Compilation speeds.


R. Clayton (rclayton@clayton.cs.monmouth.edu)
(no date)


Do you know why the cslab compiler is so slow?

  You haven't told me which machine (there are 24 of them) or which compiler
  (there are two of them). But, I'm guessing you're talking about g++ on
  cslab00. Here's a message from Joe Chung, the system administrator for those
  machines:

    cslab00 has a SINGLE 1st generation UltraSPARC CPU running at a "blazing"
    143 MHz. Imagine how much that single slow CPU has to labor when 10 or more
    users are on the system.

    If you want compiles to go faster, you should do them on cslab02, 03, 04,
    05, 06, 07, 21 and 22 which all have more recent UltraSPARCs running at 400
    MHz.

  Use the w command to find out how many users are on the system:

    cs uname -n
    cslab21

    cs date
    Fri Feb 15 19:44:07 EST 2002

    cs w
      7:44pm up 5 day(s), 12:39, 1 user, load average: 0.04, 0.01, 0.02
    User tty login@ idle JCPU PCPU what
    rclayton pts/2 7:43pm w

    cs exit
    Connection closed.

    cs uname -n
    cslab00

    cs w
      7:44pm up 39 day(s), 2:30, 35 users, load average: 0.52, 1.18, 1.19
    User tty login@ idle JCPU PCPU what
    bastian pts/20 Wed11am 4:56 3:37 -ksh
    s0289758 pts/33 Mon 8am 4days bash
    s0120533 pts/14 4:29pm 1:31 2:33 -ksh
    s0348238 pts/4 Tue 7pm 3days vi .profile
    dlynch pts/18 Mon 9am 5:54 54 3 -ksh
    s0441588 pts/6 5:13pm 21 3:08 vi main.cc
    s0385001 pts/30 6:44pm vi swp.cc
    s0441588 pts/26 6:04pm 22 4:04 -ksh
    s0462595 pts/13 7:17pm 1:22 vi proj2.cc
    s0311848 pts/43 3:28pm 45 30 2 vi junk
    s0460573 pts/22 7:19pm 1 vi char.cc
    s0451989 pts/3 7:30pm 2 -ksh
    s0441588 pts/28 4:55pm 5 2:05 -ksh
    s0385001 pts/23 6:44pm 9 -ksh
    s0462457 pts/19 3:59pm 18:43 1:14 vi 1.cc
    frederic pts/7 23Jan0218days 26 -csh
    rclayton pts/40 7:44pm 1 w
    frederic pts/12 22Jan02 2days 10:24 1 -csh
    s0393483 pts/38 5:21pm 2:15 -ksh
    s0451989 pts/42 7:29pm 13 -ksh
    s0451989 pts/29 7:30pm 1:24 vi bacup.cc
    s0451230 pts/35 5:12pm 2 8:18 vi main.cc
    kosaka pts/27 Tue 1pm 3days 5 -ksh
    s0448552 pts/39 3:44pm 52 vi c1.cc
    s0301136 pts/2 5:30pm 1:41 2 telnet hawkmail
    s0462503 pts/16 6:55pm 20 vi srv.c
    s0462503 pts/10 6:54pm 2 1:21 -ksh
    s0492522 pts/31 5:39pm 16 3:18 vi output.txt
    frederic pts/17 29Jan02 2days 6:24 vi my_vector.h
    s0492522 pts/32 5:41pm 20 1:57 vi output.txt
    s0311848 pts/21 5:46pm 47 13 2 /bin/sh junkmenu
    s0492924 pts/47 5:53pm 15 58 more -s /usr/man/cat1/help.1
    s0453002 dtremote Thu 7pm 24:09 2:28 1:22 /usr/dt/bin/dtscreen -mode pyro
    s0422365 pts/41 5Feb0210days vi hello.cc
    s0348238 pts/44 Tue 7pm 3days -ksh

cs



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