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Diffstat (limited to 'contrib/ntp/html/hints/solaris.xtra.4095849')
-rw-r--r-- | contrib/ntp/html/hints/solaris.xtra.4095849 | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/contrib/ntp/html/hints/solaris.xtra.4095849 b/contrib/ntp/html/hints/solaris.xtra.4095849 deleted file mode 100644 index 8d3ce80..0000000 --- a/contrib/ntp/html/hints/solaris.xtra.4095849 +++ /dev/null @@ -1,74 +0,0 @@ - Bug Id: 4095849 - Category: kernel - Subcategory: syscall - State: evaluated - Synopsis: time_constant value >6 with PLL in use leads to integer divide - zero trap panic - Description: -If the time_constant parameter is 7 or higher, and the phase-lock looping model -is in use, the system will take a "integer divide zero trap" panic in -the clock routine as soon as the time_offset becomes non-zero. - -time_constant defaults to 0. The only place it is set is in the ntp_adjtime -system call, from the 'constant' element of the timex structure argument. - - Work around: -Never set the constant element of the timex structure passed to ntp_adjtime to -a value larger than 6. - -satish.mynam@Eng 1998-04-30 -1. Use Sun's version of NTP software instead of PD version. This problem -is not seen with Sun's NTP version (which is mostly eqivalent to PD NTP 3.4 -plus some Sun's local functionality futures). - -2. Workaround for the public domain NTP version ONLY: - ===================================================== -The workaround for public domain NTP version is to disable the -KERNEL_PLL from the NTP code. This way ntp_Adjtime() system call is -totally bypassed without sacrificing any of the functionality of the -NTP. The only hit you might see is the way kernel precision timminig -is done without the PLL algorithm in the kernel. - - The easiest way to disable ntp_adjtime option is(without changing - any makefiles or other config files) to disable the KERNEL_PLL - value in the ./config.h file. - -After doing a ./configure for probing for all the necessary tools(compilers, -os version, libraries), please comment out KERNEL_PLL macro in -the ./config.h file. This will disable the KERNEL_PLL part of the source -code and the newly obtained xntpd is just similar to the old one but it -does not use ntp_adjtime() system call. This prevents it from panic'ng -the kernel. - -/*#define KERNEL_PLL 1*/ - -I complied a new xntpd binary this way and it does nothave any ntp_adjtime() -related stuff. - -Default: -======= -/net/divya/export/home/mynam/public_domain/ntp/xntp3-5.92/xntpd>strings -xntpd | -grep ntp_adjtime -354:adj_frequency: ntp_adjtime failed: %m -357:loop_config: ntp_adjtime() failed: %m -435:get_kernel_info: ntp_adjtime() failed: %m - -With KERNEL_PLL disabled in config.h file --======================= - -/net/divya/export/home/mynam/public_domain/ntp/xntp3-5.92/xntpd>strings -xntpd.nopll | grep ntp_adjtime - - Integrated in releases: - Duplicate of: - Patch id: - See also: 4133517 - Summary: -If the time_constant parameter is 7 or higher, and the phase-lock looping model -is in use, the system will take a "integer divide zero trap" panic in -the clock routine as soon as the time_offset becomes non-zero. - -time_constant defaults to 0. The only place it is set is in the ntp_adjtime -system call, from the 'constant' element of the timex structure argument. ----------------------------------------------------------------------------- |