[es] - Popravio sam JIT!

random
Vladimir Vrzić
Beograd

Član broj: 85
Poruke: 3866
*.f.bg.ac.yu.

Sajt: www.last.fm/user/vrza

+4 Profil

^{10.11.2004. u 16:10 - pre 241 meseci}

JIT transport (jit.elitesecurity.org) više ne opterećuje glavni ES server. Samim tim se izvršava pod normalnim prioritetom, pa bi trebalo da radi brže i pouzdanije.

Za slučaj da nekog zanima, problem je bio u WPJabber jabberd servisu, na koji se JIT oslanja. ktrace dotičnog procesa je pokazao puno gettimeofday() poziva u beskonačnoj petlji.

Code:
/tmp # kdump
  9659 jabberd  CALL  poll(0x809b000,0,0)
  9659 jabberd  RET   poll 0
  9659 jabberd  CALL  gettimeofday(0x280c18d8,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0x280c18d8,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad30,0xbfadad38)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  poll(0x80b1400,0x14,0)
  9659 jabberd  RET   poll 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  PSIG  SIGPROF caught handler=0x280b2fa0 mask=0x0 code=0x0
  9659 jabberd  CALL  gettimeofday(0x280c18d8,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  sigprocmask(0x3,0x280c18fc,0)
  9659 jabberd  RET   sigprocmask 0
  9659 jabberd  CALL  sigreturn(0xbfadaa10)
  9659 jabberd  RET   sigreturn JUSTRETURN
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
  9659 jabberd  RET   gettimeofday 0
  9659 jabberd  CALL  gettimeofday(0xbfadad38,0)
...

Taman sam hteo da zaronim u sors, ali prvo sam hteo da zamenim samo wpjabber core najnovijom verzijom. Ispostavi se da je bag ispravljen, ali JIT projekat nije ažurirao poslednju verziju da uključuje najnoviji wpjabberd. I tako, problem koji nas je smarao mesecima, rešen za 5 minuta.

Ne znam zašto sam ovo ispričao, možda nekome bude od koristi. A ako ne koristi, onda smara ;o).

int rand(void);

Those who do not understand Unix are condemned to reinvent it, poorly.

Upali lampicu — koristi Jabber!

Odgovor na temu