Why in.mpathd errors - performance possibly?


 
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Operating Systems Solaris Why in.mpathd errors - performance possibly?
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Old 08-17-2007
Why in.mpathd errors - performance possibly?

Hello all,
Run a search but see no previous queries. Trying to get to the bottom of why a server running Solaris 9 reports the following every other day:

lonpcbcfp1:Jun 20 16:33:20 lonpcbcfp1 in.mpathd[55]: [ID 327637 daemon.info] missed sending 17 probes cur_time 1478014085 snxt_time 1478015026 snxt_basetime 1478014018

lonpcbcfp1:Jun 20 16:33:20 lonpcbcfp1 in.mpathd[55]: [ID 327637 daemon.info] missed sending 16 probes cur_time 1478014126 snxt_time 1478014742 snxt_basetime 1478013696

lonpcbcfp1:Jun 20 16:33:20 lonpcbcfp1 in.mpathd[55]: [ID 327637 daemon.info] missed sending 16 probes cur_time 1478014126 snxt_time 1478014781 snxt_basetime 1478013937

lonpcbcfp1:Jun 20 16:33:20 lonpcbcfp1 in.mpathd[55]: [ID 327637 daemon.info] missed sending 16 probes cur_time 1478014126 snxt_time 1478014248 snxt_basetime 1478013349

messages:Jun 20 16:33:20 lonpcbcfp1 in.mpathd[55]: [ID 327637 daemon.info] missed sending 17 probes cur_time 1478014085 snxt_time 1478015026 snxt_basetime 1478014018


I'm suspecting that these messages arise due to some performance bottleneck on the system that prevents mpathd being able to send probes. Thing is, checking sar stats for 10 minute intervals around these times doesn't indicate an obvious memory, io or cpu bottleneck. Do these messages indicate a performance issue could still exist or is there another more likely cause?

Thanks!
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install-solaris(1M)                                                                                                            install-solaris(1M)

NAME
install-solaris - install the Solaris operating system SYNOPSIS
install-solaris install-solaris invokes the Solaris Install program. Depending on graphical capability and available memory at the time of invocation, install-solaris invokes either a text-based installer or a graphical installer. The following minimum requirements for physical memory dictate which features are available during installation: For SPARC machines: 128 MB Minimum physical memory for all installation types 128 MB Minimum physical memory required for windowing system 384 MB Minimum physical memory required for graphical-based installation For x86 machines: 256 MB Minimum physical memory for all installation types 256 MB Minimum physical memory required for windowing system 512 MB Minimum physical memory required for graphical-based installation In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number of fea- tures available. install-solaris exists only on the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the for more details. install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the installation media. Refer to the for disk space requirements. Refer to the for more information on the various menus and selections. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcdrom (Solaris instal- | | |lation media) | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ pkginfo(1), install(1M), pkgadd(1M), attributes(5) It is advisable to exit install-solaris by means of the exit options in the install-solaris menus. 23 Sep 2005 install-solaris(1M)