head 1.1; branch 1.1.1; access; symbols netbsd-11-0-RC4:1.1.1.1 netbsd-11-0-RC3:1.1.1.1 netbsd-11-0-RC2:1.1.1.1 netbsd-11-0-RC1:1.1.1.1 perseant-exfatfs-base-20250801:1.1.1.1 netbsd-11:1.1.1.1.0.30 netbsd-11-base:1.1.1.1 netbsd-10-1-RELEASE:1.1.1.1 perseant-exfatfs-base-20240630:1.1.1.1 perseant-exfatfs:1.1.1.1.0.28 perseant-exfatfs-base:1.1.1.1 netbsd-8-3-RELEASE:1.1.1.1 netbsd-9-4-RELEASE:1.1.1.1 netbsd-10-0-RELEASE:1.1.1.1 netbsd-10-0-RC6:1.1.1.1 netbsd-10-0-RC5:1.1.1.1 netbsd-10-0-RC4:1.1.1.1 netbsd-10-0-RC3:1.1.1.1 netbsd-10-0-RC2:1.1.1.1 netbsd-10-0-RC1:1.1.1.1 netbsd-10:1.1.1.1.0.26 netbsd-10-base:1.1.1.1 netbsd-9-3-RELEASE:1.1.1.1 cjep_sun2x-base1:1.1.1.1 cjep_sun2x:1.1.1.1.0.24 cjep_sun2x-base:1.1.1.1 cjep_staticlib_x-base1:1.1.1.1 netbsd-9-2-RELEASE:1.1.1.1 cjep_staticlib_x:1.1.1.1.0.22 cjep_staticlib_x-base:1.1.1.1 netbsd-9-1-RELEASE:1.1.1.1 phil-wifi-20200421:1.1.1.1 phil-wifi-20200411:1.1.1.1 is-mlppp:1.1.1.1.0.20 is-mlppp-base:1.1.1.1 phil-wifi-20200406:1.1.1.1 netbsd-8-2-RELEASE:1.1.1.1 netbsd-9-0-RELEASE:1.1.1.1 netbsd-9-0-RC2:1.1.1.1 netbsd-9-0-RC1:1.1.1.1 phil-wifi-20191119:1.1.1.1 netbsd-9:1.1.1.1.0.18 netbsd-9-base:1.1.1.1 phil-wifi-20190609:1.1.1.1 netbsd-8-1-RELEASE:1.1.1.1 netbsd-8-1-RC1:1.1.1.1 pgoyette-compat-merge-20190127:1.1.1.1 pgoyette-compat-20190127:1.1.1.1 pgoyette-compat-20190118:1.1.1.1 pgoyette-compat-1226:1.1.1.1 pgoyette-compat-1126:1.1.1.1 pgoyette-compat-1020:1.1.1.1 pgoyette-compat-0930:1.1.1.1 pgoyette-compat-0906:1.1.1.1 pgoyette-compat-0728:1.1.1.1 netbsd-8-0-RELEASE:1.1.1.1 phil-wifi:1.1.1.1.0.16 phil-wifi-base:1.1.1.1 pgoyette-compat-0625:1.1.1.1 netbsd-8-0-RC2:1.1.1.1 pgoyette-compat-0521:1.1.1.1 pgoyette-compat-0502:1.1.1.1 pgoyette-compat-0422:1.1.1.1 netbsd-8-0-RC1:1.1.1.1 pgoyette-compat-0415:1.1.1.1 pgoyette-compat-0407:1.1.1.1 pgoyette-compat-0330:1.1.1.1 pgoyette-compat-0322:1.1.1.1 pgoyette-compat-0315:1.1.1.1 pgoyette-compat:1.1.1.1.0.14 pgoyette-compat-base:1.1.1.1 matt-nb8-mediatek:1.1.1.1.0.12 matt-nb8-mediatek-base:1.1.1.1 perseant-stdc-iso10646:1.1.1.1.0.10 perseant-stdc-iso10646-base:1.1.1.1 netbsd-8:1.1.1.1.0.8 netbsd-8-base:1.1.1.1 prg-localcount2-base3:1.1.1.1 prg-localcount2-base2:1.1.1.1 prg-localcount2-base1:1.1.1.1 prg-localcount2:1.1.1.1.0.6 prg-localcount2-base:1.1.1.1 pgoyette-localcount-20170426:1.1.1.1 bouyer-socketcan-base1:1.1.1.1 pgoyette-localcount-20170320:1.1.1.1 bouyer-socketcan:1.1.1.1.0.4 bouyer-socketcan-base:1.1.1.1 pgoyette-localcount-20170107:1.1.1.1 pgoyette-localcount-20161104:1.1.1.1 localcount-20160914:1.1.1.1 pgoyette-localcount-20160806:1.1.1.1 pgoyette-localcount-20160726:1.1.1.1 pgoyette-localcount:1.1.1.1.0.2 pgoyette-localcount-base:1.1.1.1 dtracetoolkit-2015-09-29:1.1.1.1 FreeBSD:1.1.1; locks; strict; comment @# @; 1.1 date 2015.09.30.22.01.08; author christos; state Exp; branches 1.1.1.1; next ; commitid d9nN99160jbCfkDy; 1.1.1.1 date 2015.09.30.22.01.08; author christos; state Exp; branches; next ; commitid d9nN99160jbCfkDy; desc @@ 1.1 log @Initial revision @ text @In this example, bitesize.d was run for several seconds then Ctrl-C was hit. As bitesize.d runs it records how processes on the system are accessing the disks - in particular the size of the I/O operation. It is usually desirable for processes to be requesting large I/O operations rather than taking many small "bites". The final report highlights how processes performed. The find command mostly read 1K blocks while the tar command was reading large blocks - both as expected. # bitesize.d Tracing... Hit Ctrl-C to end. ^C PID CMD 7110 -bash\0 value ------------- Distribution ------------- count 512 | 0 1024 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 2 2048 | 0 4096 |@@@@@@@@@@@@@@@@@@@@@@@@@@ 1 8192 | 0 7110 sync\0 value ------------- Distribution ------------- count 512 | 0 1024 |@@@@@@@@@@ 1 2048 |@@@@@@@@@@@@@@@@@@@@ 2 4096 | 0 8192 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 5 16384 | 0 0 sched\0 value ------------- Distribution ------------- count 1024 | 0 2048 |@@@@@@ 1 4096 | 0 8192 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 10 16384 | 0 7109 find /\0 value ------------- Distribution ------------- count 512 | 0 1024 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 1452 2048 |@@@@ 91 4096 | 33 8192 |@@@@ 97 16384 | 0 3 fsflush\0 value ------------- Distribution ------------- count 4096 | 0 8192 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 449 16384 | 0 7108 tar cf /dev/null /\0 value ------------- Distribution ------------- count 256 | 0 512 | 70 1024 |@@@@@@@@@@@@@@@@@@@@ 1306 2048 |@@@@@@@@ 569 4096 |@@@@@@@@@@@@@@@@@@ 1286 8192 |@@@@@@@@@@@@@@@@@@@@ 1403 16384 |@@ 190 32768 |@@@@@@ 396 65536 | 0 @ 1.1.1.1 log @Import the dtrace toolkit from FreeBSD; simple scripts such as dtruss work unmodified. For others we'll need to add the missing probes and adjust. This is not attached to the build. @ text @@