From 490d05b9daa0e60fbb3aac647c556408e88228bd Mon Sep 17 00:00:00 2001 From: Matthew Ahrens Date: Sun, 24 Mar 2013 13:24:51 -0800 Subject: [PATCH] 3641 want a histogram of compressed block sizes Reviewed by: George Wilson Reviewed by: Christopher Siden Approved by: Eric Schrock --- usr/src/cmd/zdb/zdb.c | 89 +++++++++++++++++++++++++++++++------------ 1 file changed, 65 insertions(+), 24 deletions(-) diff --git a/usr/src/cmd/zdb/zdb.c b/usr/src/cmd/zdb/zdb.c index b4b61503d9e4..d4d32b999608 100644 --- a/usr/src/cmd/zdb/zdb.c +++ b/usr/src/cmd/zdb/zdb.c @@ -21,10 +21,11 @@ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2012 by Delphix. All rights reserved. + * Copyright (c) 2013 by Delphix. All rights reserved. */ #include +#include #include #include #include @@ -241,18 +242,18 @@ zdb_nicenum(uint64_t num, char *buf) nicenum(num, buf); } -const char dump_zap_stars[] = "****************************************"; -const int dump_zap_width = sizeof (dump_zap_stars) - 1; +const char histo_stars[] = "****************************************"; +const int histo_width = sizeof (histo_stars) - 1; static void -dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE]) +dump_histogram(const uint64_t *histo, int size) { int i; - int minidx = ZAP_HISTOGRAM_SIZE - 1; + int minidx = size - 1; int maxidx = 0; uint64_t max = 0; - for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) { + for (i = 0; i < size; i++) { if (histo[i] > max) max = histo[i]; if (histo[i] > 0 && i > maxidx) @@ -261,12 +262,14 @@ dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE]) minidx = i; } - if (max < dump_zap_width) - max = dump_zap_width; + if (max < histo_width) + max = histo_width; - for (i = minidx; i <= maxidx; i++) - (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i], - &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]); + for (i = minidx; i <= maxidx; i++) { + (void) printf("\t\t\t%3u: %6llu %s\n", + i, (u_longlong_t)histo[i], + &histo_stars[(max - histo[i]) * histo_width / max]); + } } static void @@ -317,19 +320,19 @@ dump_zap_stats(objset_t *os, uint64_t object) (u_longlong_t)zs.zs_salt); (void) printf("\t\tLeafs with 2^n pointers:\n"); - dump_zap_histogram(zs.zs_leafs_with_2n_pointers); + dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE); (void) printf("\t\tBlocks with n*5 entries:\n"); - dump_zap_histogram(zs.zs_blocks_with_n5_entries); + dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE); (void) printf("\t\tBlocks n/10 full:\n"); - dump_zap_histogram(zs.zs_blocks_n_tenths_full); + dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE); (void) printf("\t\tEntries with n chunks:\n"); - dump_zap_histogram(zs.zs_entries_using_n_chunks); + dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE); (void) printf("\t\tBuckets with n entries:\n"); - dump_zap_histogram(zs.zs_buckets_with_n_entries); + dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE); } /*ARGSUSED*/ @@ -949,7 +952,7 @@ sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp) const dva_t *dva = bp->blk_dva; int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1; - if (dump_opt['b'] >= 5) { + if (dump_opt['b'] >= 6) { sprintf_blkptr(blkbuf, bp); return; } @@ -1988,11 +1991,13 @@ dump_one_dir(const char *dsname, void *arg) /* * Block statistics. */ +#define PSIZE_HISTO_SIZE (SPA_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1) typedef struct zdb_blkstats { - uint64_t zb_asize; - uint64_t zb_lsize; - uint64_t zb_psize; - uint64_t zb_count; + uint64_t zb_asize; + uint64_t zb_lsize; + uint64_t zb_psize; + uint64_t zb_count; + uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE]; } zdb_blkstats_t; /* @@ -2016,6 +2021,9 @@ typedef struct zdb_cb { zdb_blkstats_t zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1]; uint64_t zcb_dedup_asize; uint64_t zcb_dedup_blocks; + uint64_t zcb_start; + uint64_t zcb_lastprint; + uint64_t zcb_totalasize; uint64_t zcb_errors[256]; int zcb_readfails; int zcb_haderrors; @@ -2042,6 +2050,7 @@ zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp, zb->zb_lsize += BP_GET_LSIZE(bp); zb->zb_psize += BP_GET_PSIZE(bp); zb->zb_count++; + zb->zb_psize_histogram[BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT]++; } if (dump_opt['L']) @@ -2151,7 +2160,7 @@ zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, zcb->zcb_readfails = 0; - if (dump_opt['b'] >= 4) { + if (dump_opt['b'] >= 5) { sprintf_blkptr(blkbuf, bp); (void) printf("objset %llu object %llu " "level %lld offset 0x%llx %s\n", @@ -2162,6 +2171,28 @@ zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp, blkbuf); } + if (dump_opt['b'] < 5 && isatty(STDERR_FILENO) && + gethrtime() > zcb->zcb_lastprint + NANOSEC) { + uint64_t now = gethrtime(); + char buf[10]; + uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize; + int kb_per_sec = + 1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000)); + int sec_remaining = + (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec; + + zfs_nicenum(bytes, buf, sizeof (buf)); + (void) fprintf(stderr, + "\r%5s completed (%4dMB/s) " + "estimated time remaining: %uhr %02umin %02usec ", + buf, kb_per_sec / 1024, + sec_remaining / 60 / 60, + sec_remaining / 60 % 60, + sec_remaining % 60); + + zcb->zcb_lastprint = now; + } + return (0); } @@ -2293,7 +2324,7 @@ count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) { zdb_cb_t *zcb = arg; - if (dump_opt['b'] >= 4) { + if (dump_opt['b'] >= 5) { char blkbuf[BP_SPRINTF_LEN]; sprintf_blkptr(blkbuf, bp); (void) printf("[%s] %s\n", @@ -2312,7 +2343,7 @@ dump_block_stats(spa_t *spa) int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD; int leaks = 0; - (void) printf("\nTraversing all blocks %s%s%s%s%s...\n", + (void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n", (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "", (dump_opt['c'] == 1) ? "metadata " : "", dump_opt['c'] ? "checksums " : "", @@ -2348,6 +2379,8 @@ dump_block_stats(spa_t *spa) if (dump_opt['c'] > 1) flags |= TRAVERSE_PREFETCH_DATA; + zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa)); + zcb.zcb_start = zcb.zcb_lastprint = gethrtime(); zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb); /* @@ -2487,6 +2520,14 @@ dump_block_stats(spa_t *spa) else (void) printf(" L%d %s\n", level, typename); + + if (dump_opt['b'] >= 4) { + (void) printf("psize " + "(in 512-byte sectors): " + "number of blocks\n"); + dump_histogram(zb->zb_psize_histogram, + PSIZE_HISTO_SIZE); + } } } }