BCC - Awọn irinṣẹ Ṣiṣayẹwo Dynamic fun Iboju Iṣẹ iṣe Linux, Nẹtiwọọki ati Diẹ sii
BCC (Gbigba Gbigbapọ BPF) jẹ ipilẹ agbara ti awọn irinṣẹ ti o yẹ ati awọn faili apẹẹrẹ fun ṣiṣẹda wiwa kakiri ekuro ati awọn eto ifọwọyi. O nlo BPF ti o gbooro sii (Awọn Ajọ Ajọ Berkeley Packet), ti a kọkọ mọ ni eBPF eyiti o jẹ ọkan ninu awọn ẹya tuntun ni Linux 3.15.
Ni iṣe, ọpọlọpọ awọn paati ti BCC lo lo nilo Linux 4.1 tabi loke, ati awọn ẹya akiyesi rẹ pẹlu:
- Ko beere fun modulu kernel ẹnikẹta, nitori gbogbo awọn irinṣẹ ṣiṣẹ ti o da lori BPF eyiti a ṣe sinu ekuro ati BCC nlo awọn ẹya ti a fi kun ni Linux 4.x jara.
- Jeki akiyesi ti ipaniyan sọfitiwia.
- Awọn ajọpọ ti awọn irinṣẹ onínọmbà pupọ pẹlu awọn faili apẹẹrẹ ati awọn oju-iwe eniyan.
Ti o dara julọ ti o baamu fun awọn olumulo Lainos ti ilọsiwaju, BCC jẹ ki o rọrun lati kọ awọn eto BPF nipa lilo ohun-elo ekuro ni C, ati awọn opin-iwaju ni Python ati lua. Ni afikun, o ṣe atilẹyin awọn iṣẹ-ṣiṣe lọpọlọpọ gẹgẹbi iṣiro iṣẹ, ibojuwo, iṣakoso ijabọ nẹtiwọọki pẹlu ọpọlọpọ diẹ sii.
Bii O ṣe le Fi BCC sinu Awọn Ẹrọ Lainos
Ranti pe BCC nlo awọn ẹya ti a ṣafikun ninu ẹya ekuro Linux 4.1 tabi loke, ati bi ibeere kan, ekuro yẹ ki o ti ṣajọ pẹlu awọn asia ti a ṣeto ni isalẹ:
CONFIG_BPF=y CONFIG_BPF_SYSCALL=y # [optional, for tc filters] CONFIG_NET_CLS_BPF=m # [optional, for tc actions] CONFIG_NET_ACT_BPF=m CONFIG_BPF_JIT=y CONFIG_HAVE_BPF_JIT=y # [optional, for kprobes] CONFIG_BPF_EVENTS=y
Lati ṣayẹwo awọn asia ekuro rẹ, wo faili /proc/config.gz tabi ṣiṣe awọn aṣẹ bi ninu awọn apẹẹrẹ isalẹ:
[email ~ $ grep CONFIG_BPF= /boot/config-`uname -r` CONFIG_BPF=y [email ~ $ grep CONFIG_BPF_SYSCALL= /boot/config-`uname -r` CONFIG_BPF_SYSCALL=y [email ~ $ grep CONFIG_NET_CLS_BPF= /boot/config-`uname -r` CONFIG_NET_CLS_BPF=m [email ~ $ grep CONFIG_NET_ACT_BPF= /boot/config-`uname -r` CONFIG_NET_ACT_BPF=m [email ~ $ grep CONFIG_BPF_JIT= /boot/config-`uname -r` CONFIG_BPF_JIT=y [email ~ $ grep CONFIG_HAVE_BPF_JIT= /boot/config-`uname -r` CONFIG_HAVE_BPF_JIT=y [email ~ $ grep CONFIG_BPF_EVENTS= /boot/config-`uname -r` CONFIG_BPF_EVENTS=y
Lẹhin ti o ṣayẹwo awọn asia ekuro, o to akoko lati fi awọn irinṣẹ BCC sori ẹrọ ni awọn eto Linux.
Awọn idii alẹ nikan ni a ṣẹda fun Ubuntu 16.04, ṣugbọn awọn itọnisọna fifi sori ẹrọ jẹ taara taara. Ko si iwulo igbesoke ekuro tabi ṣajọ lati orisun.
$ echo "deb [trusted=yes] https://repo.iovisor.org/apt/xenial xenial-nightly main" | sudo tee /etc/apt/sources.list.d/iovisor.list $ sudo apt-get update $ sudo apt-get install bcc-tools
Bẹrẹ nipa fifi ekuro Linux kan 4.3+ sii, lati http://kernel.ubuntu.com/~kernel-ppa/mainline.
Bi apẹẹrẹ, kọ akọọlẹ ikarahun kekere “bcc-install.sh” pẹlu akoonu ti o wa ni isalẹ.
Akiyesi: ṣe imudojuiwọn iye PREFIX si ọjọ tuntun, ati tun lọ kiri lori awọn faili ni URL PREFIX ti a pese lati gba iye REL gangan, rọpo wọn ninu iwe afọwọkọ naa.
#!/bin/bash
VER=4.5.1-040501
PREFIX=http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5.1-wily/
REL=201604121331
wget ${PREFIX}/linux-headers-${VER}-generic_${VER}.${REL}_amd64.deb
wget ${PREFIX}/linux-headers-${VER}_${VER}.${REL}_all.deb
wget ${PREFIX}/linux-image-${VER}-generic_${VER}.${REL}_amd64.deb
sudo dpkg -i linux-*${VER}.${REL}*.deb
Fipamọ faili naa ki o jade. Jẹ ki o ṣiṣẹ, lẹhinna ṣiṣe bi o ti han:
$ chmod +x bcc-install.sh $ sh bcc-install.sh
Lẹhinna, tun atunbere eto rẹ.
$ reboot
Nigbamii, ṣiṣe awọn aṣẹ ni isalẹ lati fi awọn idii BCC ti a fowo sii:
$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys D4284CDD $ echo "deb https://repo.iovisor.org/apt trusty main" | sudo tee /etc/apt/sources.list.d/iovisor.list $ sudo apt-get update $ sudo apt-get install binutils bcc bcc-tools libbcc-examples python-bcc
Fi ekuro 4.2+ sii lati http://alt.fedoraproject.org/pub/alt/rawhide-kernel-nodebug, ti eto rẹ ba ni ẹya ti o kere ju ohun ti o nilo lọ. Ni isalẹ jẹ apẹẹrẹ ti bii o ṣe le ṣe:
$ sudo dnf config-manager --add-repo=http://alt.fedoraproject.org/pub/alt/rawhide-kernel-nodebug/fedora-rawhide-kernel-nodebug.repo $ sudo dnf update $ reboot
Lẹhin eyini, ṣafikun ibi ipamọ awọn irinṣẹ BBC, ṣe imudojuiwọn eto rẹ ki o fi awọn irinṣẹ sii nipa ṣiṣe awọn atẹle awọn ofin atẹle:
$ echo -e '[iovisor]\nbaseurl=https://repo.iovisor.org/yum/nightly/f23/$basearch\nenabled=1\ngpgcheck=0' | sudo tee /etc/yum.repos.d/iovisor.repo $ sudo dnf update $ sudo dnf install bcc-tools
O yẹ ki o bẹrẹ nipa igbesoke ekuro rẹ si o kere ju ẹya 4.3.1-1, lẹhinna fi awọn idii sii ni isalẹ ni lilo eyikeyi awọn alakoso package Arch gẹgẹbi pacaur, yaourt, cower, abbl.
bcc bcc-tools python-bcc python2-bcc
Bii O ṣe le Lo Awọn irinṣẹ BCC ni Awọn Ẹrọ Lainos
Gbogbo awọn irinṣẹ BCC ti fi sii labẹ /usr/share/bcc/irinṣẹ itọsọna. Sibẹsibẹ, o le ni ọna miiran ṣiṣe wọn lati ibi ipamọ Github BCC labẹ /irinṣẹ nibiti wọn pari pẹlu itẹsiwaju .py .
$ ls /usr/share/bcc/tools argdist capable filetop offwaketime stackcount vfscount bashreadline cpudist funccount old stacksnoop vfsstat biolatency dcsnoop funclatency oomkill statsnoop wakeuptime biosnoop dcstat gethostlatency opensnoop syncsnoop xfsdist biotop doc hardirqs pidpersec tcpaccept xfsslower bitesize execsnoop killsnoop profile tcpconnect zfsdist btrfsdist ext4dist mdflush runqlat tcpconnlat zfsslower btrfsslower ext4slower memleak softirqs tcpretrans cachestat filelife mysqld_qslower solisten tplist cachetop fileslower offcputime sslsniff trace
A yoo bo awọn apẹẹrẹ diẹ labẹ - mimojuto gbogbogbo eto Linux ati nẹtiwọọki.
Jẹ ki a bẹrẹ nipa titele gbogbo ṣii() syscalls nipa lilo unlocknoop. Eyi jẹ ki a sọ fun wa bi ọpọlọpọ awọn ohun elo ṣe n ṣiṣẹ nipa idamo awọn faili data wọn, awọn faili atunto ati ọpọlọpọ diẹ sii:
$ cd /usr/share/bcc/tools $ sudo ./opensnoop PID COMM FD ERR PATH 1 systemd 35 0 /proc/self/mountinfo 2797 udisksd 13 0 /proc/self/mountinfo 1 systemd 35 0 /sys/devices/pci0000:00/0000:00:0d.0/ata3/host2/target2:0:0/2:0:0:0/block/sda/sda1/uevent 1 systemd 35 0 /run/udev/data/b8:1 1 systemd -1 2 /etc/systemd/system/sys-kernel-debug-tracing.mount 1 systemd -1 2 /run/systemd/system/sys-kernel-debug-tracing.mount 1 systemd -1 2 /run/systemd/generator/sys-kernel-debug-tracing.mount 1 systemd -1 2 /usr/local/lib/systemd/system/sys-kernel-debug-tracing.mount 2247 systemd 15 0 /proc/self/mountinfo 1 systemd -1 2 /lib/systemd/system/sys-kernel-debug-tracing.mount 1 systemd -1 2 /usr/lib/systemd/system/sys-kernel-debug-tracing.mount 1 systemd -1 2 /run/systemd/generator.late/sys-kernel-debug-tracing.mount 1 systemd -1 2 /etc/systemd/system/sys-kernel-debug-tracing.mount.wants 1 systemd -1 2 /etc/systemd/system/sys-kernel-debug-tracing.mount.requires 1 systemd -1 2 /run/systemd/system/sys-kernel-debug-tracing.mount.wants 1 systemd -1 2 /run/systemd/system/sys-kernel-debug-tracing.mount.requires 1 systemd -1 2 /run/systemd/generator/sys-kernel-debug-tracing.mount.wants 1 systemd -1 2 /run/systemd/generator/sys-kernel-debug-tracing.mount.requires 1 systemd -1 2 /usr/local/lib/systemd/system/sys-kernel-debug-tracing.mount.wants 1 systemd -1 2 /usr/local/lib/systemd/system/sys-kernel-debug-tracing.mount.requires 1 systemd -1 2 /lib/systemd/system/sys-kernel-debug-tracing.mount.wants 1 systemd -1 2 /lib/systemd/system/sys-kernel-debug-tracing.mount.requires 1 systemd -1 2 /usr/lib/systemd/system/sys-kernel-debug-tracing.mount.wants 1 systemd -1 2 /usr/lib/systemd/system/sys-kernel-debug-tracing.mount.requires 1 systemd -1 2 /run/systemd/generator.late/sys-kernel-debug-tracing.mount.wants 1 systemd -1 2 /run/systemd/generator.late/sys-kernel-debug-tracing.mount.requires 1 systemd -1 2 /etc/systemd/system/sys-kernel-debug-tracing.mount.d 1 systemd -1 2 /run/systemd/system/sys-kernel-debug-tracing.mount.d 1 systemd -1 2 /run/systemd/generator/sys-kernel-debug-tracing.mount.d ....
Ninu apẹẹrẹ yii, o fihan pinpin kaakiri ti idaduro I/O disk nipa lilo biolatecncy. Lẹhin ṣiṣe pipaṣẹ naa, duro fun iṣẹju diẹ ki o lu Konturolu-C lati pari ati wo iṣẹjade.
$ sudo ./biolatecncy
Tracing block device I/O... Hit Ctrl-C to end.
^C
usecs : count distribution
0 -> 1 : 0 | |
2 -> 3 : 0 | |
4 -> 7 : 0 | |
8 -> 15 : 0 | |
16 -> 31 : 0 | |
32 -> 63 : 0 | |
64 -> 127 : 0 | |
128 -> 255 : 3 |****************************************|
256 -> 511 : 3 |****************************************|
512 -> 1023 : 1 |************* |
Ni apakan yii, a yoo lọ si wiwa awọn ilana tuntun ni ipaniyan nipa lilo ohun elo execsnoop. Nigbakugba ti ilana kan ba jẹ titiipa nipasẹ orita() ati exec() syscalls, o han ninu iṣẹjade. Sibẹsibẹ, kii ṣe gbogbo awọn ilana ni o gba.
$ sudo ./execsnoop PCOMM PID PPID RET ARGS gnome-screensho 14882 14881 0 /usr/bin/gnome-screenshot --gapplication-service systemd-hostnam 14892 1 0 /lib/systemd/systemd-hostnamed nautilus 14897 2767 -2 /home/tecmint/bin/net usershare info nautilus 14897 2767 -2 /home/tecmint/.local/bin/net usershare info nautilus 14897 2767 -2 /usr/local/sbin/net usershare info nautilus 14897 2767 -2 /usr/local/bin/net usershare info nautilus 14897 2767 -2 /usr/sbin/net usershare info nautilus 14897 2767 -2 /usr/bin/net usershare info nautilus 14897 2767 -2 /sbin/net usershare info nautilus 14897 2767 -2 /bin/net usershare info nautilus 14897 2767 -2 /usr/games/net usershare info nautilus 14897 2767 -2 /usr/local/games/net usershare info nautilus 14897 2767 -2 /snap/bin/net usershare info compiz 14899 14898 -2 /home/tecmint/bin/libreoffice --calc compiz 14899 14898 -2 /home/tecmint/.local/bin/libreoffice --calc compiz 14899 14898 -2 /usr/local/sbin/libreoffice --calc compiz 14899 14898 -2 /usr/local/bin/libreoffice --calc compiz 14899 14898 -2 /usr/sbin/libreoffice --calc libreoffice 14899 2252 0 /usr/bin/libreoffice --calc dirname 14902 14899 0 /usr/bin/dirname /usr/bin/libreoffice basename 14903 14899 0 /usr/bin/basename /usr/bin/libreoffice ...
Lilo ext4slower lati wa kakiri awọn iṣẹ faili faili ext4 wọpọ ti o lọra ju 10ms, lati ṣe iranlọwọ fun wa idanimọ ominira Fa fifalẹ I/O nipasẹ eto faili.
O n ṣe awọn iṣẹ ṣiṣe wọnyẹn ti o kọja ẹnu-ọna nikan:
$ sudo ./execslower Tracing ext4 operations slower than 10 ms TIME COMM PID T BYTES OFF_KB LAT(ms) FILENAME 11:59:13 upstart 2252 W 48 1 10.76 dbus.log 11:59:13 gnome-screensh 14993 R 144 0 10.96 settings.ini 11:59:13 gnome-screensh 14993 R 28 0 16.02 gtk.css 11:59:13 gnome-screensh 14993 R 3389 0 18.32 gtk-main.css 11:59:25 rs:main Q:Reg 1826 W 156 60 31.85 syslog 11:59:25 pool 15002 R 208 0 14.98 .xsession-errors 11:59:25 pool 15002 R 644 0 12.28 .ICEauthority 11:59:25 pool 15002 R 220 0 13.38 .bash_logout 11:59:27 dconf-service 2599 S 0 0 22.75 user.BHDKOY 11:59:33 compiz 2548 R 4096 0 19.03 firefox.desktop 11:59:34 compiz 15008 R 128 0 27.52 firefox.sh 11:59:34 firefox 15008 R 128 0 36.48 firefox 11:59:34 zeitgeist-daem 2988 S 0 0 62.23 activity.sqlite-wal 11:59:34 zeitgeist-fts 2996 R 8192 40 15.67 postlist.DB 11:59:34 firefox 15008 R 140 0 18.05 dependentlibs.list 11:59:34 zeitgeist-fts 2996 S 0 0 25.96 position.tmp 11:59:34 firefox 15008 R 4096 0 10.67 libplc4.so 11:59:34 zeitgeist-fts 2996 S 0 0 11.29 termlist.tmp ...
Ni atẹle, jẹ ki a ṣafọ sinu titẹ ila kan fun I/O ni iṣẹju-aaya kọọkan, pẹlu awọn alaye gẹgẹbi ID ilana, eka, awọn baiti, lairi laarin awọn miiran nipa lilo biosnoop:
$ sudo ./biosnoop TIME(s) COMM PID DISK T SECTOR BYTES LAT(ms) 0.000000000 ? 0 R -1 8 0.26 2.047897000 ? 0 R -1 8 0.21 3.280028000 kworker/u4:0 14871 sda W 30552896 4096 0.24 3.280271000 jbd2/sda1-8 545 sda W 29757720 12288 0.40 3.298318000 jbd2/sda1-8 545 sda W 29757744 4096 0.14 4.096084000 ? 0 R -1 8 0.27 6.143977000 ? 0 R -1 8 0.27 8.192006000 ? 0 R -1 8 0.26 8.303938000 kworker/u4:2 15084 sda W 12586584 4096 0.14 8.303965000 kworker/u4:2 15084 sda W 25174736 4096 0.14 10.239961000 ? 0 R -1 8 0.26 12.292057000 ? 0 R -1 8 0.20 14.335990000 ? 0 R -1 8 0.26 16.383798000 ? 0 R -1 8 0.17 ...
Lẹhinna, a tẹsiwaju si lilo cachestat lati ṣe afihan ila kan ti awọn iṣiro atokọ lati kaṣe eto ni gbogbo igba keji. Eyi n jẹ ki o ṣiṣẹ fun awọn iṣẹ tuning eto nipa titọka ipin lu kaṣe kekere ati iwọn giga ti awọn padanu:
$ sudo ./cachestat
HITS MISSES DIRTIES READ_HIT% WRITE_HIT% BUFFERS_MB CACHED_MB
0 0 0 0.0% 0.0% 19 544
4 4 2 25.0% 25.0% 19 544
1321 33 4 97.3% 2.3% 19 545
7476 0 2 100.0% 0.0% 19 545
6228 15 2 99.7% 0.2% 19 545
0 0 0 0.0% 0.0% 19 545
7391 253 108 95.3% 2.7% 19 545
33608 5382 28 86.1% 13.8% 19 567
25098 37 36 99.7% 0.0% 19 566
17624 239 416 96.3% 0.5% 19 520
...
Mimojuto awọn isopọ TCP ni gbogbo iṣẹju keji nipa lilo tcpconnect. Ijade rẹ pẹlu orisun ati adirẹsi adirẹsi, ati nọmba ibudo. Ọpa yii wulo fun wiwa awọn isopọ TCP airotẹlẹ, nitorinaa ṣe iranlọwọ fun wa lati ṣe idanimọ awọn ailagbara ninu awọn atunto ohun elo tabi ikọlu kan.
$ sudo ./tcpconnect PID COMM IP SADDR DADDR DPORT 15272 Socket Threa 4 10.0.2.15 91.189.89.240 80 15272 Socket Threa 4 10.0.2.15 216.58.199.142 443 15272 Socket Threa 4 10.0.2.15 216.58.199.142 80 15272 Socket Threa 4 10.0.2.15 216.58.199.174 443 15272 Socket Threa 4 10.0.2.15 54.200.62.216 443 15272 Socket Threa 4 10.0.2.15 54.200.62.216 443 15272 Socket Threa 4 10.0.2.15 117.18.237.29 80 15272 Socket Threa 4 10.0.2.15 216.58.199.142 80 15272 Socket Threa 4 10.0.2.15 216.58.199.131 80 15272 Socket Threa 4 10.0.2.15 216.58.199.131 443 15272 Socket Threa 4 10.0.2.15 52.222.135.52 443 15272 Socket Threa 4 10.0.2.15 216.58.199.131 443 15272 Socket Threa 4 10.0.2.15 54.200.62.216 443 15272 Socket Threa 4 10.0.2.15 54.200.62.216 443 15272 Socket Threa 4 10.0.2.15 216.58.199.132 443 15272 Socket Threa 4 10.0.2.15 216.58.199.131 443 15272 Socket Threa 4 10.0.2.15 216.58.199.142 443 15272 Socket Threa 4 10.0.2.15 54.69.17.198 443 15272 Socket Threa 4 10.0.2.15 54.69.17.198 443 ...
Gbogbo awọn irinṣẹ ti o wa loke tun le ṣee lo pẹlu awọn aṣayan pupọ, lati jẹki oju-iwe iranlọwọ fun ohun elo ti a fun, ṣe lilo aṣayan -h , fun apẹẹrẹ:
$ sudo ./tcpconnect -h
usage: tcpconnect [-h] [-t] [-p PID] [-P PORT]
Trace TCP connects
optional arguments:
-h, --help show this help message and exit
-t, --timestamp include timestamp on output
-p PID, --pid PID trace this PID only
-P PORT, --port PORT comma-separated list of destination ports to trace.
examples:
./tcpconnect # trace all TCP connect()s
./tcpconnect -t # include timestamps
./tcpconnect -p 181 # only trace PID 181
./tcpconnect -P 80 # only trace port 80
./tcpconnect -P 80,81 # only trace port 80 and 81
Lati wa kakiri awọn ibi-ibi-nla sys ti o kuna, lo aṣayan -x pẹlu opennoop bi isalẹ:
$ sudo ./opensnoop -x PID COMM FD ERR PATH 15414 pool -1 2 /home/.hidden 15415 (ostnamed) -1 2 /sys/fs/cgroup/cpu/system.slice/systemd-hostnamed.service/cgroup.procs 15415 (ostnamed) -1 2 /sys/fs/cgroup/cpu/system.slice/cgroup.procs 15415 (ostnamed) -1 2 /sys/fs/cgroup/cpuacct/system.slice/systemd-hostnamed.service/cgroup.procs 15415 (ostnamed) -1 2 /sys/fs/cgroup/cpuacct/system.slice/cgroup.procs 15415 (ostnamed) -1 2 /sys/fs/cgroup/blkio/system.slice/systemd-hostnamed.service/cgroup.procs 15415 (ostnamed) -1 2 /sys/fs/cgroup/blkio/system.slice/cgroup.procs 15415 (ostnamed) -1 2 /sys/fs/cgroup/memory/system.slice/systemd-hostnamed.service/cgroup.procs 15415 (ostnamed) -1 2 /sys/fs/cgroup/memory/system.slice/cgroup.procs 15415 (ostnamed) -1 2 /sys/fs/cgroup/pids/system.slice/systemd-hostnamed.service/cgroup.procs 2548 compiz -1 2 15416 systemd-cgroups -1 2 /run/systemd/container 15416 systemd-cgroups -1 2 /sys/fs/kdbus/0-system/bus 15415 systemd-hostnam -1 2 /run/systemd/container 15415 systemd-hostnam -1 13 /proc/1/environ 15415 systemd-hostnam -1 2 /sys/fs/kdbus/0-system/bus 1695 dbus-daemon -1 2 /run/systemd/users/0 15415 systemd-hostnam -1 2 /etc/machine-info 15414 pool -1 2 /home/tecmint/.hidden 15414 pool -1 2 /home/tecmint/Binary/.hidden 2599 dconf-service -1 2 /run/user/1000/dconf/user ...
Apẹẹrẹ ti o kẹhin ni isalẹ ṣe afihan bi a ṣe le ṣe iṣiṣẹ kakiri aṣa. A n ṣe awari ilana kan pato nipa lilo PID rẹ.
Akọkọ pinnu ID ilana:
$ pidof firefox 15437
Nigbamii, ṣiṣe aṣẹ itọpa aṣa. Ninu aṣẹ ti o wa ni isalẹ: -p ṣe afihan ID ilana, do_sys_open() jẹ iṣẹ ekuro kan ti o wa kakiri ni agbara pẹlu ariyanjiyan keji rẹ bi okun.
$ sudo ./trace -p 4095 'do_sys_open "%s", arg2' TIME PID COMM FUNC - 12:17:14 15437 firefox do_sys_open /run/user/1000/dconf/user 12:17:14 15437 firefox do_sys_open /home/tecmint/.config/dconf/user 12:18:07 15437 firefox do_sys_open /run/user/1000/dconf/user 12:18:07 15437 firefox do_sys_open /home/tecmint/.config/dconf/user 12:18:13 15437 firefox do_sys_open /sys/devices/system/cpu/present 12:18:13 15437 firefox do_sys_open /dev/urandom 12:18:13 15437 firefox do_sys_open /dev/urandom 12:18:14 15437 firefox do_sys_open /usr/share/fonts/truetype/liberation/LiberationSans-Italic.ttf 12:18:14 15437 firefox do_sys_open /usr/share/fonts/truetype/liberation/LiberationSans-Italic.ttf 12:18:14 15437 firefox do_sys_open /usr/share/fonts/truetype/liberation/LiberationSans-Italic.ttf 12:18:14 15437 firefox do_sys_open /sys/devices/system/cpu/present 12:18:14 15437 firefox do_sys_open /dev/urandom 12:18:14 15437 firefox do_sys_open /dev/urandom 12:18:14 15437 firefox do_sys_open /dev/urandom 12:18:14 15437 firefox do_sys_open /dev/urandom 12:18:15 15437 firefox do_sys_open /sys/devices/system/cpu/present 12:18:15 15437 firefox do_sys_open /dev/urandom 12:18:15 15437 firefox do_sys_open /dev/urandom 12:18:15 15437 firefox do_sys_open /sys/devices/system/cpu/present 12:18:15 15437 firefox do_sys_open /dev/urandom 12:18:15 15437 firefox do_sys_open /dev/urandom ....
Akopọ
BCC jẹ ohun elo irinṣẹ ti o lagbara ati irọrun-lati-lo fun ọpọlọpọ awọn iṣẹ ṣiṣe Isakoso eto bii ibojuwo ṣiṣe ṣiṣe eto, ẹrọ I/O wiwa kakiri ẹrọ, awọn iṣẹ TCP, awọn iṣiṣẹ eto faili, awọn ibi syscalls, awọn iwadii Node.js, pẹlu ọpọlọpọ diẹ sii. Ni pataki, o gbe wọle pẹlu ọpọlọpọ awọn faili apẹẹrẹ ati awọn oju-iwe eniyan fun awọn irinṣẹ lati ṣe itọsọna fun ọ, jẹ ki o jẹ ọrẹ olumulo ati igbẹkẹle.
Ni ikẹhin ṣugbọn ko kere ju, o le pada si ọdọ wa nipa pinpin awọn ero rẹ nipa koko-ọrọ, beere awọn ibeere, ṣe awọn imọran to wulo tabi eyikeyi esi todara nipasẹ abala asọye ni isalẹ.
Fun alaye diẹ sii ati ibewo ilo: https://iovisor.github.io/bcc/