On 6/13/06, Thomas Sluyter <<a href="mailto:tsluyter@kilala.nl">tsluyter@kilala.nl</a>> wrote:<div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> On 13 Jun, 2006, at 10:27, Ben O'Hara wrote: > db5# swap -l > swapfile dev swaplo blocks free > /dev/md/dsk/d20 85,20 16 2097392 0 > > db5# swap -s > total: 3431360k bytes allocated + 34488k reserved = 3465848k used, > 820608k available From the man-page of "swap": > The blocks column from swap -l reports: > The swaplen value for the area in 512-byte blocks. Also from that man-page: > The allocated column from swap -s reports: > The total amount of swap space in bytes currently allocated > for use as backing store. So there's a discrepancy right there. How could your swap partition be 2.097.392 * 512 (about 1G) in size, when you have a total of over 3.4G in use? Swap -l does indeed report that there are zero blocks free... Odd. Could it be that you defined a non-default block size when creating the swap space? Something like ~2048 per block? Could be that "swap - l" doesn't actually report the size in 512 blocks, but in the -real- size blocks. If check_swap was relying on swap -l , then the calculation would be off as well... Seems like this might be a bit of a bug in Solaris' "swap -l" command? Anywho, looking at my own systems the combination of "df -k" and "swap -s" seems to be the more reliable way of telling the real swap usage. So instead of the output of "metastat" I'm more curious about the output of "df -k". This should show the size for your swap device in kB (look for /var/run)... Now, if "df -k" supports your claim that swap space is 4G in size I'd wager that check_swap was using the "swap -l" approach, while it could be making better use of the "swap -s" way.</blockquote><div> Hi Thomas, thanks for the detailed reply. df -k is showing Filesystem kbytes used avail capacity Mounted on swap 810152 24 810128 1% /var/run Which seems to suggest swap is only 800MB with 1% used? The source for check_swap has the following # ifdef sun if (!allswaps) { asprintf(&swap_command, "%s", "/usr/sbin/swap -s"); asprintf(&swap_format, "%s", "%*s %*dk %*s %*s + %*dk %*s = %dk %*s %dk %*s"); conv_factor = 2048; } # endif Which to me suggests that its using swap -s for its calculations? </div> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> There's more buginess in check_swap anyway... See below: > JST $ ./check_swap -w 85% -c 95% > Warning percentage should be more than critical percentage > Usage: > check_swap [-a] -w <used_percentage>% -c <used_percentage>% > check_swap [-a] -w <bytes_free> -c <bytes_free> > check_swap (-h | --help) for detailed help > check_swap (-V | --version) for version information > > JST $ ./check_swap -w 15% -c 5% > SWAP OK: 98% free (1360 MB out of 1391 MB) |swap=1360MB;208;69;0;1391 Meaning that the author got "used_percentage" mixed up with "free_percentage"</blockquote><div> Hmm, maybe worth not using check_swap then! Cheers Ben </div> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Cheers! Thomas _______________________________________________________ Nagios Plugin Development Mailing List <a href="mailto:Nagiosplug-devel@lists.sourceforge.net">Nagiosplug-devel@lists.sourceforge.net</a> Unsubscribe at <a href="https://lists.sourceforge.net/lists/listinfo/nagiosplug-devel"> https://lists.sourceforge.net/lists/listinfo/nagiosplug-devel</a> ::: Please include plugins version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote> </div> -- "A Scientist will earn a living by taking a really difficult problem and spends many years solving it, an engineer earns a living by finding really difficult problems and side stepping them"