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SubjectRe: [PATCH] concurrent block allocation for ext2 against 2.5.64
On Sat, Mar 15, 2003 at 12:24:31AM -0800, William Lee Irwin III wrote:
> Next pass involves lockmeter:

Throughput 39.2014 MB/sec 128 procs
dbench 128 142.51s user 10828.91s system 964% cpu 18:57.88 total

That's an 83% reduction in throughput from applying lockmeter.

Um, somebody should look into this. The thing is a bloody doorstop:

vma samples %-age symbol name
c012fbbd 20829312 51.3129 .text.lock.lockmeter
c012eb1c 3834281 9.44573 alloc_rwlock_struct
c0106f74 2940592 7.24413 default_idle
c025174c 2837008 6.98895 sync_buffer
c012ec58 1438542 3.54384 _metered_read_lock
c012e98c 1129385 2.78223 _metered_spin_lock
c012ea94 1044869 2.57403 _metered_spin_unlock
c012e89c 982225 2.41971 lstat_update
c012efd0 702482 1.73056 _metered_write_lock
c01cca10 657780 1.62044 __copy_to_user_ll
c012e6f0 587940 1.44839 lstat_lookup
c0251910 551723 1.35917 add_event_entry
c012ee70 512327 1.26211 _metered_read_unlock
c0109a30 298994 0.73657 apic_timer_interrupt
c01cca78 202482 0.498813 __copy_from_user_ll
c0120730 159350 0.392558 current_kernel_time
c012f148 133340 0.328482 _metered_write_unlock
c02516a8 127259 0.313502 add_sample
c0251634 112579 0.277338 add_sample_entry
c0118cac 102231 0.251845 scheduler_tick
c010f080 75857 0.186873 timer_interrupt

AFAICT the actual results are also garbage.


System: Linux curly 2.5.64 #1 SMP Sat Mar 15 00:49:53 PST 2003 i686
Total counts

All (32) CPUs

Start time: Sat Mar 15 01:20:18 2003
End time: Sat Mar 15 01:39:03 2003
Delta Time: 1129.85 sec.
Hash table slots in use: 216.
Global read lock slots in use: 999.

*************************** Warnings! ******************************
Read Lock table overflowed.

The data in this report may be in error due to this.
************************ End of Warnings! **************************


- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SPINLOCKS HOLD WAIT
UTIL CON MEAN( MAX ) MEAN( MAX )(% CPU) TOTAL NOWAIT SPIN RJECT NAME

2.6% 0us 821511883 97.4% 0.15% 2.5% *TOTAL*

0% 0% 0us 179 100% 0% 0% [0xc0433810]
0% 0% 0us 179 100% 0% 0% uart_wait_modem_status+0x168

0% 0% 0us 179 100% 0% 0% [0xc0434260]
0% 0% 0us 179 100% 0% 0% uart_wait_modem_status+0x18c

0% 0% 0us 129 100% 0% 0% [0xee1c90f0]
0% 0% 0us 129 100% 0% 0% autofs4_dir_rmdir+0xa0

0% 0% 0us 1 100% 0% 0% [0xee66b020]
0% 0% 0us 1 100% 0% 0% inet_rtm_newaddr+0x54

0% 0% 0us 49 100% 0% 0% [0xef30b8d4]
0% 0% 0us 16 100% 0% 0% do_mmap_pgoff+0x468
0% 0% 0us 33 100% 0% 0% sys_mlockall+0x88

0% 3.7% 0us 46947 96.3% 3.7% 0% [0xef3c85f4]
0% 3.7% 0us 46947 96.3% 3.7% 0% sys_fchmod+0xb8

0% 0% 0us 227 100% 0% 0% [0xef53e994]
0% 0% 0us 227 100% 0% 0% scsi_dispatch_cmd+0x38

0% 0% 0us 2770 100% 0% 0% [0xef55011c]
0% 0% 0us 2218 100% 0% 0% __constant_c_and_count_memset+0x24
0% 0% 0us 552 100% 0% 0% _decode_session+0x130

0% 0% 0us 2218 100% 0% 0% [0xef550128]
0% 0% 0us 2218 100% 0% 0% _decode_session+0x14

0% 0% 0us 2 100% 0% 0% [0xef6455a0]
0% 0% 0us 1 100% 0% 0% filemap_sync+0xcc
0% 0% 0us 1 100% 0% 0% mprotect_fixup+0x14

0% 0% 0us 2 100% 0% 0% [0xf04c7df0]
0% 0% 0us 1 100% 0% 0% get_one_pte_map_nested+0x58
0% 0% 0us 1 100% 0% 0% insert_vm_struct+0xc

0% 3.0% 0us 1543963 97.0% 3.0% 0% __per_cpu_end+0xdc
0% 3.6% 0us 220 96.4% 3.6% 0% clear_inode+0x58
0% 1.9% 0us 258185 98.1% 1.9% 0% dentry_iput+0x24
0% 4.3% 0us 119875 95.7% 4.3% 0% do_pollfd+0x68
0% 2.6% 0us 258168 97.4% 2.6% 0% do_poll+0x7c
0% 3.2% 0us 385561 96.8% 3.2% 0% sys_poll+0x218
0% 3.4% 0us 258115 96.6% 3.4% 0% sys_select+0x7c
0% 0% 0us 5 100% 0% 0% sys_select+0x204
0% 3.2% 0us 263834 96.8% 3.2% 0% sys_select+0x340

0% 0% 0us 3 100% 0% 0% _binary_usr_initramfs_data_cpio_gz_end+0x13c
0% 0% 0us 2 100% 0% 0% do_rw_proc+0x24
0% 0% 0us 1 100% 0% 0% proc_readsys+0xc

0% 31.8% 0us 904982 68.2% 31.8% 0% log_buf+0x5c60
0% 0% 0us 3 100% 0% 0% .text.lock.eventpoll+0x6
0% 20.0% 0us 80 80.0% 20.0% 0% .text.lock.pageattr+0x3f
0% 35.8% 0us 2302 64.2% 35.8% 0% __register_serial+0x98
0% 33.3% 0us 3 66.7% 33.3% 0% aio_kick_handler+0x8
0% 100% 0us 2 0% 100% 0% block_truncate_page+0x20c
0% 31.9% 0us 138 68.1% 31.9% 0% copy_msqid_from_user+0xbc
0% 36.4% 0us 2176 63.6% 36.4% 0% ep_poll+0x34
0% 24.4% 0us 639 75.6% 24.4% 0% flock_make_lock+0x38
0% 36.5% 0us 639 63.5% 36.5% 0% flock_make_lock+0xb0
0% 34.6% 0us 2331 65.4% 34.6% 0% get_pci_port+0x14c
0% 44.0% 0us 639 56.0% 44.0% 0% locks_alloc_lock
0% 35.6% 0us 225 64.4% 35.6% 0% parse_extended+0x184
0% 12.7% 0us 71 87.3% 12.7% 0% pipe_write+0x258
0% 31.7% 0us 895062 68.3% 31.7% 0% proc_pid_make_inode+0x3c
0% 33.3% 0us 3 66.7% 33.3% 0% read_events+0xe8
0% 0% 0us 2 100% 0% 0% serial8250_type+0x8
0% 39.4% 0us 635 60.6% 39.4% 0% unuse_pmd+0x11c
0% 12.5% 0us 32 87.5% 12.5% 0% vfs_create+0x90

0% 0% 0us 2 100% 0% 0% log_buf+0x5c80
0% 0% 0us 2 100% 0% 0% kmap_atomic+0x8

0% 1.6% 0us 1045171 98.4% 1.6% 0% lru_add_active_pvecs__per_cpu+0x20
0% 1.6% 0us 1045150 98.4% 1.6% 0% bd_set_size+0x24
0% 0% 0us 21 100% 0% 0% bd_set_size+0x70

0% 0% 0us 2 100% 0% 0% pci_boards+0x22c
0% 0% 0us 2 100% 0% 0% mtrr_ioctl+0x4f8

0% 0% 0us 6 100% 0% 0% pci_boards+0x234
0% 0% 0us 6 100% 0% 0% __constant_c_and_count_memset+0x50

0% 0% 0us 1129503 100% 0% 0% pci_vendor_list+0x4200
0% 0% 0us 1129503 100% 0% 0% destroy_context+0x4c

0% 0% 0us 1129503 100% 0% 0% pci_vendor_list+0x47d0
0% 0% 0us 1129503 100% 0% 0% mtrr_write+0x194

0% 0% 0us 149 100% 0% 0% pid_hash+0x8680
0% 0% 0us 4 100% 0% 0% bio_add_page+0xa8
0% 0% 0us 140 100% 0% 0% load_balance+0x1e8
0% 0% 0us 5 100% 0% 0% scheduler_tick+0x180

0% 0% 0us 1129503 100% 0% 0% pid_hash+0x8824
0% 0% 0us 1129503 100% 0% 0% init_new_context+0xe0

0% 3.9% 0us 2900686 96.1% 3.9% 0% pid_hash+0x89c0
0% 4.0% 0us 1450343 96.0% 4.0% 0% __pagevec_lru_add+0xa4
0% 3.8% 0us 1450343 96.2% 3.8% 0% do_invalidatepage

0% 6.5% 0us 2985077 93.5% 6.5% 0% pid_hash+0x89e0
0% 6.8% 0us 1492680 93.2% 6.8% 0% sys_swapon+0xe4
0% 50.0% 0us 2 50.0% 50.0% 0% sys_swapon+0x1bc
0% 6.1% 0us 1492393 93.9% 6.1% 0% sys_swapon+0x204
0% 0% 0us 2 100% 0% 0% sys_swapon+0x244

0% 0% 0us 1089 100% 0% 0% pid_hash+0x8a00
0% 0% 0us 1089 100% 0% 0% __block_prepare_write+0x428

0% 7.6% 0us 4513471 92.4% 7.6% 0% pid_hash+0x8a20
0% 25.0% 0us 4929 75.0% 25.0% 0% .text.lock.namei+0x74
0% 8.8% 0us 324046 91.2% 8.8% 0% .text.lock.namei+0x1ac
0% 7.2% 0us 2491551 92.8% 7.2% 0% __follow_down+0x4c
0% 50.0% 0us 2 50.0% 50.0% 0% blkdev_put+0x110
0% 2.4% 0us 1185 97.6% 2.4% 0% count+0x28
0% 11.4% 0us 17982 88.6% 11.4% 0% do_fcntl+0x154
0% 0% 0us 8 100% 0% 0% do_open+0x258
0% 10.0% 0us 20 90.0% 10.0% 0% file_ioctl+0x138
0% 8.6% 0us 6114 91.4% 8.6% 0% locate_fd+0xd0
0% 7.6% 0us 265244 92.4% 7.6% 0% send_sigio+0x94
0% 3.5% 0us 368709 96.5% 3.5% 0% send_sigurg+0x24
0% 7.4% 0us 54539 92.6% 7.4% 0% send_sigurg+0x84
0% 10.6% 0us 368709 89.4% 10.6% 0% setfl+0xa8
0% 9.0% 0us 608895 91.0% 9.0% 0% setfl+0x110
0% 0% 0us 2 100% 0% 0% sys_ioctl+0xf0
0% 7.2% 0us 1536 92.8% 7.2% 0% sys_uselib+0x12c

0% 0% 0us 390 100% 0% 0% pid_hash+0x8a60
0% 0% 0us 195 100% 0% 0% csi_m+0x258
0% 0% 0us 195 100% 0% 0% cursor_report+0x2c

0% 21.7% 0us 25815 78.3% 21.7% 0% tvec_bases__per_cpu+0x24
0% 7.1% 0us 4725 92.9% 7.1% 0% in_group_p+0xc
0% 24.9% 0us 21090 75.1% 24.9% 0% sys_getgroups+0x38

0% 0% 0us 1 100% 0% 0% tvec_bases__per_cpu+0x554
0% 0% 0us 1 100% 0% 0% .text.lock.mprotect+0x41

0% 0% 0us 1089 100% 0% 0% tvec_bases__per_cpu+0xac0
0% 0% 0us 1089 100% 0% 0% get_vm_area+0x4c

0% 0% 0us 1770 100% 0% 0% tvec_bases__per_cpu+0xc70
0% 0% 0us 225 100% 0% 0% __getblk_slow+0x40
0% 0% 0us 445 100% 0% 0% __getblk_slow+0x80
0% 0% 0us 220 100% 0% 0% clear_inode+0x68
0% 0% 0us 880 100% 0% 0% clear_inode+0xbc

0% 0% 0us 69 100% 0% 0% .text.lock.mempool+0x4a
0% 0.00% 0us 670256 100% 0.00% 0% .text.lock.namei+0xac
0% 0% 0us 587 100% 0% 0% __bounce_end_io_read+0x38
0% 0% 0us 140 100% 0% 0% __constant_memcpy+0x10
0% 0.99% 0us 829218 99.0% 0.99% 0% __constant_memcpy+0xf0
0% 0.00% 0us 2491547 100% 0.00% 0% __follow_down+0x60
0% 0.94% 0us 21329 99.1% 0.94% 0% __free_pages_bulk+0x2c
0% 100% 0us 2119165 0% 0% 100% __free_pages_bulk+0x88
0% 57.2% 0us 30598 42.8% 57.2% 0% __ioremap+0x20
0% 0.05% 0us 30598 100% 0.05% 0% __ioremap+0x2c
0% 78.7% 0us 7429 21.3% 78.7% 0% __ioremap+0x68
0% 0.01% 0us 28980 100% 0.01% 0% __set_page_dirty_buffers+0x110
0% 3.5% 0us 20255 96.5% 3.5% 0% balance_dirty_pages+0xb8
0% 0% 0us 4 100% 0% 0% bio_add_page+0x104
0% 0% 0us 4 100% 0% 0% bio_alloc+0xf8
0% 0% 0us 23110 100% 0% 0% cpu_raise_softirq+0x8
0% 0% 0us 142 100% 0% 0% create_workqueue+0x144
0% 0% 0us 327491 100% 0% 0% dentry_open+0x14c
0% 0% 0us 7 100% 0% 0% do_anonymous_page+0x268
0% 0% 0us 7 100% 0% 0% do_page_fault+0xfc
0% 0.71% 0us 203785 99.3% 0.71% 0% do_proc_readlink+0x38
0% 0% 0us 901 100% 0% 0% do_wp_page+0x2cc
0% 0% 0us 22 100% 0% 0% do_wp_page+0x45c
0% 0% 0us 138 100% 0% 0% dup_mmap+0x120
0% 0% 0us 138 100% 0% 0% dup_mmap+0x158
0% 0% 0us 138 100% 0% 0% dup_mmap+0x220
0% 0% 0us 138 100% 0% 0% dup_mmap+0xc8
0% 0.34% 0us 1782 99.7% 0.34% 0% frag_show+0x40
0% 0% 0us 1019899 100% 0% 0% free_buffer_head+0x34
0% 0% 0us 14 100% 0% 0% free_one_pmd+0x168
0% 0.01% 0us 11129 100% 0.01% 0% get_dirty_limits+0x3c
0% 0% 0us 392486 100% 0% 0% get_empty_filp+0x12c
0% 0% 0us 838 100% 0% 0% handle_mm_fault+0xe0
0% 0% 0us 14 100% 0% 0% hugetlb_report_meminfo+0x34
0% 0% 0us 1185123 100% 0% 0% init_buffer_head+0x4c
0% 0% 0us 7 100% 0% 0% kmap_atomic+0x14
0% 0% 0us 75 100% 0% 0% ksoftirqd+0x100
0% 0% 0us 77 100% 0% 0% ksoftirqd+0x10c
0% 0% 0us 152 100% 0% 0% ksoftirqd+0x114
0% 0% 0us 5 100% 0% 0% kunmap+0x20
0% 0.22% 0us 487201 99.8% 0.22% 0% mem_open+0x8
0% 0.65% 0us 510091 99.4% 0.65% 0% mounts_release+0x8
0% 0% 0us 2 100% 0% 0% number+0x1fc
0% 0% 0us 138 100% 0% 0% proc_doutsstring+0x78
0% 0.39% 0us 1275 99.6% 0.39% 0% proc_info_read+0x98
0% 0.38% 0us 675021 99.6% 0.38% 0% proc_pid_cmdline+0x54
0% 0% 0us 714 100% 0% 0% pte_alloc_kernel+0x74
0% 12.2% 0us 312871 87.8% 0% 12.2% remap_area_pages+0x1f0
0% 0% 0us 8 100% 0% 0% risc_code01+0x1490
0% 0% 0us 2186 100% 0% 0% risc_code01+0x1b24
0% 0.13% 0us 2225 99.9% 0.13% 0% risc_code01+0x4f9c
0% 0% 0us 129 100% 0% 0% scheduler_tick+0x2e0
0% 0.03% 0us 1282523 100% 0.03% 0% search_exception_table+0x3c
0% 0% 0us 265244 100% 0% 0% send_sigio+0xa0
0% 0.94% 0us 14301378 99.1% 0.94% 0% send_sigio_to_task+0x30
0% 0% 0us 54539 100% 0% 0% send_sigurg+0x94
0% 0% 0us 4 100% 0% 0% sget+0x30
0% 0% 0us 129 100% 0% 0% shrink_cache+0x264
0% 0% 0us 30 100% 0% 0% shrink_list+0x420
0% 0.00% 0us 1132765 100% 0.00% 0% simd_math_error+0x28
0% 0% 0us 1132765 100% 0% 0% simd_math_error+0x94
0% 0.10% 0us 10704360 99.9% 0.10% 0% split_large_page+0x4
0% 2.5% 0us 11583 97.5% 2.5% 0% sys_access+0x150
0% 3.0% 0us 41401 97.0% 3.0% 0% sys_fstatfs+0x18
0% 0% 0us 14 100% 0% 0% sys_mincore+0x138
0% 0% 0us 4 100% 0% 0% sys_semtimedop+0x3fc
0% 0% 0us 174724 100% 0% 0% udp_queue_rcv_skb+0x5c
0% 2.4% 0us 761925513 97.6% 0% 2.4% udp_recvmsg+0x26c
0% 3.9% 0us 1705264 96.1% 3.9% 0% valid_swaphandles+0x4c
0% 1.2% 0us 1782 98.8% 1.2% 0% vmstat_next+0x38
0% 50.0% 0us 2 50.0% 50.0% 0% vsnprintf+0x20
0% 0% 0us 2518 100% 0% 0% zap_pte_range+0x2e0
0% 0% 0us 805 100% 0% 0% zap_pte_range+0x9c

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
RWLOCK READS HOLD MAX RDR BUSY PERIOD WAIT
UTIL CON MEAN RDRS MEAN( MAX ) MEAN( MAX )( %CPU) TOTAL NOWAIT SPIN NAME

0.02% 0us 26339364 100% 0.02% *TOTAL*

0.01% 0% 6.7us 1 6.7us( 628us) 0us 2196 100% 0% [0xc1be51c4]
0% 0us 2196 100% 0% do_pipe+0x1bc

0.00% 0% 11.5us 1 11us( 130us) 0us 3 100% 0% [0xee6ae8a4]
0% 0us 3 100% 0% __constant_memcpy+0x68

0.00% 0% 13.0us 1 13us( 286us) 0us 1099 100% 0% [0xee8c21c0]
0% 0us 1099 100% 0% risc_code01+0x4e1c

55.9% 0% 10.4us 8 271us( 231ms) 0us 1 100% 0% [0xef3c858c]
0% 0us 1 100% 0% sys_setgroups16+0xcc

0.04% 0% 19.1us 1 19us( 481us) 0us 1 100% 0% [0xf057b3a4]
0% 0us 1 100% 0% sys_ioctl+0x38

0.03% 0% 15.8us 1 16us( 337us) 0us 1 100% 0% [0xf057d364]
0% 0us 1 100% 0% set_user_nice

0.01% 0% 6.0us 2 6.1us( 337us) 0us 11056 100% 0% __per_cpu_end+0x1c
0% 0us 11056 100% 0% pipe_write+0x6c

0.07% 0% 202.6us 1 203us(1013us) 0us 3652 100% 0% pid_hash+0x8660
0% 0us 18 100% 0% copy_files+0xd4
0% 0us 49 100% 0% internal_add_timer+0x98
0% 0us 1130 100% 0% sys_capset+0x64
0% 0us 2455 100% 0% sys_personality+0x30

93.4% 0.08% 7.9us 5 354us( 232ms) 0us 3151445 100% 0.08% pid_hash+0x8a40
0% 0us 639 100% 0% lease_alloc+0x30
0% 0us 7 100% 0% setup_swap_extents+0xa8
0.08% 0us 2264074 100% 0.08% try_to_unuse+0xb8
0.08% 0us 886725 100% 0.08% try_to_unuse+0x2a8

1620% 0% 7.5us 15 2027us( 232ms) 0us 13185756 100% 0% serial_pci_tbl+0xb8c
0% 0us 13185756 100% 0% mm_init+0xb8

0% 0us 20917 100% 0% buffered_rmqueue+0x38
0% 0us 16081 100% 0% find_local_symbol+0x8
0% 0us 2513995 100% 0% get_chrfops+0x15c
0% 0us 45266 100% 0% proc_pid_stat+0x120
0.05% 0us 2864093 100% 0.05% sys_getgroups16+0x5c
0.01% 0us 76659 100% 0.01% sys_setgroups16+0x64
0% 0us 4447143 100% 0% sys_swapon+0x16c

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
RWLOCK WRITES HOLD WAIT (ALL) WAIT (WW)
UTIL CON MEAN( MAX ) MEAN( MAX )( %CPU) MEAN( MAX ) TOTAL NOWAIT SPIN( WW ) NAME

0% 0us 0us 16216231 100% 0%( 0%) *TOTAL*

0% 0% 0us 0us 1 100% 0%( 0%) [0xe0fff12c]
0% 0% 0us 0us 1 100% 0%( 0%) task_name+0xb0

0% 0% 0us 0us 3 100% 0%( 0%) [0xee6ae8a4]
0% 0% 0us 0us 1 100% 0%( 0%) generic_shutdown_super+0x84
0% 0% 0us 0us 1 100% 0%( 0%) locks_wake_up_blocks+0x58
0% 0% 0us 0us 1 100% 0%( 0%) schedule+0x278

0% 0% 0us 0us 4 100% 0%( 0%) [0xee78d7c4]
0% 0% 0us 0us 4 100% 0%( 0%) free_dma+0x1c

0% 0% 0us 0us 428518 100% 0%( 0%) __per_cpu_end+0x1c8
0% 0% 0us 0us 428518 100% 0%( 0%) posix_test_lock+0x28

0% 0% 0us 0us 35 100% 0%( 0%) cpu_devices+0xb48
0% 0% 0us 0us 35 100% 0%( 0%) fn_hash_delete+0x1a8

0% 0% 0us 0us 12 100% 0%( 0%) memblk_devices+0x904
0% 0% 0us 0us 6 100% 0%( 0%) __func__.1+0x130d8
0% 0% 0us 0us 6 100% 0%( 0%) __func__.1+0x135a4

0% 0% 0us 0us 51985 100% 0%( 0%) pid_hash+0x8a40
0% 0% 0us 0us 51985 100% 0%( 0%) __kill_fasync+0x1c

0% 0% 0us 0us 6 100% 0%( 0%) __func__.1+0x13104
0% 0% 0us 0us 6 100% 0%( 0%) __func__.1+0x13d24
0% 0% 0us 0us 21 100% 0%( 0%) badness+0x30
0% 0% 0us 0us 338541 100% 0%( 0%) badness+0xdc
0% 0% 0us 0us 6 100% 0%( 0%) de_thread+0x25c
0% 0% 0us 0us 447544 100% 0%( 0%) de_thread+0x30
0% 0% 0us 0us 105 100% 0%( 0%) fn_hash_delete+0x220
0% 0% 0us 0us 4 100% 0%( 0%) generic_shutdown_super+0x28
0% 0% 0us 0us 1825042 100% 0%( 0%) get_swap_page+0x8c
0% 0% 0us 0us 20 100% 0%( 0%) ifind+0x5c
0% 0% 0us 0us 25 100% 0%( 0%) inode_change_ok+0x98
0% 0% 0us 0us 2 100% 0%( 0%) lock_get_status+0x54
0% 0% 0us 0us 392487 100% 0%( 0%) param_get_intarray+0x5c
0% 0% 0us 0us 20 100% 0%( 0%) param_set_copystring+0x4c
0% 0% 0us 0us 510098 100% 0%( 0%) proc_pid_follow_link+0x38
0% 0% 0us 0us 2063912 100% 0%( 0%) proc_pid_maps_get_line+0x128
0% 0% 0us 0us 2063900 100% 0%( 0%) proc_pid_maps_get_line+0x48
0% 0% 0us 0us 2332202 100% 0%( 0%) proc_pid_status+0x120
0% 0% 0us 0us 2105301 100% 0%( 0%) proc_pid_status+0x184
0% 0% 0us 0us 1492685 100% 0%( 0%) remove_exclusive_swap_page+0xc
0% 0% 0us 0us 1492406 100% 0%( 0%) swap_entry_free+0x8
0% 0% 0us 0us 332694 100% 0%( 0%) swap_info_get+0xe0
0% 0% 0us 0us 338646 100% 0%( 0%) sys_fchown16+0x24
_________________________________________________________________________________________________________________________
Number of read locks found=10

Hanna, I suspect you're not to blame, but rather the global lock...


-- wli
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