Re: [zfs-discuss] long time to schedule commands

Sean Meighan Tue, 11 Jul 2006 09:36:16 -0700

i made sure path is clean, i also qualified the paths. time varies from 0.5 seconds to 15 seconds. If i just do a "timex pwd", it always seems to be fast. We are using csh.

itsm-mpk-2% env HOME=/app/canary PATH=/usr/bin:/usr/local/bin:/usr/sbin LOGNAME=canary HZ=100 TERM=xterm TZ=US/Pacific SHELL=/bin/csh MAIL=/var/mail/canary DISPLAY=sr1-ubrm-20:55.0 PWD=/app/canary/data/incoming USER=canary JAVA_HOME=/usr/jdk/instances/jdk1.5.0 TOOLS=/app/tools LD_LIBRARY_PATH= VIM=/app/tools/vim70/share/vim/vim70 CVSROOT=:pserver:[EMAIL PROTECTED]:/export/cvs/cvsroot EDITOR=vi ENV=/app/canary/.kshrc LD_LIBRARY_PATH== PATH=/usr/bin:/usr/local/bin:/usr/ccs/bin:/usr/sbin:/usr/openwin/bin= itsm-mpk-2% /bin/timex /bin/truss -fdD -o truss.out pwd /upload/canary/incoming real 13.57 user 0.01 sys 0.03
itsm-mpk-2% tail truss.out 26078: 0.0541 0.0001 close(3) = 0 26078: 0.0553 0.0012 munmap(0xFF3A0000, 8192) = 0 26078: 0.0556 0.0003 mmap(0x00010000, 24576, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANON|MAP_ALIGN, -1, 0) = 0xFF3A0000 26078: 0.0560 0.0004 getcontext(0xFFBFF7F8) 26078: 0.0562 0.0002 getrlimit(RLIMIT_STACK, 0xFFBFF7D8) = 0 26078: 0.0563 0.0001 getpid() = 26078 [25982] 26078: 0.0565 0.0002 setustack(0xFF3A2088) 26078: 0.0568 0.0003 getcwd("/upload/canary/incoming", 1025) = 0 26078: 0.0573 0.0005 write(1, " / u p l o a d / c a n a".., 24) = 24 26078: 0.0576 0.0003 _exit(0)

Michael Schuster - Sun Microsystems wrote:

Sean Meighan wrote:

I am not sure if this is ZFS, Niagara or something else issue? Does someone know why commands have the latency shown below?

*1) do a ls of a directory. 6.9 seconds total, truss only shows .07 seconds.*

[...]

this may be an issue with your $PATH. Do you see the same behaviour if you use absolute paths for the commands?

HTH
Michael

Sean Meighan
Mgr ITSM Engineering

Sun Microsystems, Inc.
US
Phone x32329 / +1 408 850-9537
Mobile 303-520-2024
Fax 408 850-9537
Email [EMAIL PROTECTED]

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