April 2004 - Zope - Zope lists

RE: [Zope] ZServer stops responding !? Help !?
by Jean-Francois.Doyon＠CCRS.NRCan.gc.ca 26 Apr '04

26 Apr '04

Chris, Thanks for tips. Here's what I've tried: When the sites looks like it's no longer responding, I connect with the monitor. Running Zope.app() is very slow, sometimes so slow I give up and try again. Once I get that setup, I run: app.Control_Panel.DebugInfo.dbconnections() >From what I gather, not all connections are taken up. I have at least 2 that are free: [{'info': ' (1391)', 'version': '', 'opened': 'Sat Apr 24 15:38:59 2004 (31.63s)'}, {'info': ' (7290)', 'version': '', 'opened': 'Sat Apr 24 15:30:36 2004 (534.16s)'}, {'info': "({'HTTP_ACCEPT': ... I try again a couplle of minutes later and I see: [{'info': ' (1391)', 'version': '', 'opened': 'Sat Apr 24 15:38:59 2004 (181.71s)'}, {'info': ' (7290)', 'version': '', 'opened': 'Sat Apr 24 15:30:36 2004 (684.24s)'}, {'info': "({'HTTP_ACCEPT': ... The 4 other requests (I have 6 threads) are the same, they haven't changed. So I think we can exclude running out of threads/db connections as a source of the problem. The other 4 requests are for various content types. the content types themselves work fine, so I'm going ot take note of which ones they are and see if one keeps recurring or something. Actually 2 of those do backend http calls, could there be some socket/timeout issue ? The call is to a CGI on the very same server though, so I'm confident it's running fine. At this point the monitor stops responding, in the middle of outputting that second list. I hit enter and I get: error: uncaptured python exception, closing channel <__main__.monitor_client connected at 0x400d5c0c> (socket.error:(9, 'Bad file descriptor') [/usr/local/lib/python2.3/asynchat.py|initiate_send|218] [/usr/local/lib/python2.3/asyncore.py|send|337]) I go look at my trace log, and stuff is still appearing in there ... Though nothing gets returned. CPU usage right now is not particularely big ... [zope@tincup log]$ ps auxw | grep Zope zope 31498 0.0 0.2 6484 4576 ? S 15:26 0:00 /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/zdaemon/ zope 31499 0.9 8.5 192848 176496 ? S 15:26 0:13 /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta zope 31500 0.0 8.5 192848 176496 ? S 15:26 0:00 /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta zope 31501 7.0 8.5 192848 176496 ? S 15:26 1:37 /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta zope 31502 5.8 8.5 192848 176496 ? S 15:26 1:21 /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta zope 31503 4.2 8.5 192848 176496 ? S 15:26 0:58 /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta zope 31504 0.5 8.5 192848 176496 ? S 15:26 0:07 /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta zope 31505 5.1 8.5 192848 176496 ? S 15:26 1:11 /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta zope 31506 1.6 8.5 192848 176496 ? S 15:26 0:22 /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta I'm going ot go do a requestprofiler now see what comes out ... Thanks again, J.F. -----Original Message----- From: Chris McDonough [mailto:chrism@plope.com] Sent: April 24, 2004 2:15 PM To: Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca Cc: zope(a)zope.org Subject: Re: [Zope] ZServer stops responding !? Help !? On Sat, 2004-04-24 at 13:53, Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca wrote: > G'day, > > I've got a rather bizarre but catastrophic problem. > > ZServer seems to stop responding. Sometimes it does so after days of > running, sometimes after a few seconds or minutes of uptime. > > I know it's ZServer because I can talk to the monitoring port without > problem. That may be a bit of flawed logic, because ZServer also runs the monitor port. > Also, the apache processes just pile up up to the limit allowed, > suggesting the proxying is not getting replies from the downstream > server. > > The strange thing is the cause seems to be occacional, or vary. For > hours on end I can sit there and restart it, and within minutes it stops > responding ... Then suddenly the problem "disappears", I restart it, and > I wait .... and nothing happens, it just keeps running. Nothing else > abnormal is going on the server so far as I can tell, there is very > little memory swapped, and the CPU usage is not abnormally high. It sounds as if Zope is doing something which blocks, consuming all database threads. > I used to have this problem very very rarely in the past, but since I > upgraded to Zope 2.7, it seems to have gotten much worse :( > > I tried accesing the DebugPanel from the monitor, but can't seem to get > it to do anything useful ... I don't know where else to look to find the > cause of this. > > This causes serious uptime problem on our main, high traffic site, which > is Very Bad. > > I'm on RedHat 7.3 (fully patched) > Python 2.3.3 (custom compiled) > Zope 2.7 > CMF 1.4.x (I forget ... the latest!) > Psycopg (Latest also) > And a variety of other products. I'd suggest using the "big M" or "trace" logging features along with the requestprofiler script to find out where the problem might be. - C

3 2

Installing on Apache ISP without server process
by Ian Brockbank 26 Apr '04

26 Apr '04

Hi, I am planning to move to a CMS, and Zope/Plone look like exactly what I am wanting. However, I have hit a snag. All the documentation I can find seems to assume ZServer is running, and that CGI is deprecated. However, my ISP does not allow long-running background processes, so this is not an option for me. Can I still run Zope without a server process? If so, where would I find documentation on how to go about it? (If not, I will have to regretfully say goodbye to Zope and look at other CMSs instead.) My web site only serves of the order of hundreds of pages per day, so performance is not a critical issue. Is there anything I can point my ISP at which would help _them_ install Zope and provide the server process? Thanks in advance, Ian Brockbank ian(a)scottishdance.net webmaster, http://www.scottishdance.net/ and http://www.rscds.org/

4 4

Zope & logrotate
by John Poltorak 26 Apr '04

26 Apr '04

How I go about archiving Zope's log every day? Can I get logrotate to process the log file? -- John

7 9

Re: stopping zope?
by Josef Albert Meile 26 Apr '04

26 Apr '04

>-bash-2.05b$ ps-ef|grep python >-bash: ps-ef: command not found Actually here you type the wrong command, that's why you got "comand not found". You have to type "ps -ef|grep python" (a space is needed between "ps" and "-ef"). >-bash-2.05b$ killall python > but killall python did the trick. However you have to keep on mind that it doesn't kill only zope. It will kill other applications that are currently using python on that moment. For example: on Gentoo linux you have the "emerge" command to install packages. This is a python script and it will be killed as well if you do a "killall python", so, you had better see the output of "ps -ef|grep python" in order to kill the correct proccess, or, as other people said, use the "zopectl" script. Regards, Josef _________________________________________________________________ The new MSN 8: advanced junk mail protection and 2 months FREE* http://join.msn.com/?page=features/junkmail

1 0

stopping zope?
by Aaron 26 Apr '04

26 Apr '04

I fought to get zope and plone installed and after much fighting succeeded, but now I am stuck with zope running and I need to stop it. I see that in my version of zope 6.2.3 there is stop in the root directory but I can't figure out how to use it and what to tell it to stop. I am using zopes server not apache or another server. I tried the zopebook but didn't find it. If someone could tell me how to kill a running zope or at least point me to the documentation it would be most appreciated Thanks Aaron

5 11

WEBDAV
by John Poltorak 26 Apr '04

26 Apr '04

How do I get started with WEBDAV? Can I use Firefox as a client and if so do I need to configure it to act as a WEDAV client? -- John

4 4

FW: [Zope] How to calculate variables using DTML
by gdamarys＠bellsouth.net 24 Apr '04

24 Apr '04

fulanito yo quisiera saber como yo me puedo comunicar en mi computadaora con cuba . gracias --------------------------------------------------------------------------

1 0

RE: [Zope] ZServer stops responding !? (Success!!)
by Jean-Francois.Doyon＠CCRS.NRCan.gc.ca 24 Apr '04

24 Apr '04

Dennis, Yup, I'm aware of all those issues. I'm due for an OS upgrade, and the 2.6 kernel is definitely in the plan precisely because of that feature. Hardware upgrades are harder to come by, but single-cpu will also be part of the requriements! In the mean time I think I figured it out (Time will tell.): I have a type class that caches some infromation in attributes, but when it's out of date it needs to get some of it from an FTP server. Apparently this feature is broken right now ... At first I noticed it was using a bad path, so I fixed that, but that still didn't help. I'm guessing something's change related to the FTP server and I wasn't notified. So I've disabled it entirely, because you know, it's saturday and gorgeous outside! Of note, Python 2.3 now supports socket timeout, something I've been wanting for a while, precisly because I was worried something like this could occur. I'll look after it all later. Many thanks to those who took the time to help on a week-end day, it was very helpful, and sorry to add traffic to the list, I work best when I'm thinking outloud :) Cheers, J.F. -----Original Message----- From: Dennis Allison [mailto:allison@sumeru.stanford.EDU] Sent: April 24, 2004 5:04 PM To: Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca Cc: chrism(a)plope.com; zope(a)zope.org Subject: RE: [Zope] ZServer stops responding !? Help !? I wonder if you are not seeing a threading problem. Python has a single global interpreter lock ("GIL") and there are many interactions with schedulers that I do not fully understand. On my system(s) I run dual Athlon machines with 4GB of memory and have occasionally seen unexplained behavior others have attributed to theading conflicts and the GIL. Most 2.4 kernels do not support CPU affinity, but that's the right solution. CPU affinitiy is available with the 2.6 kernels and with RH9. but RH9 has its own problems, now mostly fixed. You might want to try running with a single CPU and see if your problem remains. -d On Sat, 24 Apr 2004 Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca wrote: > Dennis, > > I'm using a 4 CPU machine PIII's at 700Mhz each, with 2 GB of RAM. (Dell > PE6400) > > I've got the check interval at 200 (Pystones/50, as I once saw somewhere). > > I runs very fast the rest of the time though :) > > As tyime goes by I'm compiling some data as to what the server is doing, and > I'm focusing > on one particular content type. > > This type does avariety things depending on the condition. The "simplest" > is that it does > nothing particular, just uses it's attributes and methods. > > In one case, it could run a local system command using os.popen() ... > > And in the really worst case, it starts an FTP connection. To a server > local to our shop, > but that I don't control. > > I'm wondeing if there's problems with the FTP connection or the system call > maybe in some > circumstances or for specific instances. Maybe osme "bad data" gets returned > ? > > Personally I would tend to look more towards the network I/O as a potential > source of "blocking" ... > > Anybody the intricacies of how the network I/O is handled in Python 2.3 > and/or Zope 2.7 ? Any > differences with previous versions ? > > The hunt continues ... > > Much thanks to all who are helping ! > > J.F. > > -----Original Message----- > From: Dennis Allison [mailto:allison@sumeru.stanford.EDU] > Sent: April 24, 2004 4:31 PM > To: Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca > Cc: chrism(a)plope.com; zope(a)zope.org > Subject: RE: [Zope] ZServer stops responding !? Help !? > > > Jean-Francois, > > What processor are you using? How many CPUs? > > -d > > On Sat, 24 Apr 2004 Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca wrote: > > > Chris, > > > > Thanks for tips. > > > > Here's what I've tried: > > > > When the sites looks like it's no longer responding, I connect with > > the monitor. > > > > Running Zope.app() is very slow, sometimes so slow I give up and try > again. > > > > Once I get that setup, I run: > > > > app.Control_Panel.DebugInfo.dbconnections() > > > > >From what I gather, not all connections are taken up. I have at least 2 > > that are free: > > > > [{'info': ' (1391)', 'version': '', 'opened': 'Sat Apr 24 15:38:59 2004 > > (31.63s)'}, {'info': ' (7290)', 'version': '', 'opened': 'Sat Apr 24 > > 15:30:36 2004 (534.16s)'}, {'info': "({'HTTP_ACCEPT': ... > > > > I try again a couplle of minutes later and I see: > > > > [{'info': ' (1391)', 'version': '', 'opened': 'Sat Apr 24 15:38:59 2004 > > (181.71s)'}, {'info': ' (7290)', 'version': '', 'opened': 'Sat Apr 24 > > 15:30:36 2004 (684.24s)'}, {'info': "({'HTTP_ACCEPT': ... > > > > The 4 other requests (I have 6 threads) are the same, they haven't > changed. > > So I think we can exclude running out of threads/db connections as a > source > > of the problem. The other 4 requests are for various content types. the > > content types themselves work fine, so I'm going ot take note of which > ones > > they are and see if one keeps recurring or something. Actually 2 of those > > do backend http calls, could there be some socket/timeout issue ? The call > > is to a CGI on the very same server though, so I'm confident it's running > > fine. > > > > At this point the monitor stops responding, in the middle of outputting > that > > second list. I hit enter and I get: > > > > error: uncaptured python exception, closing channel > <__main__.monitor_client > > connected at 0x400d5c0c> (socket.error:(9, 'Bad file descriptor') > > [/usr/local/lib/python2.3/asynchat.py|initiate_send|218] > > [/usr/local/lib/python2.3/asyncore.py|send|337]) > > > > I go look at my trace log, and stuff is still appearing in there ... > Though > > nothing gets returned. > > > > CPU usage right now is not particularely big ... > > > > [zope@tincup log]$ ps auxw | grep Zope > > zope 31498 0.0 0.2 6484 4576 ? S 15:26 0:00 > > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/zdaemon/ > > zope 31499 0.9 8.5 192848 176496 ? S 15:26 0:13 > > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > > zope 31500 0.0 8.5 192848 176496 ? S 15:26 0:00 > > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > > zope 31501 7.0 8.5 192848 176496 ? S 15:26 1:37 > > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > > zope 31502 5.8 8.5 192848 176496 ? S 15:26 1:21 > > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > > zope 31503 4.2 8.5 192848 176496 ? S 15:26 0:58 > > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > > zope 31504 0.5 8.5 192848 176496 ? S 15:26 0:07 > > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > > zope 31505 5.1 8.5 192848 176496 ? S 15:26 1:11 > > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > > zope 31506 1.6 8.5 192848 176496 ? S 15:26 0:22 > > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > > > > I'm going ot go do a requestprofiler now see what comes out ... > > > > Thanks again, > > J.F. > > > > > > -----Original Message----- > > From: Chris McDonough [mailto:chrism@plope.com] > > Sent: April 24, 2004 2:15 PM > > To: Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca > > Cc: zope(a)zope.org > > Subject: Re: [Zope] ZServer stops responding !? Help !? > > > > > > On Sat, 2004-04-24 at 13:53, Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca wrote: > > > G'day, > > > > > > I've got a rather bizarre but catastrophic problem. > > > > > > ZServer seems to stop responding. Sometimes it does so after days of > > > running, sometimes after a few seconds or minutes of uptime. > > > > > > I know it's ZServer because I can talk to the monitoring port without > > > problem. > > > > That may be a bit of flawed logic, because ZServer also runs the monitor > > port. > > > > > Also, the apache processes just pile up up to the limit allowed, > > > suggesting the proxying is not getting replies from the downstream > > > server. > > > > > > The strange thing is the cause seems to be occacional, or vary. For > > > hours on end I can sit there and restart it, and within minutes it stops > > > responding ... Then suddenly the problem "disappears", I restart it, and > > > I wait .... and nothing happens, it just keeps running. Nothing else > > > abnormal is going on the server so far as I can tell, there is very > > > little memory swapped, and the CPU usage is not abnormally high. > > > > It sounds as if Zope is doing something which blocks, consuming all > > database threads. > > > > > I used to have this problem very very rarely in the past, but since I > > > upgraded to Zope 2.7, it seems to have gotten much worse :( > > > > > > I tried accesing the DebugPanel from the monitor, but can't seem to get > > > it to do anything useful ... I don't know where else to look to find the > > > cause of this. > > > > > > This causes serious uptime problem on our main, high traffic site, which > > > is Very Bad. > > > > > > I'm on RedHat 7.3 (fully patched) > > > Python 2.3.3 (custom compiled) > > > Zope 2.7 > > > CMF 1.4.x (I forget ... the latest!) > > > Psycopg (Latest also) > > > And a variety of other products. > > > > I'd suggest using the "big M" or "trace" logging features along with the > > requestprofiler script to find out where the problem might be. > > > > - C > > > > _______________________________________________ > > Zope maillist - Zope(a)zope.org > > http://mail.zope.org/mailman/listinfo/zope > > ** No cross posts or HTML encoding! ** > > (Related lists - > > http://mail.zope.org/mailman/listinfo/zope-announce > > http://mail.zope.org/mailman/listinfo/zope-dev ) > > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) >

1 0

RE: [Zope] ZServer stops responding !? Help !?
by Jean-Francois.Doyon＠CCRS.NRCan.gc.ca 24 Apr '04

24 Apr '04

Dennis, I'm using a 4 CPU machine PIII's at 700Mhz each, with 2 GB of RAM. (Dell PE6400) I've got the check interval at 200 (Pystones/50, as I once saw somewhere). I runs very fast the rest of the time though :) As tyime goes by I'm compiling some data as to what the server is doing, and I'm focusing on one particular content type. This type does avariety things depending on the condition. The "simplest" is that it does nothing particular, just uses it's attributes and methods. In one case, it could run a local system command using os.popen() ... And in the really worst case, it starts an FTP connection. To a server local to our shop, but that I don't control. I'm wondeing if there's problems with the FTP connection or the system call maybe in some circumstances or for specific instances. Maybe osme "bad data" gets returned ? Personally I would tend to look more towards the network I/O as a potential source of "blocking" ... Anybody the intricacies of how the network I/O is handled in Python 2.3 and/or Zope 2.7 ? Any differences with previous versions ? The hunt continues ... Much thanks to all who are helping ! J.F. -----Original Message----- From: Dennis Allison [mailto:allison@sumeru.stanford.EDU] Sent: April 24, 2004 4:31 PM To: Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca Cc: chrism(a)plope.com; zope(a)zope.org Subject: RE: [Zope] ZServer stops responding !? Help !? Jean-Francois, What processor are you using? How many CPUs? -d On Sat, 24 Apr 2004 Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca wrote: > Chris, > > Thanks for tips. > > Here's what I've tried: > > When the sites looks like it's no longer responding, I connect with > the monitor. > > Running Zope.app() is very slow, sometimes so slow I give up and try again. > > Once I get that setup, I run: > > app.Control_Panel.DebugInfo.dbconnections() > > >From what I gather, not all connections are taken up. I have at least 2 > that are free: > > [{'info': ' (1391)', 'version': '', 'opened': 'Sat Apr 24 15:38:59 2004 > (31.63s)'}, {'info': ' (7290)', 'version': '', 'opened': 'Sat Apr 24 > 15:30:36 2004 (534.16s)'}, {'info': "({'HTTP_ACCEPT': ... > > I try again a couplle of minutes later and I see: > > [{'info': ' (1391)', 'version': '', 'opened': 'Sat Apr 24 15:38:59 2004 > (181.71s)'}, {'info': ' (7290)', 'version': '', 'opened': 'Sat Apr 24 > 15:30:36 2004 (684.24s)'}, {'info': "({'HTTP_ACCEPT': ... > > The 4 other requests (I have 6 threads) are the same, they haven't changed. > So I think we can exclude running out of threads/db connections as a source > of the problem. The other 4 requests are for various content types. the > content types themselves work fine, so I'm going ot take note of which ones > they are and see if one keeps recurring or something. Actually 2 of those > do backend http calls, could there be some socket/timeout issue ? The call > is to a CGI on the very same server though, so I'm confident it's running > fine. > > At this point the monitor stops responding, in the middle of outputting that > second list. I hit enter and I get: > > error: uncaptured python exception, closing channel <__main__.monitor_client > connected at 0x400d5c0c> (socket.error:(9, 'Bad file descriptor') > [/usr/local/lib/python2.3/asynchat.py|initiate_send|218] > [/usr/local/lib/python2.3/asyncore.py|send|337]) > > I go look at my trace log, and stuff is still appearing in there ... Though > nothing gets returned. > > CPU usage right now is not particularely big ... > > [zope@tincup log]$ ps auxw | grep Zope > zope 31498 0.0 0.2 6484 4576 ? S 15:26 0:00 > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/zdaemon/ > zope 31499 0.9 8.5 192848 176496 ? S 15:26 0:13 > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > zope 31500 0.0 8.5 192848 176496 ? S 15:26 0:00 > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > zope 31501 7.0 8.5 192848 176496 ? S 15:26 1:37 > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > zope 31502 5.8 8.5 192848 176496 ? S 15:26 1:21 > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > zope 31503 4.2 8.5 192848 176496 ? S 15:26 0:58 > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > zope 31504 0.5 8.5 192848 176496 ? S 15:26 0:07 > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > zope 31505 5.1 8.5 192848 176496 ? S 15:26 1:11 > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > zope 31506 1.6 8.5 192848 176496 ? S 15:26 0:22 > /usr/local/bin/python2.3 /usr/local/Zope-2.7-Core/lib/python/Zope/Sta > > I'm going ot go do a requestprofiler now see what comes out ... > > Thanks again, > J.F. > > > -----Original Message----- > From: Chris McDonough [mailto:chrism@plope.com] > Sent: April 24, 2004 2:15 PM > To: Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca > Cc: zope(a)zope.org > Subject: Re: [Zope] ZServer stops responding !? Help !? > > > On Sat, 2004-04-24 at 13:53, Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca wrote: > > G'day, > > > > I've got a rather bizarre but catastrophic problem. > > > > ZServer seems to stop responding. Sometimes it does so after days of > > running, sometimes after a few seconds or minutes of uptime. > > > > I know it's ZServer because I can talk to the monitoring port without > > problem. > > That may be a bit of flawed logic, because ZServer also runs the monitor > port. > > > Also, the apache processes just pile up up to the limit allowed, > > suggesting the proxying is not getting replies from the downstream > > server. > > > > The strange thing is the cause seems to be occacional, or vary. For > > hours on end I can sit there and restart it, and within minutes it stops > > responding ... Then suddenly the problem "disappears", I restart it, and > > I wait .... and nothing happens, it just keeps running. Nothing else > > abnormal is going on the server so far as I can tell, there is very > > little memory swapped, and the CPU usage is not abnormally high. > > It sounds as if Zope is doing something which blocks, consuming all > database threads. > > > I used to have this problem very very rarely in the past, but since I > > upgraded to Zope 2.7, it seems to have gotten much worse :( > > > > I tried accesing the DebugPanel from the monitor, but can't seem to get > > it to do anything useful ... I don't know where else to look to find the > > cause of this. > > > > This causes serious uptime problem on our main, high traffic site, which > > is Very Bad. > > > > I'm on RedHat 7.3 (fully patched) > > Python 2.3.3 (custom compiled) > > Zope 2.7 > > CMF 1.4.x (I forget ... the latest!) > > Psycopg (Latest also) > > And a variety of other products. > > I'd suggest using the "big M" or "trace" logging features along with the > requestprofiler script to find out where the problem might be. > > - C > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) >

2 1

RE: [Zope] Re: ZServer stops responding !? Help !?
by Jean-Francois.Doyon＠CCRS.NRCan.gc.ca 24 Apr '04

24 Apr '04

Max, You mean needing to register a signal handler ? I thought Zope 2.7 had all that included now ? Also I use zopectl and zdaemon so it detaches from the console... By output you mean through the HTTP channel, or STDOUT/STDERR ? BTW, much thanks for mxmRelations, it's great :) J.F. -----Original Message----- From: zope-bounces+jean-francois.doyon=ccrs.nrcan.gc.ca(a)zope.org [mailto:zope-bounces+jean-francois.doyon=ccrs.nrcan.gc.ca@zope.org]On Behalf Of Max M Sent: April 24, 2004 3:42 PM To: zope(a)zope.org Subject: [Zope] Re: ZServer stops responding !? Help !? Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca wrote: > G'day, > > ZServer seems to stop responding. Sometimes it does so after days of > running, sometimes after a few seconds or minutes of uptime. I don't know if Zope 2.7 still needs to be started with a nohup?? It sounds like the same problem, where Zope would stop after it was unable to write to the output. regards Max M _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )

1 0