IRIX Base Documentation 2002 November

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Text File | 2002-10-03 | 16.4 KB | 331 lines

oooossssvvvviiiieeeewwww((((1111)))) oooossssvvvviiiieeeewwww((((1111)))) NNNNAAAAMMMMEEEE osview - monitor operating system activity data SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS oooossssvvvviiiieeeewwww [[[[----iiiin]]]] [[[[----nnnnn]]]] [[[[----ssss]]]] [[[[----aaaa]]]] [[[[----cccc]]]] DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN _o_s_v_i_e_w monitors various portions of the activity of the operating system and displays them using the full screen capabilities of the current terminal. A large number of activity counters are monitored, and the display may be dynamically altered to hide or show only those counters in which the user is interested. The default is no longer to display all the statistics initially, instead there is a selection menu at the bottom of the display; enter the number of the selection to switch displays. See the _----_aaaa option for the older behavior. It is assumed that the _o_s_v_i_e_w user is somewhat familiar with the internal workings of an AT&T V.4 based kernel. _o_s_v_i_e_w lays out as much information as possible in the screen area available. Each data item is grouped similarly to the grouping shown by _s_a_r(_1). A header line gives the group name, and members of the group are indented below along with the one-second average value over the last interval (or total value over the interval; see below). If a graphics subsystem is not present on the machine being monitored, _o_s_v_i_e_w suppresses all graphics related statistics in the display. The ----iiii parameter sets the delay between screen updates in seconds. By default, a 5 second rate is used. The ----nnnn parameter is used to override the default number of lines to use, which is usually the entire size of the display area. This can be useful if the display is called up in a long window, to keep the counters grouped together at the top of the window. The ----ssss option informs _o_s_v_i_e_w to not reduce relevant values to the average over a second. One second averaging allows instant performance estimates, but may show inaccuracies because of the short interval involved. The ----aaaa option gives behavior like the older versions, with all possible statistics displayed at once (the same as the 0000 option on the selection line, if this option isn't given. The ----cccc option causes a running count to be displayed, rather than an interval count. The counts can be reset to zero by pressing the CCCC key. In general, those parameters dealing with data throughput rather than events are presented as the number of bytes involved. For instance, memory usage is reported in bytes, as well as buffer cache traffic. Those parameters dealing with events to the system, such as page fault activity, interrupts or system activity are reported as actual counts. This allows an instant estimate of the activity and throughput of the system. A group can be suppressed along with all its members to allow hidden groups to be brought into view if the screen area is too small. This is done by moving the cursor over the header line of the group to suppress PPPPaaaaggggeeee 1111 oooossssvvvviiiieeeewwww((((1111)))) oooossssvvvviiiieeeewwww((((1111)))) and typing a suppression character. The cursor may be positioned in any of the standard ways; keyboard arrow keys, the h-j-k-l keys, or the backspace-return-tab keys. _o_s_v_i_e_w highlights the line the cursor is on unless the cursor is on the top screen line (which is reserved for status information). When positioned over a group name, typing the DDDD character or one of the _d_e_l_e_t_e keys on the keyboard will suppress the group. The group name will remain, with an asterisk (*) prefix to indicate that the group has been suppressed. The group may be expanded again by positioning the cursor over the group name and typing the IIII character or one of the _i_n_s_e_r_t keys on the keyboard. The _h_o_m_e key moves the cursor to the _o_s_v_i_e_w status line. OOOOVVVVEEEERRRRVVVVIIIIEEEEWWWW The information which _o_s_v_i_e_w displays and how to interpret it is given below. See the documentation for _s_a_r(_1) or _g_r__o_s_v_i_e_w(_1) for additional information. Some headers, including _S_w_a_p, and _I_n_t_e_r_r_u_p_t_s are suppressed by default. See above description of how to get them to display. Some headers, including _P_a_t_h_N_a_m_e _C_a_c_h_e, _E_f_s_A_c_t, and _G_e_t_b_l_k contain information that is subject to change and is of use primarily by IRIX development groups. Tiles information is only displayed if the kernel supports that feature. Load Average These counters give load average over the last minute, 5 minutes and 15 minutes. CPU Usage These counters display the proportion of the available processor cycles which were used by each of the following activities. If multiple processors are present, then the CPU number will be added to the header line. uuuusssseeeerrrr - user programs ssssyyyyssss - system on behalf of user iiiinnnnttttrrrr - interrupt handling ggggffffxxxxcccc - graphics context switching ggggffffxxxxffff - waiting on graphics input FIFO ssssxxxxbbbbrrrrkkkk - waiting for memory iiiiddddlllleeee - doing nothing Wait Ratio These counters display the proportion of time no processes were available to run, and any processes were waiting for I/O to complete. %%%%IIIIOOOO - waiting on IO %%%%SSSSwwwwaaaapppp - waiting on swap IO %%%%PPPPhhhhyyyyssssiiiioooo - waiting on physical IO System Memory PPPPhhhhyyyyssss - physical memory size kkkkeeeerrrrnnnneeeellll - memory consumed by kernel text and data PPPPaaaaggggeeee 2222 oooossssvvvviiiieeeewwww((((1111)))) oooossssvvvviiiieeeewwww((((1111)))) hhhheeeeaaaapppp - part of kernel used by heap ssssttttrrrreeeeaaaammmm - part of heap used by streams zzzzoooonnnneeee - part of kernel used by zone allocator ppppttttbbbbllll - part of kernel used by process page tables ffffssss ccccttttllll - memory holding filesystem meta-data ffffssss ddddaaaattttaaaa - memory holding filesystem file data ddddeeeellllwwwwrrrriiii - modified filesystem file data ffffrrrreeeeeeee - memory not in use uuuusssseeeerrrrddddaaaattttaaaa - in use holding valid user data ppppggggaaaalllllllloooocccc - physical pages allocated from free pool System Activity ssssyyyyssssccccaaaallllllll - system calls rrrreeeeaaaadddd - read system calls wwwwrrrriiiitttteeee - write system calls ffffoooorrrrkkkk - fork system calls eeeexxxxeeeecccc - exec system calls rrrreeeeaaaaddddcccchhhh - characters read via read() wwwwrrrriiiitttteeeecccchhhh - characters written via write() iiiiggggeeeetttt - efs inode searches Block Devices llllrrrreeeeaaaadddd - amount of logical buffer reads bbbbrrrreeeeaaaadddd - amount of physical buffer reads %%%%rrrrccccaaaacccchhhheeee - read hit ratio on buffer cache llllwwwwrrrriiiitttteeee - amount of logical buffer writes bbbbwwwwrrrriiiitttteeee - amount of physical buffer writes wwwwccccaaaannnncccceeeellll - amount of delayed writes cancelled %%%%wwwwccccaaaacccchhhheeee - write hit ratio; negative for write-behind pppphhhhrrrreeeeaaaadddd - amount of raw physical reads pppphhhhwwwwrrrriiiitttteeee - amount of raw physical writes Swap ffffrrrreeeeeeeesssswwwwaaaapppp - amount of free physical swap vvvvsssswwwwaaaapppp - amount of free virtual swap sssswwwwaaaappppiiiinnnn - page swapins sssswwwwaaaappppoooouuuutttt - page swapouts bbbbsssswwwwaaaappppiiiinnnn - bytes swapped in bbbbsssswwwwaaaappppoooouuuutttt - bytes swapped out System VM DDDDyyyynnnnaaaammmmiiiicccc VVVVMMMM - total dynamic system VM aaaavvvvaaaaiiiillll - system VM available iiiinnnn uuuusssseeee - system VM in use ffffssss ddddaaaattttaaaa - in use by FS buffer cache aaaallllllllooooccccssss - pages of system VM allocated ffffrrrreeeeeeeessss - pages of system VM freed PPPPaaaaggggeeee 3333 oooossssvvvviiiieeeewwww((((1111)))) oooossssvvvviiiieeeewwww((((1111)))) Memory Faults vvvvffffaaaauuuulllltttt - page faults ppppffffaaaauuuulllltttt - protection faults ddddeeeemmmmaaaannnndddd - demand zero and demand fill faults ccccwwww - copy-on write faults sssstttteeeeaaaallll - page steals oooonnnnsssswwwwaaaapppp - page found on swap oooonnnnccccaaaacccchhhheeee - page found in page cache oooonnnnffffiiiilllleeee - page read from file ffffrrrreeeeeeeedddd - pages freed by paging daemon uuuunnnnmmmmooooddddsssswwwwaaaapppp - clean swap page, dirty incore page uuuunnnnmmmmooooddddffffiiiilllleeee - clean file page, dirty incore page iiiicccclllleeeeaaaannnn - number of icache cleans TLB Actions nnnneeeewwwwppppiiiidddd - new process ID allocated ttttffffaaaauuuulllltttt - second level TLB misses rrrrffffaaaauuuulllltttt - reference faults (during paging) fffflllluuuusssshhhh - flush of entire TLB ssssyyyynnnncccc - cross-processor TLB synchronizations Graphics ggggrrrriiiiiiiiooooccccttttllll - graphics ioctl's ggggiiiinnnnttttrrrr - graphics interrupts sssswwwwaaaappppbbbbuuuuffff - swapbuffer completes sssswwwwiiiittttcccchhhh - context switches ffffiiiiffffoooowwwwaaaaiiiitttt - wait on FIFO ffffiiiiffffoooonnnnwwwwaaaaiiiitttt - wait on FIFO, below low-water mark on check Tiles ttttaaaavvvvaaaaiiiillll - tiles available, no locked pages aaaavvvvffffrrrreeeeeeee - free pages in available tiles ttttffffrrrraaaagggg - tiles fragmented with locked pages ffffrrrraaaagggglllloooocccckkkk - locked pages within tfrags ffffrrrraaaaggggffffrrrreeeeeeee - free pages within tfrags ttttffffuuuullllllll - tiles full, all pages locked ttttttttiiiilllleeee - tiles allocated ppppgggglllloooocccckkkkssss - tile page locks ttttaaaallllllllooooccccmmmmvvvv - pages relocated for tile_alloc ttttiiiilllleeeeddddmmmmvvvv - pages relocated by tiled daemon TCP ccccoooonnnnnnnnssss - connections accepted ssssnnnnddddttttoooottttaaaallll - packets sent rrrrccccvvvvttttoooottttaaaallll - packets received ssssnnnnddddbbbbyyyytttteeee - bytes sent rrrrccccvvvvbbbbyyyytttteeee - bytes received PPPPaaaaggggeeee 4444 oooossssvvvviiiieeeewwww((((1111)))) oooossssvvvviiiieeeewwww((((1111)))) UDP iiiippppaaaacccckkkkeeeettttssss - packets received ooooppppaaaacccckkkkeeeettttssss - packets sent ddddrrrrooooppppppppeeeedddd - packets dropped eeeerrrrrrrroooorrrrssss - input errors IP iiiippppaaaacccckkkkeeeettttssss - packets received ooooppppaaaacccckkkkeeeettttssss - packets sent ffffoooorrrrwwwwaaaarrrrdddd - packets forwarded ddddrrrrooooppppppppeeeedddd - output errors eeeerrrrrrrroooorrrrssss - input errors NetIF These counters display the activity on a particular network interface. If multiple interfaces are present, than a separate set of counters is displayed for each interface. The interface name is displayed as part of the header. IIIIppppaaaacccckkkkeeeettttssss - packets received OOOOppppaaaacccckkkkeeeettttssss - packets transmitted IIIIeeeerrrrrrrroooorrrrssss - packets received in error OOOOeeeerrrrrrrroooorrrrssss - errors transmitting a packet ccccoooolllllllliiiissssiiiioooonnnnssss- collisions detected Scheduler rrrruuuunnnnqqqq - number of processes on run queue sssswwwwaaaappppqqqq - number of processes on swap queue sssswwwwiiiittttcccchhhh - context switches Interrupts aaaallllllll - total interrupts handled vvvvmmmmeeee - VMEBus interrupts SSSSEEEEEEEE AAAALLLLSSSSOOOO _gggg_rrrr______oooo_ssss_vvvv_iiii_eeee_wwww(1), _tttt_oooo_pppp(1), _ssss_aaaa_rrrr(1). BBBBUUUUGGGGSSSS _o_s_v_i_e_w cannot atomically get all the data it needs. On a very busy system, some percentages could sum to greater than 100, since there could be a gap between the time _o_s_v_i_e_w reads the current time and when it reads the data counters. PPPPaaaaggggeeee 5555