global traced_pid, sleep_time, dequeue;
global this_sleep;
global debug = 0;
+global reason_len;
function log_event:long (p:long)
{
}
ansi_clear_screen();
- printf("%-32s %12s %12s %12s %7s%%\n",
- "Reason", "Count", "Average(us)", "Maximum(us)", "Percent");
+ printf("%-*s %12s %12s %12s %7s%%\n",
+ @max(reason_len)+1, "Reason", "Count", "Average(us)", "Maximum(us)", "Percent");
foreach ([backtrace] in sort_latencies- limit 20) {
#print reason count average max percentage
cause = translate (backtrace);
# if can't find reason print out a backtrace
if (cause == "" && debug)
printf("%s\n", func_backtrace(backtrace));
- printf("%-32s ", cause);
+ printf("%-*s ", @max(reason_len)+1, cause);
p = (@sum(sleep_time[backtrace])*100)/total;
printf("%12d %12d %12d %7d%%\n",
@count(sleep_time[backtrace]),
# The vast majority of translations were mechanically generated from the
# latencytop (http://www.latencytop.org/) translation file:
# /usr/share/latencytop/latencytop.trans .
-probe begin {
- priority["vfs_read"] = 1;
- reason["vfs_read"] = "Reading from file";
-
- priority["vfs_write"] = 1;
- reason["vfs_write"] = "Writing to file";
-
- priority["__mark_inode_dirty"] = 1;
- reason["__mark_inode_dirty"] = "Marking inode dirty";
-
- priority["vfs_readdir"] = 1;
- reason["vfs_readdir"] = "Reading directory content";
-
- priority["vfs_unlink"] = 1;
- reason["vfs_unlink"] = "Unlinking file";
-
- priority["blocking_notifier_call_chain"] = 1;
- reason["blocking_notifier_call_chain"] = "Blocking notifier";
-
- priority["lock_super"] = 1;
- reason["lock_super"] = "Superblock lock contention";
-
- priority["bdi_sync_supers"] = 1;
- reason["bdi_sync_supers"] = "Sync superblock";
-
- priority["vfs_create"] = 1;
- reason["vfs_create"] = "Creating a file";
-
- priority["__bread"] = 2;
- reason["__bread"] = "Synchronous buffer read";
-
- priority["do_generic_mapping_read"] = 2;
- reason["do_generic_mapping_read"] = "Reading file data";
-
- priority["sock_sendmsg"] = 2;
- reason["sock_sendmsg"] = "Sending data over socket";
-
- priority["do_sys_open"] = 2;
- reason["do_sys_open"] = "Opening file";
-
- priority["do_sys_poll"] = 2;
- reason["do_sys_poll"] = "Waiting for event (poll)";
-
- priority["core_sys_select"] = 2;
- reason["core_sys_select"] = "Waiting for event (select)";
-
- priority["proc_reg_read"] = 2;
- reason["proc_reg_read"] = "Reading from /proc file";
-
- priority["__pollwait"] = 2;
- reason["__pollwait"] = "Waiting for event (poll)";
-
- priority["sys_fcntl"] = 2;
- reason["sys_fcntl"] = "FCNTL system call";
-
- priority["scsi_error_handler"] = 2;
- reason["scsi_error_handler"] = "SCSI error handler";
-
- priority["proc_root_readdir"] = 2;
- reason["proc_root_readdir"] = "Reading /proc directory";
-
- priority["ksoftirqd"] = 2;
- reason["ksoftirqd"] = "Waking ksoftirqd";
-
- priority["run_ksoftirqd"] = 2;
- reason["run_ksoftirqd"] = "Waking ksoftirqd";
-
- priority["migration_thread"] = 2;
- reason["migration_thread"] = "migration() kernel thread";
-
- priority["do_unlinkat"] = 2;
- reason["do_unlinkat"] = "Unlinking file";
-
- priority["__wait_on_buffer"] = 2;
- reason["__wait_on_buffer"] = "Waiting for buffer IO to complete";
-
- priority["pdflush"] = 2;
- reason["pdflush"] = "pdflush() kernel thread";
-
- priority["kjournald"] = 2;
- reason["kjournald"] = "kjournald() kernel thread";
-
- priority["kjournald2"] = 2;
- reason["kjournald2"] = "jdb2() kernel thread";
-
- priority["bdi_writeback_task"] = 2;
- reason["bdi_writeback_task"] = "Flush data to backing device";
-
- priority["bdi_writeback_thread"] = 2;
- reason["bdi_writeback_thread"] = "Flush data to backing dev";
-
- priority["bdi_forker_task"] = 2;
- reason["bdi_forker_task"] = "bdi-* kernel thread";
-
- priority["dm_wait_for_completion"] = 2;
- reason["dm_wait_for_completion"] = "Waiting for device mapper ops";
-
- priority["blkdev_ioctl"] = 2;
- reason["blkdev_ioctl"] = "block device IOCTL";
-
- priority["kauditd_thread"] = 2;
- reason["kauditd_thread"] = "kernel audit daemon";
-
- priority["tty_ioctl"] = 2;
- reason["tty_ioctl"] = "TTY IOCTL";
-
- priority["do_sync_write"] = 2;
- reason["do_sync_write"] = "synchronous write";
-
- priority["kthreadd"] = 2;
- reason["kthreadd"] = "kthreadd kernel thread";
-
- priority["usb_port_resume"] = 2;
- reason["usb_port_resume"] = "Waking up USB device";
-
- priority["usb_autoresume_device"] = 2;
- reason["usb_autoresume_device"] = "Waking up USB device";
-
- priority["khugepaged"] = 2;
- reason["khugepaged"] = "khugepaged() kernel thread";
-
- priority["kswapd"] = 2;
- reason["kswapd"] = "kswapd() kernel thread";
-
- priority["md_thread"] = 2;
- reason["md_thread"] = "Raid resync kernel thread";
-
- priority["i915_wait_request"] = 2;
- reason["i915_wait_request"] = "Waiting for GPU command to complete";
-
- priority["request_module"] = 2;
- reason["request_module"] = "Loading a kernel module";
-
- priority["tty_wait_until_sent"] = 3;
- reason["tty_wait_until_sent"] = "Waiting for TTY to finish sending";
-
- priority["pipe_read"] = 3;
- reason["pipe_read"] = "Reading from a pipe";
-
- priority["pipe_write"] = 3;
- reason["pipe_write"] = "Writing to a pipe";
-
- priority["pipe_wait"] = 3;
- reason["pipe_wait"] = "Waiting for pipe data";
-
- priority["read_block_bitmap"] = 3;
- reason["read_block_bitmap"] = "Reading EXT3 block bitmaps";
-
- priority["scsi_execute_req"] = 3;
- reason["scsi_execute_req"] = "Executing raw SCSI command";
-
- priority["sys_wait4"] = 3;
- reason["sys_wait4"] = "Waiting for a process to die";
-
- priority["sr_media_change"] = 3;
- reason["sr_media_change"] = "Checking for media change";
-
- priority["sr_do_ioctl"] = 3;
- reason["sr_do_ioctl"] = "SCSI cdrom ioctl";
-
- priority["sd_ioctl"] = 3;
- reason["sd_ioctl"] = "SCSI disk ioctl";
-
- priority["sr_cd_check"] = 3;
- reason["sr_cd_check"] = "Checking CDROM media present";
-
- priority["ext3_read_inode"] = 3;
- reason["ext3_read_inode"] = "Reading EXT3 inode";
-
- priority["htree_dirblock_to_tree"] = 3;
- reason["htree_dirblock_to_tree"] = "Reading EXT3 directory htree";
-
- priority["ext3_readdir"] = 3;
- reason["ext3_readdir"] = "Reading EXT3 directory";
-
- priority["ext3_bread"] = 3;
- reason["ext3_bread"] = "Synchronous EXT3 read";
-
- priority["ext3_free_branches"] = 3;
- reason["ext3_free_branches"] = "Unlinking file on EXT3";
-
- priority["ext3_get_branch"] = 3;
- reason["ext3_get_branch"] = "Reading EXT3 indirect blocks";
-
- priority["ext3_find_entry"] = 3;
- reason["ext3_find_entry"] = "EXT3: Looking for file";
-
- priority["__ext3_get_inode_loc"] = 3;
- reason["__ext3_get_inode_loc"] = "Reading EXT3 inode";
-
- priority["ext3_delete_inode"] = 3;
- reason["ext3_delete_inode"] = "EXT3 deleting inode";
-
- priority["sync_page"] = 3;
- reason["sync_page"] = "Writing a page to disk";
-
- priority["tty_poll"] = 3;
- reason["tty_poll"] = "Waiting for TTY data";
-
- priority["tty_read"] = 3;
- reason["tty_read"] = "Waiting for TTY input";
-
- priority["tty_write"] = 3;
- reason["tty_write"] = "Writing data to TTY";
-
- priority["update_atime"] = 3;
- reason["update_atime"] = "Updating inode atime";
-
- priority["page_cache_sync_readahead"] = 3;
- reason["page_cache_sync_readahead"] = "Pagecache sync readahead";
-
- priority["do_fork"] = 3;
- reason["do_fork"] = "Fork() system call";
-
- priority["sys_mkdirat"] = 3;
- reason["sys_mkdirat"] = "Creating directory";
-
- priority["lookup_create"] = 3;
- reason["lookup_create"] = "Creating file";
- priority["inet_sendmsg"] = 3;
- reason["inet_sendmsg"] = "Sending TCP/IP data";
-
- priority["tcp_recvmsg"] = 3;
- reason["tcp_recvmsg"] = "Receiving TCP/IP data";
-
- priority["link_path_walk"] = 3;
- reason["link_path_walk"] = "Following symlink";
-
- priority["path_walk"] = 3;
- reason["path_walk"] = "Walking directory tree";
-
- priority["sys_getdents"] = 3;
- reason["sys_getdents"] = "Reading directory content";
-
- priority["unix_stream_recvmsg"] = 3;
- reason["unix_stream_recvmsg"] = "Waiting for data on unix socket";
-
- priority["ext3_mkdir"] = 3;
- reason["ext3_mkdir"] = "EXT3: Creating a directory";
-
- priority["journal_get_write_access"] = 3;
- reason["journal_get_write_access"] = "EXT3: Waiting for journal access";
-
- priority["synchronize_rcu"] = 3;
- reason["synchronize_rcu"] = "Waiting for RCU";
-
- priority["input_close_device"] = 3;
- reason["input_close_device"] = "Closing input device";
-
- priority["mousedev_close_device"] = 3;
- reason["mousedev_close_device"] = "Closing mouse device";
-
- priority["mousedev_release"] = 3;
- reason["mousedev_release"] = "Closing mouse device";
-
- priority["mousedev_open"] = 3;
- reason["mousedev_open"] = "Opening mouse device";
-
- priority["kmsg_read"] = 3;
- reason["kmsg_read"] = "Reading from dmesg";
-
- priority["sys_futex"] = 3;
- reason["sys_futex"] = "Userspace lock contention";
-
- priority["do_futex"] = 3;
- reason["do_futex"] = "Userspace lock contention";
-
- priority["vt_waitactive"] = 3;
- reason["vt_waitactive"] = "vt_waitactive IOCTL";
-
- priority["acquire_console_sem"] = 3;
- reason["acquire_console_sem"] = "Waiting for console access";
-
- priority["filp_close"] = 3;
- reason["filp_close"] = "Closing a file";
-
- priority["sync_inode"] = 3;
- reason["sync_inode"] = "(f)syncing an inode to disk";
-
- priority["ata_exec_internal_sg"] = 3;
- reason["ata_exec_internal_sg"] = "Executing internal ATA command";
-
- priority["writeback_inodes"] = 3;
- reason["writeback_inodes"] = "Writing back inodes";
-
- priority["ext3_orphan_add "] = 3;
- reason["ext3_orphan_add "] = "EXT3 adding orphan";
-
- priority["ext3_mark_inode_dirty "] = 3;
- reason["ext3_mark_inode_dirty "] = "EXT3 marking inode dirty";
-
- priority["ext3_unlink "] = 3;
- reason["ext3_unlink "] = "EXT3 unlinking file";
-
- priority["ext3_create"] = 3;
- reason["ext3_create"] = "EXT3 Creating a file";
-
- priority["log_do_checkpoint"] = 3;
- reason["log_do_checkpoint"] = "EXT3 journal checkpoint";
-
- priority["generic_delete_inode"] = 3;
- reason["generic_delete_inode"] = "Deleting an inode";
-
- priority["proc_delete_inode"] = 3;
- reason["proc_delete_inode"] = "Removing /proc file";
-
- priority["do_truncate"] = 3;
- reason["do_truncate"] = "Truncating file";
-
- priority["sys_execve"] = 3;
- reason["sys_execve"] = "Executing a program";
-
- priority["journal_commit_transaction"] = 3;
- reason["journal_commit_transaction"] = "EXT3: committing transaction";
-
- priority["__stop_machine_run"] = 3;
- reason["__stop_machine_run"] = "Freezing the kernel (for module load)";
-
- priority["sys_munmap"] = 3;
- reason["sys_munmap"] = "unmapping memory";
-
- priority["sys_mmap"] = 3;
- reason["sys_mmap"] = "mmaping memory";
-
- priority["sync_buffer"] = 3;
- reason["sync_buffer"] = "Writing buffer to disk (synchronous)";
-
- priority["inotify_inode_queue_event"] = 3;
- reason["inotify_inode_queue_event"] = "Inotify event";
-
- priority["proc_lookup"] = 3;
- reason["proc_lookup"] = "Looking up /proc file";
-
- priority["generic_make_request"] = 3;
- reason["generic_make_request"] = "Creating block layer request";
-
- priority["get_request_wait"] = 3;
- reason["get_request_wait"] = "Creating block layer request";
-
- priority["alloc_page_vma"] = 3;
- reason["alloc_page_vma"] = "Allocating a VMA";
-
- priority["blkdev_direct_IO"] = 3;
- reason["blkdev_direct_IO"] = "Direct block device IO";
-
- priority["sys_mprotect"] = 3;
- reason["sys_mprotect"] = "mprotect() system call";
-
- priority["shrink_icache_memory"] = 3;
- reason["shrink_icache_memory"] = "reducing inode cache memory footprint";
-
- priority["vfs_stat_fd"] = 3;
- reason["vfs_stat_fd"] = "stat() operation";
-
- priority["cdrom_open"] = 3;
- reason["cdrom_open"] = "opening cdrom device";
-
- priority["sys_epoll_wait"] = 3;
- reason["sys_epoll_wait"] = "Waiting for event (epoll)";
-
- priority["sync_sb_inodes"] = 3;
- reason["sync_sb_inodes"] = "Syncing inodes";
-
- priority["tcp_connect"] = 3;
- reason["tcp_connect"] = "TCP/IP connect";
-
- priority["ata_scsi_ioctl"] = 3;
- reason["ata_scsi_ioctl"] = "ATA/SCSI disk ioctl";
-
- priority["kvm_vcpu_ioctl"] = 3;
- reason["kvm_vcpu_ioctl"] = "KVM ioctl";
-
- priority["do_rmdir"] = 3;
- reason["do_rmdir"] = "Removing directory";
-
- priority["vfs_rmdir"] = 3;
- reason["vfs_rmdir"] = "Removing directory";
-
- priority["sys_flock"] = 3;
- reason["sys_flock"] = "flock() on a file";
-
- priority["usbdev_open"] = 3;
- reason["usbdev_open"] = "opening USB device";
-
- priority["lock_kernel"] = 3;
- reason["lock_kernel"] = "Big Kernel Lock contention";
-
- priority["blk_execute_rq"] = 3;
- reason["blk_execute_rq"] = "Submitting block IO";
-
- priority["scsi_cmd_ioctl"] = 3;
- reason["scsi_cmd_ioctl"] = "SCSI ioctl command";
-
- priority["acpi_ec_transaction"] = 3;
- reason["acpi_ec_transaction"] = "ACPI hardware access";
-
- priority["journal_get_undo_access"] = 3;
- reason["journal_get_undo_access"] = "Waiting for EXT3 journal undo operation";
-
- priority["i915_irq_wait"] = 3;
- reason["i915_irq_wait"] = "Waiting for GPU interrupt";
-
- priority["i915_gem_throttle_ioctl"] = 3;
- reason["i915_gem_throttle_ioctl"] = "Throttling GPU while waiting for commands";
-
- priority["do_page_fault"] = 5;
- reason["do_page_fault"] = "Page fault";
-
- priority["handle_mm_fault"] = 5;
- reason["handle_mm_fault"] = "Page fault";
-
- priority["filemap_fault"] = 5;
- reason["filemap_fault"] = "Page fault";
-
- priority["sync_filesystems"] = 5;
- reason["sync_filesystems"] = "Syncing filesystem";
-
- priority["sys_nanosleep"] = 5;
- reason["sys_nanosleep"] = "Application requested delay";
-
- priority["sys_pause"] = 5;
- reason["sys_pause"] = "Application requested delay";
-
- priority["evdev_read"] = 5;
- reason["evdev_read"] = "Reading keyboard/mouse input";
-
- priority["do_fsync"] = 5;
- reason["do_fsync"] = "fsync() on a file";
-
- priority["__log_wait_for_space"] = 5;
- reason["__log_wait_for_space"] = "Waiting for EXT3 journal space";
+function explain(symbol,pri,blah) {
+ priority[symbol] = pri
+ reason[symbol] = blah
+ reason_len <<< strlen(blah)
+}
+probe begin {
+ explain("SyS_epoll_wait",3,"Waiting for event (epoll)");
+ explain("SyS_flock",3,"flock() on a file");
+ explain("SyS_nanosleep",5,"Application requested delay");
+ explain("SyS_pause",5,"Application requested delay");
+ explain("__bread",2,"Synchronous buffer read");
+ explain("__ext3_get_inode_loc",3,"Reading EXT3 inode");
+ explain("__log_wait_for_space",5,"Waiting for EXT3 journal space");
+ explain("__mark_inode_dirty",1,"Marking inode dirty");
+ explain("__pollwait",2,"Waiting for event (poll)");
+ explain("__stop_machine_run",3,"Freezing the kernel (for module load)");
+ explain("__wait_on_buffer",2,"Waiting for buffer IO to complete");
+ explain("acpi_ec_transaction",3,"ACPI hardware access");
+ explain("acquire_console_sem",3,"Waiting for console access");
+ explain("alloc_page_vma",3,"Allocating a VMA");
+ explain("ata_exec_internal_sg",3,"Executing internal ATA command");
+ explain("ata_scsi_ioctl",3,"ATA/SCSI disk ioctl");
+ explain("bdi_forker_task",2,"bdi-* kernel thread");
+ explain("bdi_sync_supers",1,"Sync superblock");
+ explain("bdi_writeback_task",2,"Flush data to backing device");
+ explain("bdi_writeback_thread",2,"Flush data to backing dev");
+ explain("blk_execute_rq",3,"Submitting block IO");
+ explain("blkdev_direct_IO",3,"Direct block device IO");
+ explain("blkdev_ioctl",2,"block device IOCTL");
+ explain("blocking_notifier_call_chain",1,"Blocking notifier");
+ explain("cdrom_open",3,"opening cdrom device");
+ explain("core_sys_select",2,"Waiting for event (select)");
+ explain("dm_wait_for_completion",2,"Waiting for device mapper ops");
+ explain("do_fork",3,"Fork() system call");
+ explain("do_fsync",5,"fsync() on a file");
+ explain("do_futex",3,"Userspace lock contention");
+ explain("do_generic_mapping_read",2,"Reading file data");
+ explain("do_page_fault",5,"Page fault");
+ explain("do_rmdir",3,"Removing directory");
+ explain("do_sync_write",2,"synchronous write");
+ explain("do_sys_open",2,"Opening file");
+ explain("do_sys_poll",2,"Waiting for event (poll)");
+ explain("do_truncate",3,"Truncating file");
+ explain("do_unlinkat",2,"Unlinking file");
+ explain("evdev_read",5,"Reading keyboard/mouse input");
+ explain("ext3_bread",3,"Synchronous EXT3 read");
+ explain("ext3_create",3,"EXT3 Creating a file");
+ explain("ext3_delete_inode",3,"EXT3 deleting inode");
+ explain("ext3_find_entry",3,"EXT3: Looking for file");
+ explain("ext3_free_branches",3,"Unlinking file on EXT3");
+ explain("ext3_get_branch",3,"Reading EXT3 indirect blocks");
+ explain("ext3_mark_inode_dirty ",3,"EXT3 marking inode dirty");
+ explain("ext3_mkdir",3,"EXT3: Creating a directory");
+ explain("ext3_orphan_add ",3,"EXT3 adding orphan");
+ explain("ext3_read_inode",3,"Reading EXT3 inode");
+ explain("ext3_readdir",3,"Reading EXT3 directory");
+ explain("ext3_unlink ",3,"EXT3 unlinking file");
+ explain("filemap_fault",5,"Page fault");
+ explain("filp_close",3,"Closing a file");
+ explain("generic_delete_inode",3,"Deleting an inode");
+ explain("generic_make_request",3,"Creating block layer request");
+ explain("get_request_wait",3,"Creating block layer request");
+ explain("handle_mm_fault",5,"Page fault");
+ explain("htree_dirblock_to_tree",3,"Reading EXT3 directory htree");
+ explain("i915_gem_throttle_ioctl",3,"Throttling GPU while waiting for commands");
+ explain("i915_irq_wait",3,"Waiting for GPU interrupt");
+ explain("i915_wait_request",2,"Waiting for GPU command to complete");
+ explain("inet_sendmsg",3,"Sending TCP/IP data");
+ explain("inotify_inode_queue_event",3,"Inotify event");
+ explain("input_close_device",3,"Closing input device");
+ explain("journal_commit_transaction",3,"EXT3: committing transaction");
+ explain("journal_get_undo_access",3,"Waiting for EXT3 journal undo operation");
+ explain("journal_get_write_access",3,"EXT3: Waiting for journal access");
+ explain("kauditd_thread",2,"kernel audit daemon");
+ explain("khugepaged",2,"khugepaged() kernel thread");
+ explain("kjournald",2,"kjournald() kernel thread");
+ explain("kjournald2",2,"jdb2() kernel thread");
+ explain("kmsg_read",3,"Reading from dmesg");
+ explain("ksoftirqd",2,"Waking ksoftirqd");
+ explain("kswapd",2,"kswapd() kernel thread");
+ explain("kthreadd",2,"kthreadd kernel thread");
+ explain("kvm_vcpu_ioctl",3,"KVM ioctl");
+ explain("link_path_walk",3,"Following symlink");
+ explain("lock_kernel",3,"Big Kernel Lock contention");
+ explain("lock_super",1,"Superblock lock contention");
+ explain("log_do_checkpoint",3,"EXT3 journal checkpoint");
+ explain("lookup_create",3,"Creating file");
+ explain("md_thread",2,"Raid resync kernel thread");
+ explain("migration_thread",2,"migration() kernel thread");
+ explain("mousedev_close_device",3,"Closing mouse device");
+ explain("mousedev_open",3,"Opening mouse device");
+ explain("mousedev_release",3,"Closing mouse device");
+ explain("page_cache_sync_readahead",3,"Pagecache sync readahead");
+ explain("path_walk",3,"Walking directory tree");
+ explain("pdflush",2,"pdflush() kernel thread");
+ explain("pipe_read",3,"Reading from a pipe");
+ explain("pipe_wait",3,"Waiting for pipe data");
+ explain("pipe_write",3,"Writing to a pipe");
+ explain("proc_delete_inode",3,"Removing /proc file");
+ explain("proc_lookup",3,"Looking up /proc file");
+ explain("proc_reg_read",2,"Reading from /proc file");
+ explain("proc_root_readdir",2,"Reading /proc directory");
+ explain("rcu_gp_kthread",2,"RCU grace period kernel thread");
+ explain("read_block_bitmap",3,"Reading EXT3 block bitmaps");
+ explain("request_module",2,"Loading a kernel module");
+ explain("run_ksoftirqd",2,"Waking ksoftirqd");
+ explain("scsi_cmd_ioctl",3,"SCSI ioctl command");
+ explain("scsi_error_handler",2,"SCSI error handler");
+ explain("scsi_execute_req",3,"Executing raw SCSI command");
+ explain("sd_ioctl",3,"SCSI disk ioctl");
+ explain("shrink_icache_memory",3,"reducing inode cache memory footprint");
+ explain("smpboot_thread_fn",2,"percpu hotplug kernel thread");
+ explain("sock_sendmsg",2,"Sending data over socket");
+ explain("sr_cd_check",3,"Checking CDROM media present");
+ explain("sr_do_ioctl",3,"SCSI cdrom ioctl");
+ explain("sr_media_change",3,"Checking for media change");
+ explain("sync_buffer",3,"Writing buffer to disk (synchronous)");
+ explain("sync_filesystems",5,"Syncing filesystem");
+ explain("sync_inode",3,"(f)syncing an inode to disk");
+ explain("sync_page",3,"Writing a page to disk");
+ explain("sync_sb_inodes",3,"Syncing inodes");
+ explain("synchronize_rcu",3,"Waiting for RCU");
+ explain("sys_epoll_wait",3,"Waiting for event (epoll)");
+ explain("sys_execve",3,"Executing a program");
+ explain("sys_fcntl",2,"FCNTL system call");
+ explain("sys_flock",3,"flock() on a file");
+ explain("sys_futex",3,"Userspace lock contention");
+ explain("sys_getdents",3,"Reading directory content");
+ explain("sys_mkdirat",3,"Creating directory");
+ explain("sys_mmap",3,"mmaping memory");
+ explain("sys_mprotect",3,"mprotect() system call");
+ explain("sys_munmap",3,"unmapping memory");
+ explain("sys_nanosleep",5,"Application requested delay");
+ explain("sys_pause",5,"Application requested delay");
+ explain("sys_wait4",3,"Waiting for a process to die");
+ explain("tcp_connect",3,"TCP/IP connect");
+ explain("tcp_recvmsg",3,"Receiving TCP/IP data");
+ explain("tty_ioctl",2,"TTY IOCTL");
+ explain("tty_poll",3,"Waiting for TTY data");
+ explain("tty_read",3,"Waiting for TTY input");
+ explain("tty_wait_until_sent",3,"Waiting for TTY to finish sending");
+ explain("tty_write",3,"Writing data to TTY");
+ explain("udp_recvmsg",3,"Receiving UDP/IP data");
+ explain("unix_stream_recvmsg",3,"Waiting for data on unix socket");
+ explain("update_atime",3,"Updating inode atime");
+ explain("usb_autoresume_device",2,"Waking up USB device");
+ explain("usb_port_resume",2,"Waking up USB device");
+ explain("usb_stor_control_thread",2,"usb storage control kernel thread");
+ explain("usbdev_open",3,"opening USB device");
+ explain("vfs_create",1,"Creating a file");
+ explain("vfs_read",1,"Reading from file");
+ explain("vfs_lock_file",1,"Locking a file");
+ explain("vfs_readdir",1,"Reading directory content");
+ explain("vfs_rmdir",3,"Removing directory");
+ explain("vfs_stat_fd",3,"stat() operation");
+ explain("vfs_unlink",1,"Unlinking file");
+ explain("vfs_write",1,"Writing to file");
+ explain("vt_waitactive",3,"vt_waitactive IOCTL");
+ explain("worker_thread",2,"kernel workqueue thread");
+ explain("writeback_inodes",3,"Writing back inodes");
}
git://sourceware.org / systemtap.git / commitdiff