With the ATI bug I was hitting earlier fixed, only my btrfs partition continues to show high cpu usage for some operations. Rsync, git pull, git checkout and svn up are typicall operations which trigger the high cpu usage. As an example, this perf report is from using git checkout to change to a new branch; the change needed to checkout 208 files out of about 1600 total files. du(1) reports that the checkout is about 14 megs; the alternates for that tree have about 60 megs of git packs. As you can see btrfs_find_space_cluster(), find_next_bit() and find_next_zero_bit() use most of the sys cpu. That patterns seems to hold whenever I run perf top during such operations. Box is x86_32, pentium3m. -JimC -- James Cloos <cloos@jhcloos.com> OpenPGP: 1024D/ED7DAEA6
On Tue, Mar 02, 2010 at 01:35:21PM -0500, James Cloos wrote:> With the ATI bug I was hitting earlier fixed, only my btrfs partition > continues to show high cpu usage for some operations. > > Rsync, git pull, git checkout and svn up are typicall operations which > trigger the high cpu usage. > > As an example, this perf report is from using git checkout to change to > a new branch; the change needed to checkout 208 files out of about 1600 > total files. du(1) reports that the checkout is about 14 megs; the > alternates for that tree have about 60 megs of git packs. > > As you can see btrfs_find_space_cluster(), find_next_bit() and > find_next_zero_bit() use most of the sys cpu. That patterns seems to > hold whenever I run perf top during such operations. > > Box is x86_32, pentium3m. >Ok well thats a bummer. Would you mind trying this completely untested and uncompiled patch :)? I think we should probably not be trying to use a bitmap unless theres quite a bit more free space in it than what we need, since they can span 128mb, and instead of cycling through the extent entries we should probably just search for the next bitmap to make it simpler. Let me know if this helps or not. Like I said I''ve not tested it or anything, so it could make things blow up, but I don''t think it will. Thanks, Josef diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index cb2849f..9032f74 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -1227,8 +1227,8 @@ again: while (entry->bitmap || found_bitmap || (!entry->bitmap && entry->bytes < min_bytes)) { struct rb_node *node = rb_next(&entry->offset_index); - - if (entry->bitmap && entry->bytes > bytes + empty_size) { + u64 old_offset = entry->offset; + if (entry->bitmap && entry->bytes > (bytes + empty_size) * 4) { ret = btrfs_bitmap_cluster(block_group, entry, cluster, offset, bytes + empty_size, min_bytes); @@ -1240,7 +1240,16 @@ again: ret = -ENOSPC; goto out; } + entry = rb_entry(node, struct btrfs_free_space, offset_index); + if (found_bitmap && !entry->bitmap) { + old_offset += BITS_PER_BITMAP * block_group->sectorsize; + entry = tree_search_offset(block_group, old_offset, 1, 1); + if (!entry) { + ret = -ENOSPC; + goto out; + } + } } /* -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>>> "Josef" == Josef Bacik <josef@redhat.com> writes:>> As you can see btrfs_find_space_cluster(), find_next_bit() and >> find_next_zero_bit() use most of the sys cpu. That patterns seems to >> hold whenever I run perf top during such operations.Josef> Ok well thats a bummer. Would you mind trying this completely untested Josef> and uncompiled patch :)? It is compiling now. I might not be able to reboot until tonight. And I''ll want to do another incremental backup of the fs. (I''m using it in production in part because it only has mirrors, checkouts and the like and because I have that backup.) I''ll reply again once I have results. -JimC -- James Cloos <cloos@jhcloos.com> OpenPGP: 1024D/ED7DAEA6 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>>> "J" == Josef Bacik <josef@redhat.com> writes:>> As you can see btrfs_find_space_cluster(), find_next_bit() and >> find_next_zero_bit() use most of the sys cpu. That patterns seems >> to hold whenever I run perf top during such operations.J> Ok well thats a bummer. Would you mind trying this completely J> untested and uncompiled patch :)? I think we should probably not be J> trying to use a bitmap unless theres quite a bit more free space in J> it than what we need, since they can span 128mb, and instead of J> cycling through the extent entries we should probably just search for J> the next bitmap to make it simpler. The patch did improve the CPU usage, at the expense of IO latency and block/cache usage. Just after booting, and with crond down so that nothing competed, I tried a git pull in a not-too-stale clone of cairo; it took about 6½ minutes of disk i/o before git-fetch actually grabbed anything across the net; that filled the fs cache (ie, about ⅓Gig usage). Once that initial pain was over, everything I tried was much faster than w/o the patch, until I restarted crond and let mail flow in. With the added paging pressure from uucico, uux, and all of postfix’s and pgsql’s processes the delays when operating on the btrfs fs were significant. I do think, however, that they were still faster than w/o the patch. But that is subjective. The only dmesg differences were a single btrfs-transaction blocked for more than 120s notice: [ 360.583097] INFO: task btrfs-transacti:2419 blocked for more than 120 seconds. [ 360.583107] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 360.583117] btrfs-transac D d852d2e0 0 2419 2 0x00000000 [ 360.583131] d8510ee0 00000046 00000001 d852d2e0 c1022506 d8510ef8 d852d584 d852d2e0 [ 360.583149] da252000 dc7587a4 7fffffff d8510f3c c152761d d847265c dc7587a4 00000000 [ 360.583166] d8510f28 d8510f3c c11a66e8 00000000 d8510f3c c11d3d5f dc758800 dc7587a4 [ 360.583184] Call Trace: [ 360.583209] [<c1022506>] ? __dequeue_entity+0x26/0x50 [ 360.583227] [<c152761d>] schedule_timeout+0x14d/0x250 [ 360.583244] [<c11a66e8>] ? btrfs_run_delayed_refs+0xa8/0x220 [ 360.583260] [<c11d3d5f>] ? btrfs_run_ordered_operations+0x1bf/0x1f0 [ 360.583275] [<c11b76f0>] btrfs_commit_transaction+0x120/0x740 [ 360.583290] [<c104c950>] ? autoremove_wake_function+0x0/0x50 [ 360.583305] [<c11b21b3>] transaction_kthread+0x1b3/0x1e0 [ 360.583317] [<c1527133>] ? preempt_schedule+0x33/0x50 [ 360.583328] [<c11b2000>] ? transaction_kthread+0x0/0x1e0 [ 360.583339] [<c104c594>] kthread+0x74/0x80 [ 360.583349] [<c104c520>] ? kthread+0x0/0x80 [ 360.583361] [<c10032d6>] kernel_thread_helper+0x6/0x10 And this one line notice: [ 115.801909] device label bay0 devid 1 transid 5397 /dev/sdb2 which may have been at the point where I mounted /dev/sdb2 or may have been during that first git-pull I mentioned above. The 360s mark was certainly during that git-pull. There are also these notices in dmesg, but I see one of them in /var/log from an earlier boot, w/o the patch, so they are only more frequent on this boot, and therefore unlikely to be related. [88411.762735] NOHZ: local_softirq_pending 100 [88981.762734] NOHZ: local_softirq_pending 100 [89046.762728] NOHZ: local_softirq_pending 100 [90970.827857] NOHZ: local_softirq_pending 100 [91012.053557] NOHZ: local_softirq_pending 100 [91615.113704] NOHZ: local_softirq_pending 100 [91673.078683] NOHZ: local_softirq_pending 100 [92107.399189] NOHZ: local_softirq_pending 100 [92440.915490] NOHZ: local_softirq_pending 100 [92447.485834] NOHZ: local_softirq_pending 100 All in all, the patch seems to be a progression. The perf report of that first pull is below; top(1) showed i/o wait rather than user or sys time during most of it: # Samples: 11476 # # Overhead Command Shared Object Symbol # ........ ......... ............................... ...... # 28.08% git-merge [kernel] [k] btrfs_find_space_cluster 22.39% git-merge [kernel] [k] find_next_bit 10.49% git [kernel] [k] btrfs_find_space_cluster 8.86% git [kernel] [k] find_next_bit 8.58% git-merge [kernel] [k] find_next_zero_bit 3.57% git [kernel] [k] find_next_zero_bit 1.34% git libz.so.1.2.3 [.] inflate_table 1.25% git git [.] 0x000000000c01cf 1.22% git libz.so.1.2.3 [.] .L213 0.76% git libz.so.1.2.3 [.] inflate_fast 0.66% git libz.so.1.2.3 [.] longest_match 0.64% git-merge libz.so.1.2.3 [.] inflate_fast 0.55% git libz.so.1.2.3 [.] adler32 0.47% git libz.so.1.2.3 [.] deflate_fast 0.45% git libz.so.1.2.3 [.] compress_block 0.40% git libz.so.1.2.3 [.] .L207 0.30% git libz.so.1.2.3 [.] .L208 0.25% git [kernel] [k] get_page_from_freelist 0.24% git-merge [kernel] [k] block_group_cache_tree_search 0.20% git-merge libz.so.1.2.3 [.] adler32 0.20% git [kernel] [k] scsi_dispatch_cmd 0.18% git libz.so.1.2.3 [.] fill_window 0.17% git-merge git-merge [.] xdl_hash_record 0.16% git-merge [kernel] [k] find_free_extent 0.16% git libz.so.1.2.3 [.] inflate 0.14% git-merge [kernel] [k] test_range_bit 0.14% git-merge [kernel] [k] find_extent_buffer 0.14% git libc-2.11.so [.] _int_malloc 0.13% git-merge [kernel] [k] generic_bin_search 0.12% git-merge [kernel] [k] tree_search_offset 0.12% git-merge [kernel] [k] scsi_dispatch_cmd 0.12% git libz.so.1.2.3 [.] .L198 0.11% git-merge [kernel] [k] read_extent_buffer 0.10% git-merge git-merge [.] xdl_recmatch 0.10% git-merge [ehci_hcd] [k] 0x00000000003c25 0.10% git-merge git-merge [.] xdl_prepare_ctx 0.10% git-merge [kernel] [k] div64_u64 0.09% git-merge [kernel] [k] btrfs_clear_path_blocking 0.09% git-merge [kernel] [k] btrfs_search_slot 0.09% git-merge [kernel] [k] btrfs_find_block_group 0.08% git-merge git-merge [.] blk_SHA1_Block 0.08% git-merge [kernel] [k] get_page_from_freelist 0.08% git-merge [kernel] [k] map_private_extent_buffer 0.08% git libz.so.1.2.3 [.] .L211 0.08% git [kernel] [k] __do_softirq 0.07% git-merge git-merge [.] xdl_prepare_env 0.07% git-merge [kernel] [k] __do_softirq 0.07% git-merge [kernel] [k] kmem_cache_alloc 0.07% git-merge [kernel] [k] memmove 0.07% git libz.so.1.2.3 [.] pqdownheap 0.07% git libz.so.1.2.3 [.] .L212 0.07% git [kernel] [k] generic_bin_search 0.06% git-merge libc-2.11.so [.] __gconv_transform_utf8_internal 0.06% git-merge [kernel] [k] rb_next 0.06% git libz.so.1.2.3 [.] build_tree 0.06% git libc-2.11.so [.] ____strtoul_l_internal 0.06% git [kernel] [k] find_extent_buffer 0.06% git [kernel] [k] div64_u64 0.06% git [kernel] [k] do_page_fault 0.05% git-merge [kernel] [k] alloc_extent_buffer 0.05% git-merge [kernel] [k] __lookup 0.05% git [kernel] [k] kmem_cache_alloc 0.05% git [kernel] [k] find_free_extent 0.05% git [kernel] [k] test_range_bit 0.05% git [kernel] [k] scsi_request_fn 0.05% git [ehci_hcd] [k] 0x00000000003c25 0.04% git-merge git-merge [.] index_name_pos 0.04% git-merge [kernel] [k] set_extent_bit 0.04% git-merge [kernel] [k] btrfs_alloc_from_cluster 0.04% git-merge [kernel] [k] __make_request 0.04% git-merge [kernel] [k] __copy_from_user_ll 0.04% git libz.so.1.2.3 [.] .L210 0.04% git libc-2.11.so [.] _IO_vfprintf_internal 0.04% git libc-2.11.so [.] memcpy 0.04% git [kernel] [k] set_extent_bit 0.04% git [kernel] [k] read_extent_buffer 0.04% git [kernel] [k] map_private_extent_buffer 0.04% git [kernel] [k] ata_sff_interrupt 0.03% git-merge [kernel] [k] inode_init_once 0.03% git-merge [kernel] [k] verify_parent_transid 0.03% git-merge [kernel] [k] map_extent_buffer 0.03% git-merge [kernel] [k] rb_prev 0.03% git libz.so.1.2.3 [.] .L206 0.03% git libc-2.11.so [.] __GI___libc_malloc 0.03% git [kernel] [k] unmap_vmas 0.03% git [kernel] [k] unlock_up 0.03% git [kernel] [k] btrfs_search_slot 0.03% git [kernel] [k] set_state_private 0.03% git [kernel] [k] btrfs_return_cluster_to_free_space 0.03% git-merge libc-2.11.so [.] _int_malloc 0.03% git-merge libc-2.11.so [.] __ubp_memchr 0.03% git-merge git-merge [.] cache_name_compare 0.03% git-merge [kernel] [k] __dentry_open 0.03% git-merge [kernel] [k] link_path_walk 0.03% git-merge [kernel] [k] find_inode 0.03% git-merge [kernel] [k] __mark_inode_dirty 0.03% git-merge [kernel] [k] read_block_for_search 0.03% git-merge [kernel] [k] btrfs_put_block_group 0.03% git-merge [kernel] [k] btrfs_alloc_inode 0.03% git-merge [kernel] [k] btrfs_iget 0.03% git-merge [kernel] [k] btrfs_try_spin_lock 0.03% git-merge [kernel] [k] btrfs_return_cluster_to_free_space 0.03% git libc-2.11.so [.] __GI_memset 0.03% git ld-2.11.so [.] do_lookup_x 0.03% git [kernel] [k] __set_page_dirty_nobuffers 0.03% git [kernel] [k] map_extent_buffer 0.03% git [kernel] [k] btrfs_try_spin_lock 0.03% git [kernel] [k] tree_search_offset 0.03% git [kernel] [k] rb_next 0.03% git [kernel] [k] sha_transform 0.03% git [kernel] [k] __atomic_notifier_call_chain 0.03% git 8109368 [.] 0x00000008109368 0.02% git-pull [kernel] [k] do_wp_page 0.02% git-merge libz.so.1.2.3 [.] inflate_table 0.02% git-merge libc-2.11.so [.] __calloc 0.02% git-merge libc-2.11.so [.] _int_realloc 0.02% git-merge libc-2.11.so [.] __GI_strlen 0.02% git-merge libc-2.11.so [.] _dl_mcount_wrapper_check 0.02% git-merge git-merge [.] ie_match_stat 0.02% git-merge git-merge [.] nth_packed_object_offset 0.02% git-merge git-merge [.] xdl_recs_cmp 0.02% git-merge bash [.] set_line_mbstate 0.02% git-merge bash [.] T.696 0.02% git-merge [kernel] [k] __wake_up_bit 0.02% git-merge [kernel] [k] add_to_page_cache_lru 0.02% git-merge [kernel] [k] __kmalloc 0.02% git-merge [kernel] [k] d_alloc 0.02% git-merge [kernel] [k] btrfs_release_path 0.02% git-merge [kernel] [k] bin_search 0.02% git-merge [kernel] [k] unlock_up 0.02% git-merge [kernel] [k] block_group_cache_done 0.02% git-merge [kernel] [k] run_one_delayed_ref 0.02% git-merge [kernel] [k] acls_after_inode_item 0.02% git-merge [kernel] [k] btrfs_dir_data_len 0.02% git-merge [kernel] [k] btrfs_item_offset 0.02% git-merge [kernel] [k] insert_state 0.02% git-merge [kernel] [k] unmap_extent_buffer 0.02% git-merge [kernel] [k] clear_extent_bit 0.02% git-merge [kernel] [k] memcmp_extent_buffer 0.02% git-merge [kernel] [k] set_extent_buffer_dirty 0.02% git-merge [kernel] [k] btrfs_clear_lock_blocking 0.02% git-merge [kernel] [k] spin_unlock 0.02% git-merge [kernel] [k] tree_insert 0.02% git-merge [kernel] [k] scsi_request_fn 0.02% git libz.so.1.2.3 [.] send_tree 0.02% git libz.so.1.2.3 [.] inflateEnd 0.02% git libz.so.1.2.3 [.] .L201 0.02% git libz.so.1.2.3 [.] .L203 0.02% git libz.so.1.2.3 [.] .L190 0.02% git libc-2.11.so [.] __i686.get_pc_thunk.bx 0.02% git libc-2.11.so [.] _IO_getline_info 0.02% git libc-2.11.so [.] _IO_getc 0.02% git libc-2.11.so [.] _IO_default_xsputn_internal 0.02% git libc-2.11.so [.] execvpe 0.02% git libc-2.11.so [.] _dl_addr 0.02% git [kernel] [k] T.1336 0.02% git [kernel] [k] __rcu_read_unlock 0.02% git [kernel] [k] release_pages 0.02% git [kernel] [k] do_wp_page 0.02% git [kernel] [k] handle_mm_fault 0.02% git [kernel] [k] find_vma 0.02% git [kernel] [k] inode_init_always 0.02% git [kernel] [k] btrfs_clear_path_blocking 0.02% git [kernel] [k] read_block_for_search 0.02% git [kernel] [k] bin_search 0.02% git [kernel] [k] __btrfs_cow_block 0.02% git [kernel] [k] btrfs_alloc_free_block 0.02% git [kernel] [k] __btrfs_end_transaction 0.02% git [kernel] [k] __tree_search 0.02% git [kernel] [k] btrfs_set_dir_data_len 0.02% git [kernel] [k] radix_tree_lookup_slot 0.02% git [kernel] [k] __lookup 0.02% git [kernel] [k] rb_erase 0.02% git [kernel] [k] rb_prev 0.02% git [kernel] [k] memmove 0.02% git [kernel] [k] copy_to_user 0.02% git [kernel] [k] conv_uni_to_pc 0.01% uname libc-2.11.so [.] ptmalloc_init 0.01% uname [kernel] [k] sched_move_task 0.01% tr libc-2.11.so [.] .L31 0.01% tr [kernel] [k] __do_fault 0.01% tr [kernel] [k] do_wp_page 0.01% sed libc-2.11.so [.] __GI___libc_free 0.01% sed libc-2.11.so [.] _getopt_internal_r 0.01% sed ld-2.11.so [.] _dl_lookup_symbol_x 0.01% sed ld-2.11.so [.] _dl_relocate_object 0.01% sed ld-2.11.so [.] _dl_check_map_versions 0.01% sed ld-2.11.so [.] __i686.get_pc_thunk.bx 0.01% sed [kernel] [k] handle_mm_fault 0.01% sed [kernel] [k] flush_old_exec 0.01% sed [kernel] [k] do_page_fault 0.01% git-pull [kernel] [k] T.1336 0.01% git-pull [kernel] [k] get_page_from_freelist 0.01% git-pull [kernel] [k] generic_fillattr 0.01% git-pull [kernel] [k] acpi_pm_read 0.01% git-merge libz.so.1.2.3 [.] zcalloc 0.01% git-merge libc-2.11.so [.] __i686.get_pc_thunk.bx 0.01% git-merge libc-2.11.so [.] __gconv_find_transform 0.01% git-merge libc-2.11.so [.] _IO_doallocbuf_internal 0.01% git-merge libc-2.11.so [.] __GI___libc_free 0.01% git-merge libc-2.11.so [.] __GI___libc_malloc 0.01% git-merge libc-2.11.so [.] __GI_mbrtowc 0.01% git-merge libc-2.11.so [.] __GI___lxstat64 0.01% git-merge ld-2.11.so [.] do_lookup_x 0.01% git-merge ld-2.11.so [.] strcmp 0.01% git-merge git-merge [.] git_merge_config 0.01% git-merge git-merge [.] git_checkattr 0.01% git-merge git-merge [.] write_entry 0.01% git-merge git-merge [.] is_bare_repository 0.01% git-merge git-merge [.] patch_delta 0.01% git-merge git-merge [.] df_name_compare 0.01% git-merge git-merge [.] write_index 0.01% git-merge git-merge [.] add_index_entry 0.01% git-merge git-merge [.] prepare_packed_git 0.01% git-merge git-merge [.] cache_or_unpack_entry 0.01% git-merge git-merge [.] traverse_trees 0.01% git-merge git-merge [.] twoway_merge 0.01% git-merge git-merge [.] xmmap 0.01% git-merge git-merge [.] xmalloc 0.01% git-merge git-merge [.] xdi_diff 0.01% git-merge git-merge [.] xdl_change_compact 0.01% git-merge git-merge [.] xdl_guess_lines 0.01% git-merge bash [.] T.558 0.01% git-merge bash [.] make_env_array_from_var_list 0.01% git-merge bash [.] buffered_getchar 0.01% git-merge bash [.] parse_and_execute 0.01% git-merge [kernel] [k] sysenter_past_esp 0.01% git-merge [kernel] [k] acquire_console_sem 0.01% git-merge [kernel] [k] sys_wait4 0.01% git-merge [kernel] [k] finish_wait 0.01% git-merge [kernel] [k] add_wait_queue 0.01% git-merge [kernel] [k] down_read_trylock 0.01% git-merge [kernel] [k] up_read 0.01% git-merge [kernel] [k] __call_rcu 0.01% git-merge [kernel] [k] __rcu_read_unlock 0.01% git-merge [kernel] [k] find_get_page 0.01% git-merge [kernel] [k] unlock_page 0.01% git-merge [kernel] [k] __alloc_pages_nodemask 0.01% git-merge [kernel] [k] free_hot_cold_page 0.01% git-merge [kernel] [k] __pagevec_free 0.01% git-merge [kernel] [k] __set_page_dirty_nobuffers 0.01% git-merge [kernel] [k] ____pagevec_lru_add 0.01% git-merge [kernel] [k] lru_add_drain 0.01% git-merge [kernel] [k] next_zones_zonelist 0.01% git-merge [kernel] [k] unmap_vmas 0.01% git-merge [kernel] [k] do_wp_page 0.01% git-merge [kernel] [k] find_vma 0.01% git-merge [kernel] [k] unmap_region 0.01% git-merge [kernel] [k] blk_queue_bounce 0.01% git-merge [kernel] [k] slab_buffer_size 0.01% git-merge [kernel] [k] kfree 0.01% git-merge [kernel] [k] get_empty_filp 0.01% git-merge [kernel] [k] create_write_pipe 0.01% git-merge [kernel] [k] path_init 0.01% git-merge [kernel] [k] getname 0.01% git-merge [kernel] [k] _d_rehash 0.01% git-merge [kernel] [k] d_instantiate 0.01% git-merge [kernel] [k] __d_lookup 0.01% git-merge [kernel] [k] dput 0.01% git-merge [kernel] [k] inode_init_always 0.01% git-merge [kernel] [k] mntput_no_expire 0.01% git-merge [kernel] [k] locks_remove_flock 0.01% git-merge [kernel] [k] check_block 0.01% git-merge [kernel] [k] btrfs_unlock_up_safe 0.01% git-merge [kernel] [k] btrfs_alloc_path 0.01% git-merge [kernel] [k] btrfs_root_node 0.01% git-merge [kernel] [k] btrfs_lock_root_node 0.01% git-merge [kernel] [k] btrfs_header_nritems 0.01% git-merge [kernel] [k] __btrfs_cow_block 0.01% git-merge [kernel] [k] btrfs_del_items 0.01% git-merge [kernel] [k] select_delayed_ref 0.01% git-merge [kernel] [k] pin_down_bytes 0.01% git-merge [kernel] [k] __btrfs_free_extent 0.01% git-merge [kernel] [k] run_clustered_refs 0.01% git-merge [kernel] [k] check_ref_cleanup 0.01% git-merge [kernel] [k] btrfs_reserve_metadata_for_delalloc 0.01% git-merge [kernel] [k] btrfs_lookup_dir_item 0.01% git-merge [kernel] [k] btrfs_del_csums 0.01% git-merge [kernel] [k] btrfs_lookup_inode 0.01% git-merge [kernel] [k] find_name_in_backref 0.01% git-merge [kernel] [k] btrfs_mark_buffer_dirty 0.01% git-merge [kernel] [k] btrfs_truncate_inode_items 0.01% git-merge [kernel] [k] inode_tree_add 0.01% git-merge [kernel] [k] __tree_search 0.01% git-merge [kernel] [k] btrfs_item_size 0.01% git-merge [kernel] [k] btrfs_timespec_sec 0.01% git-merge [kernel] [k] btrfs_inode_gid 0.01% git-merge [kernel] [k] btrfs_inode_uid 0.01% git-merge [kernel] [k] btrfs_inode_generation 0.01% git-merge [kernel] [k] btrfs_set_dir_type 0.01% git-merge [kernel] [k] btrfs_set_item_offset 0.01% git-merge [kernel] [k] btrfs_set_inode_transid 0.01% git-merge [kernel] [k] lock_extent 0.01% git-merge [kernel] [k] memmove_extent_buffer 0.01% git-merge [kernel] [k] write_extent_buffer 0.01% git-merge [kernel] [k] read_extent_buffer_pages 0.01% git-merge [kernel] [k] __btrfs_map_block 0.01% git-merge [kernel] [k] btrfs_map_bio 0.01% git-merge [kernel] [k] btrfs_tree_lock 0.01% git-merge [kernel] [k] btrfs_find_ref_cluster 0.01% git-merge [kernel] [k] security_inode_alloc 0.01% git-merge [kernel] [k] security_inode_permission 0.01% git-merge [kernel] [k] blk_recount_segments 0.01% git-merge [kernel] [k] _atomic_dec_and_lock 0.01% git-merge [kernel] [k] prio_tree_remove 0.01% git-merge [kernel] [k] radix_tree_lookup_slot 0.01% git-merge [kernel] [k] __rb_rotate_left 0.01% git-merge [kernel] [k] __rb_rotate_right 0.01% git-merge [kernel] [k] rb_insert_color 0.01% git-merge [kernel] [k] rb_erase 0.01% git-merge [kernel] [k] __copy_to_user_ll 0.01% git-merge [kernel] [k] copy_to_user 0.01% git-merge [kernel] [k] get_random_int 0.01% git-merge [kernel] [k] do_con_write 0.01% git-merge [kernel] [k] ata_sff_interrupt 0.01% git-merge [kernel] [k] mdio_ctrl_hw 0.01% git-merge [kernel] [k] acpi_pm_read 0.01% git-merge [kernel] [k] _cond_resched 0.01% git-merge [kernel] [k] do_page_fault 0.01% git libz.so.1.2.3 [.] deflateReset 0.01% git libz.so.1.2.3 [.] init_block 0.01% git libz.so.1.2.3 [.] inflateInit2_ 0.01% git libz.so.1.2.3 [.] .L560 0.01% git libz.so.1.2.3 [.] .L202 0.01% git libz.so.1.2.3 [.] .L209 0.01% git libz.so.1.2.3 [.] .L204 0.01% git libpthread-2.11.so [.] __write_nocancel 0.01% git libpthread-2.11.so [.] __recvfrom 0.01% git libc-2.11.so [.] __gconv_transform_utf8_internal 0.01% git libc-2.11.so [.] _IO_no_init 0.01% git libc-2.11.so [.] __GI___libc_free 0.01% git libc-2.11.so [.] __GI_strcmp 0.01% git libc-2.11.so [.] __GI_strrchr 0.01% git libc-2.11.so [.] __strchrnul 0.01% git libc-2.11.so [.] inet_pton4 0.01% git ld-2.11.so [.] _dl_map_object_from_fd 0.01% git ld-2.11.so [.] _dl_cache_libcmp 0.01% git ld-2.11.so [.] check_match.8476 0.01% git ld-2.11.so [.] _dl_lookup_symbol_x 0.01% git [kernel] [k] do_signal 0.01% git [kernel] [k] mcount 0.01% git [kernel] [k] do_set_thread_area 0.01% git [kernel] [k] sched_move_task 0.01% git [kernel] [k] copy_process 0.01% git [kernel] [k] __wake_up_bit 0.01% git [kernel] [k] prepare_creds 0.01% git [kernel] [k] futex_wait 0.01% git [kernel] [k] handle_IRQ_event 0.01% git [kernel] [k] __rcu_read_lock 0.01% git [kernel] [k] unlock_page 0.01% git [kernel] [k] find_get_pages_tag 0.01% git [kernel] [k] filemap_fault 0.01% git [kernel] [k] zone_watermark_ok 0.01% git [kernel] [k] __alloc_pages_nodemask 0.01% git [kernel] [k] free_hot_cold_page 0.01% git [kernel] [k] ____pagevec_lru_add 0.01% git [kernel] [k] __lru_cache_add 0.01% git [kernel] [k] put_page 0.01% git [kernel] [k] invalidate_inode_page 0.01% git [kernel] [k] __do_fault 0.01% git [kernel] [k] vma_wants_writenotify 0.01% git [kernel] [k] __vm_enough_memory 0.01% git [kernel] [k] vma_adjust 0.01% git [kernel] [k] do_brk 0.01% git [kernel] [k] sys_brk 0.01% git [kernel] [k] do_mmap_pgoff 0.01% git [kernel] [k] cache_alloc_refill 0.01% git [kernel] [k] kmem_cache_alloc_notrace 0.01% git [kernel] [k] vfs_read 0.01% git [kernel] [k] drop_file_write_access 0.01% git [kernel] [k] open_exec 0.01% git [kernel] [k] vfs_mkdir 0.01% git [kernel] [k] path_walk 0.01% git [kernel] [k] do_filp_open 0.01% git [kernel] [k] dput 0.01% git [kernel] [k] wake_up_inode 0.01% git [kernel] [k] inode_init_once 0.01% git [kernel] [k] __bio_add_page 0.01% git [kernel] [k] do_mpage_readpage 0.01% git [kernel] [k] __fsnotify_parent 0.01% git [kernel] [k] elf_map 0.01% git [kernel] [k] load_elf_binary 0.01% git [kernel] [k] dtSearch 0.01% git [kernel] [k] btrfs_unlock_up_safe 0.01% git [kernel] [k] btrfs_header_nritems 0.01% git [kernel] [k] btrfs_del_items 0.01% git [kernel] [k] block_group_cache_done 0.01% git [kernel] [k] check_force_delalloc 0.01% git [kernel] [k] select_delayed_ref 0.01% git [kernel] [k] btrfs_init_new_buffer 0.01% git [kernel] [k] lookup_inline_extent_backref 0.01% git [kernel] [k] pin_down_bytes 0.01% git [kernel] [k] update_block_group 0.01% git [kernel] [k] btrfs_set_buffer_uptodate 0.01% git [kernel] [k] verify_parent_transid 0.01% git [kernel] [k] btrfs_buffer_uptodate 0.01% git [kernel] [k] btrfs_set_extent_delalloc 0.01% git [kernel] [k] btrfs_merge_bio_hook 0.01% git [kernel] [k] btrfs_add_link 0.01% git [kernel] [k] btrfs_set_bit_hook 0.01% git [kernel] [k] btrfs_unlink 0.01% git [kernel] [k] dirty_and_release_pages 0.01% git [kernel] [k] btrfs_file_write 0.01% git [kernel] [k] lookup_extent_mapping 0.01% git [kernel] [k] btrfs_file_extent_compression 0.01% git [kernel] [k] btrfs_dir_name_len 0.01% git [kernel] [k] btrfs_item_offset 0.01% git [kernel] [k] btrfs_extent_flags 0.01% git [kernel] [k] btrfs_set_item_offset 0.01% git [kernel] [k] btrfs_set_extent_refs 0.01% git [kernel] [k] btrfs_set_inode_flags 0.01% git [kernel] [k] btrfs_set_inode_rdev 0.01% git [kernel] [k] btrfs_set_inode_nlink 0.01% git [kernel] [k] btrfs_set_inode_transid 0.01% git [kernel] [k] btrfs_find_ordered_sum 0.01% git [kernel] [k] free_extent_buffer 0.01% git [kernel] [k] alloc_extent_state 0.01% git [kernel] [k] set_extent_uptodate 0.01% git [kernel] [k] lock_extent_bits 0.01% git [kernel] [k] lock_extent 0.01% git [kernel] [k] set_extent_buffer_dirty 0.01% git [kernel] [k] clear_extent_buffer_dirty 0.01% git [kernel] [k] btrfs_map_block 0.01% git [kernel] [k] btrfs_queue_worker 0.01% git [kernel] [k] btrfs_clear_lock_blocking 0.01% git [kernel] [k] btrfs_set_lock_blocking 0.01% git [kernel] [k] btrfs_tree_unlock 0.01% git [kernel] [k] spin_unlock 0.01% git [kernel] [k] add_delayed_tree_ref 0.01% git [kernel] [k] security_inode_permission 0.01% git [kernel] [k] cap_inode_alloc_security 0.01% git [kernel] [k] shash_update_unaligned 0.01% git [kernel] [k] chksum_update 0.01% git [kernel] [k] get_request 0.01% git [kernel] [k] __make_request 0.01% git [kernel] [k] blk_recount_segments 0.01% git [kernel] [k] rb_insert_color 0.01% git [kernel] [k] strncmp 0.01% git [kernel] [k] strnlen_user 0.01% git [kernel] [k] __copy_from_user_ll 0.01% git [kernel] [k] get_random_bytes 0.01% git [kernel] [k] process_echoes 0.01% git [kernel] [k] do_con_write 0.01% git [kernel] [k] scsi_softirq_done 0.01% git [kernel] [k] acpi_pm_read 0.01% git [kernel] [k] skb_clone 0.01% git [kernel] [k] ip_route_input 0.01% git [kernel] [k] tcp_sendmsg 0.01% git [kernel] [k] preempt_schedule 0.01% git [kernel] [k] rwsem_down_failed_common 0.01% basename libc-2.11.so [.] __gconv_transform_utf8_internal 0.01% basename [kernel] [k] bprm_mm_init 0.01% basename [kernel] [k] radix_tree_lookup_slot # # (For a higher level overview, try: perf report --sort comm,dso) # -JimC -- James Cloos <cloos@jhcloos.com> OpenPGP: 1024D/ED7DAEA6 -- To unsubscribe from this 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