tot = lprocfs_oh_sum(&filter->fo_w_discont_blocks); read_cum = 0; write_cum = 0; for (i = 0; i < OBD_HIST_MAX; i++) { unsigned long r = filter->fo_r_discont_blocks.oh_buckets[i]; unsigned long w = filter->fo_w_discont_blocks.oh_buckets[i]; read_cum += r; write_cum += w; seq_printf(seq, "%d:\t\t%10lu %3lu %3lu | %10lu %3lu %3lu\n", i, r, pct(r, read_tot), pct(read_cum, read_tot), w, pct(w, write_tot), pct(write_cum, write_tot)); if (read_cum == read_tot && write_cum == write_tot) break; } return 0; } #undef pct static void *filter_brw_stats_seq_start(struct seq_file *p, loff_t *pos) { if (*pos == 0) return (void *)1; return NULL; } static void *filter_brw_stats_seq_next(struct seq_file *p, void *v, loff_t *pos) { ++*pos; return NULL; } static void filter_brw_stats_seq_stop(struct seq_file *p, void *v) { } struct seq_operations filter_brw_stats_seq_sops = { .start = filter_brw_stats_seq_start, .stop = filter_brw_stats_seq_stop, .next = filter_brw_stats_seq_next, .show = filter_brw_stats_seq_show, }; static int filter_brw_stats_seq_open(struct inode *inode, struct file *file) { struct proc_dir_entry *dp = PDE(inode); struct seq_file *seq; int rc; rc = seq_open(file, &filter_brw_stats_seq_sops); if (rc) return rc; seq = file->private_data; seq->private = dp->data; return 0; } static ssize_t filter_brw_stats_seq_write(struct file *file, const char *buf, size_t len, loff_t *off) { struct seq_file *seq = file->private_data; struct obd_device *dev = seq->private; struct filter_obd *filter = &dev->u.filter; lprocfs_oh_clear(&filter->fo_r_pages); lprocfs_oh_clear(&filter->fo_w_pages); lprocfs_oh_clear(&filter->fo_r_discont_pages); lprocfs_oh_clear(&filter->fo_w_discont_pages); lprocfs_oh_clear(&filter->fo_r_discont_blocks); lprocfs_oh_clear(&filter->fo_w_discont_blocks); return len; } struct file_operations filter_brw_stats_fops = { .owner = THIS_MODULE, .open = filter_brw_stats_seq_open, .read = seq_read, .write = filter_brw_stats_seq_write, .llseek = seq_lseek, .release = seq_release, }; int lproc_filter_attach_seqstat(struct obd_device *dev) { return lprocfs_obd_seq_create(dev, "brw_stats", 0444, &filter_brw_stats_fops, dev); } #endif /* LPROCFS */ LPROCFS_INIT_VARS(filter, lprocfs_module_vars, lprocfs_obd_vars)