Awal yang lambat dari Midnight Commander

Apakah ada cara untuk mencegah mcpembukaan 10-30 detik?

Ini bekerja untuk saya sekarang. saya menggunakan

GNU Midnight Commander 4.8.21

strace menunggu lama

connect(3, {sa_family=AF_INET, sin_port=htons(6011),
  sin_addr=inet_addr("x.x.x.x")}, 16) = ? ERESTARTSYS
  (To be restarted if SA_RESTART is set)' 

Saya mencoba ini:

# hostname

gunakan ini untuk /etc/hosts:

nameofhost=hostname

tambahkan ini $nameofhostke /etc/hostsbaris on yang dimulai dengan

127.0.0.1 localhost ... $nameofhost 

Bersulang!

integrasi mc / subkulit adalah penyebab sering; untuk memverifikasi, coba:

alias mc="mc --nosubshell"

Sebenarnya mengedit / etc / hosts memecahkan masalah bagi saya.
MC saya membutuhkan waktu 10 detik untuk memulai karena fakta bahwa selama startup mc mencoba untuk menyelesaikan nama host lokal ke alamat IP.
Saya menambahkan ke / etc / hosts baris berikut (nama host saya adalah FOO) 127.0.0.2 FOO.domain FOO Itu langsung memecahkan masalah.

Memeriksa

host `hostname`

dapatkan hasil cepat

MC menggunakan nama host pada awalnya untuk terhubung ke layanan internal

Dalam situasi yang sama pada Fedora 18 saya menambahkan nilai hostname ke / etc / hosts dan itu membantu.

Mungkin mulai lambat karena memulai subkulit (ditampilkan saat Anda menekan Ctrl-O) dan hanya menampilkan UI saat subkulit dimulai. Saya menggunakan zsh dan saya perhatikan ketika saya menghapus ~/.zshrcfile saya mc mulai secara instan.

Butuh sekitar 10 detik untuk memulai mc. Menjalankan strace -r -tt -o mc.strace mcsaya mendapat:

...
 0.000023 pipe([7, 8])              = 0
 0.000028 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7fcad000fa50) = 3332
 0.000247 write(5, " PROMPT_COMMAND=${PROMPT_COMMAND"..., 75) = 75
 0.000050 rt_sigaction(SIGINT, {0x449960, [], SA_RESTORER, 0x7fcaced23740}, NULL, 8) = 0
 0.000034 select(8, [5 7], NULL, NULL, {10, 0}) = 1 (in [5], left {9, 999996})
 0.000039 read(5, " PROMPT_COMMAND=${PROMPT_COMMAND"..., 128) = 76
 0.000032 select(8, [5 7], NULL, NULL, {9, 999996}) = 1 (in [5], left {9, 985005})
 0.015050 read(5, "[yuri@yuri ~]  PROM", 128) = 19
 0.000031 select(8, [5 7], NULL, NULL, {9, 985005}) = 1 (in [5], left {9, 985001})
 0.000036 read(5, "PT_COM", 128)    = 6
 0.000026 select(8, [5 7], NULL, NULL, {9, 985001}) = 1 (in [5], left {9, 984998})
 0.000033 read(5, "MAND=", 128)     = 5
 0.000026 select(8, [5 7], NULL, NULL, {9, 984998}) = 1 (in [5], left {9, 984995})
 0.000033 read(5, "${PR", 128)      = 4
 0.000025 select(8, [5 7], NULL, NULL, {9, 984995}) = 1 (in [5], left {9, 984992})
 0.000034 read(5, "OMPT", 128)      = 4
 0.000025 select(8, [5 7], NULL, NULL, {9, 984992}) = 1 (in [5], left {9, 984989})
 0.000034 read(5, "_COM", 128)      = 4
 0.000026 select(8, [5 7], NULL, NULL, {9, 984989}) = 1 (in [5], left {9, 984986})
 0.000034 read(5, "MAND", 128)      = 4
 0.000025 select(8, [5 7], NULL, NULL, {9, 984986}) = 1 (in [5], left {9, 984983})
 0.000033 read(5, ":+$", 128)       = 3
 0.000025 select(8, [5 7], NULL, NULL, {9, 984983}) = 1 (in [5], left {9, 984980})
 0.000033 read(5, "PRO", 128)       = 3
 0.000025 select(8, [5 7], NULL, NULL, {9, 984980}) = 1 (in [5], left {9, 984977})
 0.000033 read(5, "MPT", 128)       = 3
 0.000025 select(8, [5 7], NULL, NULL, {9, 984977}) = 1 (in [5], left {9, 984974})
 0.000033 read(5, "_CO", 128)       = 3
 0.000025 select(8, [5 7], NULL, NULL, {9, 984974}) = 1 (in [5], left {9, 984971})
 0.000033 read(5, "MMA", 128)       = 3
 0.000026 select(8, [5 7], NULL, NULL, {9, 984971}) = 1 (in [5], left {9, 984968})
 0.000032 read(5, "ND;", 128)       = 3
 0.000025 select(8, [5 7], NULL, NULL, {9, 984968}) = 1 (in [5], left {9, 984965})
 0.000033 read(5, " }", 128)        = 2
 0.000026 select(8, [5 7], NULL, NULL, {9, 984965}) = 1 (in [5], left {9, 984962})
 0.000033 read(5, "'pw", 128)       = 3
 0.000025 select(8, [5 7], NULL, NULL, {9, 984962}) = 1 (in [5], left {9, 984959})
 0.000033 read(5, "d>", 128)        = 2
 0.000026 select(8, [5 7], NULL, NULL, {9, 984959}) = 1 (in [5], left {9, 984956})
 0.000032 read(5, "&8;", 128)       = 3
 0.000026 select(8, [5 7], NULL, NULL, {9, 984956}) = 1 (in [5], left {9, 984953})
 0.000032 read(5, "ki", 128)        = 2
 0.000025 select(8, [5 7], NULL, NULL, {9, 984953}) = 1 (in [5], left {9, 984950})
 0.000033 read(5, "ll ", 128)       = 3
 0.000026 select(8, [5 7], NULL, NULL, {9, 984950}) = 1 (in [5], left {9, 984947})
 0.000032 read(5, "-S", 128)        = 2
 0.000025 select(8, [5 7], NULL, NULL, {9, 984947}) = 1 (in [5], left {9, 984944})
 0.000033 read(5, "TO", 128)        = 2
 0.000025 select(8, [5 7], NULL, NULL, {9, 984944}) = 1 (in [5], left {9, 984941})
 0.000033 read(5, "P ", 128)        = 2
 0.000025 select(8, [5 7], NULL, NULL, {9, 984941}) = 1 (in [5], left {9, 984938})
 0.000033 read(5, "$$", 128)        = 2
 0.000033 select(8, [5 7], NULL, NULL, {9, 984938}) = 1 (in [5], left {9, 984935})
 0.000034 read(5, "'\r\n", 128)     = 3
 0.000025 select(8, [5 7], NULL, NULL, {9, 984935}) = 1 (in [5], left {9, 984886})
 0.000082 read(5, "bash: PROMPT_COMMAND: line 1: sy"..., 128) = 128
 0.000033 select(8, [5 7], NULL, NULL, {9, 984886}) = 1 (in [5], left {9, 984882})
 0.000071 read(5, "tory -r; ; pwd>&8;kill -STOP $$'"..., 128) = 48
 0.000061 select(8, [5 7], NULL, NULL, {9, 984882}) = 0 (Timeout)
 9.995037 rt_sigaction(SIGINT, {SIG_IGN, [], SA_RESTORER, 0x7fcaced23740}, NULL, 8) = 0
 0.000090 write(1, "\33[?1001s\33[?1002h\33[?1006h", 24) = 24
 0.000066 write(1, "\33[?2004h", 8) = 8
 0.000034 geteuid()                 = 1000
 0.000064 access("/home/yuri/.config/mc/filehighlight.ini", R_OK) = -1 ENOENT (No such file or directory)
 0.000061 access("/etc/mc/filehighlight.ini", R_OK) = 0
 0.000042 access("/etc/mc/filehighlight.ini", R_OK) = 0
 0.000044 stat("/etc/mc/filehighlight.ini", {st_mode=S_IFREG|0644, st_size=1119, ...}) = 0
 0.000035 open("/etc/mc/filehighlight.ini", O_RDONLY) = 9
...

Melihat output ini, saya memutuskan untuk memulai mcdengan empty PROMPT_COMMAND( PROMPT_COMMAND= mc), dan itu dimulai seketika. Seharusnya saya ada di sana:

history -a; history -c; history -r;

UPD Setelah beberapa penggalian lagi, ternyata itu tidak ada hubungannya dengan sejarah ( PROMPT_COMMAND=';' strace -r -tt -o mc.strace -s 1000 mc):

 0.000197 write(5, " PROMPT_COMMAND=${PROMPT_COMMAND:+$PROMPT_COMMAND; }'pwd>&8;kill -STOP $$'\n", 75) = 75
 0.000068 rt_sigaction(SIGINT, {0x449960, [], SA_RESTORER, 0x7f12567fc660}, NULL, 8) = 0
 0.000049 select(8, [5 7], NULL, NULL, {10, 0}) = 1 (in [5], left {9, 999996})
 0.000055 read(5, " PROMPT_COMMAND=${PROMPT_COMMAND:+$PROMPT_COMMAND; }'pwd>&8;kill -STOP $$'\r\n", 128) = 76
 0.000050 select(8, [5 7], NULL, NULL, {9, 999996}) = 1 (in [5], left {9, 981008})
 0.019073 read(5, "bash: PROMPT_COMMAND: line 0: syntax error near unexpected token `;'\r\nbash: PROMPT_COMMAND: line 0: `;'\r\n", 128) = 105
 0.000041 select(8, [5 7], NULL, NULL, {9, 981008}) = 1 (in [5], left {9, 980786})
 0.000292 read(5, "[\33[1;30myuri\33[0m@\33[1;33myuri\33[0m ~]  PROM", 128) = 41
 0.000070 select(8, [5 7], NULL, NULL, {9, 980786}) = 1 (in [5], left {9, 980782})
 0.000075 read(5, "PT_COMMAN", 128) = 9
 0.000061 select(8, [5 7], NULL, NULL, {9, 980782}) = 1 (in [5], left {9, 980778})
 0.000058 read(5, "D=${PRO", 128)   = 7
 0.000047 select(8, [5 7], NULL, NULL, {9, 980778}) = 1 (in [5], left {9, 980775})
 0.000059 read(5, "MPT_CO", 128)    = 6
 0.000048 select(8, [5 7], NULL, NULL, {9, 980775}) = 1 (in [5], left {9, 980772})
 0.000058 read(5, "MMAND", 128)     = 5
 0.000047 select(8, [5 7], NULL, NULL, {9, 980772}) = 1 (in [5], left {9, 980768})
 0.000056 read(5, ":+$P", 128)      = 4
 0.000047 select(8, [5 7], NULL, NULL, {9, 980768}) = 1 (in [5], left {9, 980764})
 0.000057 read(5, "ROMPT", 128)     = 5
 0.000047 select(8, [5 7], NULL, NULL, {9, 980764}) = 1 (in [5], left {9, 980761})
 0.000056 read(5, "_COM", 128)      = 4
 0.000047 select(8, [5 7], NULL, NULL, {9, 980761}) = 1 (in [5], left {9, 980758})
 0.000057 read(5, "MAND", 128)      = 4
 0.000046 select(8, [5 7], NULL, NULL, {9, 980758}) = 1 (in [5], left {9, 980755})
 0.000057 read(5, "; }'", 128)      = 4
 0.000046 select(8, [5 7], NULL, NULL, {9, 980755}) = 1 (in [5], left {9, 980752})
 0.000056 read(5, "pwd>", 128)      = 4
 0.000047 select(8, [5 7], NULL, NULL, {9, 980752}) = 1 (in [5], left {9, 980749})
 0.000057 read(5, "&8;k", 128)      = 4
 0.000047 select(8, [5 7], NULL, NULL, {9, 980749}) = 1 (in [5], left {9, 980746})
 0.000057 read(5, "ill", 128)       = 3
 0.000058 select(8, [5 7], NULL, NULL, {9, 980746}) = 1 (in [5], left {9, 980743})
 0.000057 read(5, " -ST", 128)      = 4
 0.000046 select(8, [5 7], NULL, NULL, {9, 980743}) = 1 (in [5], left {9, 980740})
 0.000058 read(5, "OP ", 128)       = 3
 0.000046 select(8, [5 7], NULL, NULL, {9, 980740}) = 1 (in [5], left {9, 980736})
 0.000056 read(5, "$$'\r\n", 128)   = 5
 0.000048 select(8, [5 7], NULL, NULL, {9, 980736}) = 1 (in [5], left {9, 980721})
 0.000069 read(5, "bash: PROMPT_COMMAND: line 1: syntax error near unexpected token `;;'\r\nbash: PROMPT_COMMAND: line 1: `;; pwd>&8;kill -STOP $$'\r\n", 128) = 128
 0.000049 select(8, [5 7], NULL, NULL, {9, 980721}) = 1 (in [5], left {9, 980713})
 0.000062 read(5, "[\33[1;30myuri\33[0m@\33[1;33myuri\33[0m ~] ", 128) = 36
 0.000047 select(8, [5 7], NULL, NULL, {9, 980713}) = 0 (Timeout)
 9.990855 rt_sigaction(SIGINT, {SIG_IGN, [], SA_RESTORER, 0x7f12567fc660}, NULL, 8) = 0

Konjungtur saya adalah bahwa mcdengan PROMPT_COMMANDcara yang salah mengacaukan Itu berubah PROMPT_COMMANDsehingga jika mengandung ;, yang memicu kesalahan bash. Dengan demikian, tidak ada yang ditulis untuk deskriptor 8, yang menghalangi proses sampai batas waktu. Koreksi saya, jika saya salah.

Saya memiliki masalah ini untuk waktu yang sangat lama dan akhirnya saya tidak menggunakan Komandan Tengah Malam lagi ...

Tetapi saya baru-baru ini menemukan solusinya !!! Dalam kasus saya, itu hanya terkait dengan cangkang alternatif saya: Saya menggunakan ikan. http://fishshell.com/

Keduanya tidak bekerja dengan baik. Saya baru saja mengubah skrip untuk memastikan saya menggunakan bash dan bukan ikan.

Baru saja menyelesaikan masalah yang sama pada FreeBSD. Saya pikir, lebih tepat mengedit /etc/hostsdengan cara berikut:

127.0.0.1 localhost localhost.my.domain myhost.my.domain myhost

karena hostssintaks entri file adalah (lihat host (5) - halaman manual Linux ):

IP_address canonical_hostname [aliases...]

Jadi, jika Anda hanya menambahkan hostsfile Anda seperti

127.0.0.2 myhost.my.domain myhost

maka kamu akan mendapatkan

root@myhost:~# ping myhost
PING myhost.my.domain (127.0.0.2): 56 data bytes
ping: sendto: Can't assign requested address
ping: sendto: Can't assign requested address
ping: sendto: Can't assign requested address
ping: sendto: Can't assign requested address
^C
--- myhost.my.domain ping statistics ---
4 packets transmitted, 0 packets received, 100.0% packet loss

Tetapi jika Anda mengedit hostsfile seperti pada contoh pertama, Anda akan mendapatkan jawaban ping yang benar:

root@myhost:~# ping myhost
PING localhost (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.060 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.050 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.030 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.040 ms
64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=0.046 ms
64 bytes from 127.0.0.1: icmp_seq=5 ttl=64 time=0.036 ms
^C
--- localhost ping statistics ---
6 packets transmitted, 6 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.030/0.044/0.060/0.010 ms

MC mulai dengan cepat dua arah.

mc -X

bekerja untuk saya (xterm dinonaktifkan)

Jika Anda menggunakan MobaXterm untuk terhubung ke SSH di server Anda, Anda mungkin perlu mematikan penerusan X11 untuk memulai mc segera. Inilah yang memperlambat awal mc.

Cobalah untuk menghapus baris "search whatever.something" dari /etc/resolv.conf

/etc/hosts harus memiliki garis:

127.0.0.1 localhost

127.0.0.2 hostname.domain hostname

"hostname" adalah nama host Anda dan "domain" adalah domain Anda.