Re: [MonAMI-users] unable to see some graphs
Status: Alpha
Brought to you by:
paulmillar
From: Arnau B. <arn...@pi...> - 2009-07-28 08:48:15
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On Tue, 28 Jul 2009 09:31:13 +0200 Paul Millar wrote: > On Monday 27 July 2009 11:10:39 Arnau Bria wrote: Good morning! > > Glad to see that you're still supporting this project... Last post > > on blog are one year old! > > Sadly true, the blog has suffered lately. The move from the UK to > Germany has soaked up a lot of spare time and, now that my main job > doesn't involve MonAMI, I have less time to spend. > > Still I've some nice things in the pipe-line for MonAMI ... we'll wait for them! [...] > When you got this image on disk, try examining its contents. Perhaps > the easiest is to use hexdump (I believe a pretty standard tool); for > example: > > hexdump -C /bin/bash | head -20 > and > hexdump -C /bin/bash | tail -20 I saw some important diff: bad one: arnau@lx-arnau ~ $ hexdump -C torque-graph.png | head -20 00000000 0a 89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 |..PNG........IHD| 00000010 52 00 00 01 8d 00 00 00 ac 08 06 00 00 00 87 20 |R.............. | 00000020 f0 f6 00 00 00 4a 74 45 58 74 53 6f 66 74 77 61 |.....JtEXtSoftwa| 00000030 72 65 00 52 52 44 74 6f 6f 6c 2c 20 54 6f 62 69 |re.RRDtool, Tobi| 00000040 61 73 20 4f 65 74 69 6b 65 72 20 3c 74 6f 62 69 |as Oetiker <tobi| good one (generated with rrdtool) arnau@lx-arnau ~ $ hexdump -C rrdoutput | head -20 00000000 89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 |.PNG........IHDR| 00000010 00 00 02 b9 00 00 00 e9 08 06 00 00 00 20 4f 2f |............. O/| 00000020 6a 00 00 00 4a 74 45 58 74 53 6f 66 74 77 61 72 |j...JtEXtSoftwar| 00000030 65 00 52 52 44 74 6f 6f 6c 2c 20 54 6f 62 69 61 |e.RRDtool, Tobia| 00000040 73 20 4f 65 74 69 6b 65 72 20 3c 74 6f 62 69 40 |s Oetiker <tobi@| notice that bad one starts with ..PNG and the good one with .PNG (0a 89 50 vs 89 50) I've opened it with mc and saw some blank line at the beggining of the file. After removing it, the png is displayed again. What could be insertering that blank line? > > but it's not shown in ganglia... > > > > does it make sense to you? > > Not yet, but I have hope! thanks for your help! > Cheers, > Paul. Cheers, Arnau |