Memory leakage

[eclipse]

Hi, I was wondering if it is normal for BA to exhibit an increase in memory usage over time, I have a number of examples of BA running on a server and when I first open them, memory usage is about 180 Mb each but after 24 hours they are all over 300Mb with one close to 400Mb. Obviously my memory has a finite limit, is it better to close and open BA each day? Would prefer not to have to do this. Any thoughts appreciated.

[GaryRussell]

Not a memory leak as such, but if the same market is being monitored up to 5 hours then it will increase usage as it stores price history for the charts. You can change the setting in general preferences to store 0 hours price history if you don't need them. The default setting is 5 hours. If you do this then I would not expect it to increase and I will investigate as a memory leak.

[eclipse]

Thanks Gary, I always set chart history to 0 by default as I don't use them, I do have the last market of the day being logged with a 120 second refresh rate until the following morning when it will reload the days racing, perhaps this is the problem.

[GaryRussell]

That shouldn't cause an issue. I will investigate.

[Castillo]

Can you confirm if this problem was appearing just after starting the application or had it been running continuously since the previous day?

Hi Gary

I may have found what was causing the problem. I’m back to using the latest Beta Version 1.1.0.66x80. What I’ve noticed is with Task Manager open (So I can evaluate the memory used) and then refreshing markets in BA the memory fluctuation for example can range from 110,000K to 300,000K. However following a market refresh BA sometimes does not return to 110,000K but remain at the higher memory used rate. So following further market refreshes it can push the memory BA uses up to the 800,000K / 900,000K mark which eventually caused the PC to run very short on Virtual Memory which is probably why I was getting the following error message and it was continuing to fail to load markets.

07:40:43:703: Error loading markets: System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at Betting_Assistant.MyTreeView.listMarketsThread() in C:\Betting Assistant Beta 1_1_0_66x68\Betfair Trading API Beta\MyTreeView.vb:line 218

So I’ve increased the Page file to hopefully overcome the problem.

Just to give you an example of tonight’s setup for BA and the memory readings from Task Manager.

Setup 7 Tabs linked to US racing and Excel. (Memory Usage approx 150,000K)
Setup an additional 12 Tabs linked to AUS racing and Excel, still showing 150,000K approx but after a market refresh the memory used is now showing 370,000K but after a few minutes it has reduced to 190,000K

Hopefully loading markets will not be an issue from now on.

Cheers
Castillo

Thanks. What you say backs up what I have found. It looks like there is a memory leak. I am pretty sure I know where the leak is now so I am going to plug it.

Hi Gary,

Did you manage to fix this memory leak?
As I've upgraded to a new PC, Intel i3, Windows 7, 8GB RAM and I'm still getting the above memory increases when refreshing the Market Tree.

Sorry but I may have not made myself clear in my earlier messages, it's when refreshing the Market Tree the memory used increases dramatically.

The version of BA I'm using is 1.1.0.66x82

Cheers
Castillo

[GaryRussell]

Can you confirm if this problem was appearing just after starting the application or had it been running continuously since the previous day?

Hi Gary

I may have found what was causing the problem. I’m back to using the latest Beta Version 1.1.0.66x80. What I’ve noticed is with Task Manager open (So I can evaluate the memory used) and then refreshing markets in BA the memory fluctuation for example can range from 110,000K to 300,000K. However following a market refresh BA sometimes does not return to 110,000K but remain at the higher memory used rate. So following further market refreshes it can push the memory BA uses up to the 800,000K / 900,000K mark which eventually caused the PC to run very short on Virtual Memory which is probably why I was getting the following error message and it was continuing to fail to load markets.

07:40:43:703: Error loading markets: System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
at Betting_Assistant.MyTreeView.listMarketsThread() in C:\Betting Assistant Beta 1_1_0_66x68\Betfair Trading API Beta\MyTreeView.vb:line 218

So I’ve increased the Page file to hopefully overcome the problem.

Just to give you an example of tonight’s setup for BA and the memory readings from Task Manager.

Setup 7 Tabs linked to US racing and Excel. (Memory Usage approx 150,000K)
Setup an additional 12 Tabs linked to AUS racing and Excel, still showing 150,000K approx but after a market refresh the memory used is now showing 370,000K but after a few minutes it has reduced to 190,000K

Hopefully loading markets will not be an issue from now on.

Cheers
Castillo

Thanks. What you say backs up what I have found. It looks like there is a memory leak. I am pretty sure I know where the leak is now so I am going to plug it.

Hi Gary,

Did you manage to fix this memory leak?
As I've upgraded to a new PC, Intel i3, Windows 7, 8GB RAM and I'm still getting the above memory increases when refreshing the Market Tree.

Sorry but I may have not made myself clear in my earlier messages, it's when refreshing the Market Tree the memory used increases dramatically.

The version of BA I'm using is 1.1.0.66x82

Cheers
Castillo

Sorry, this hasn't been resolved. I will take another look at it.

[flogger]

That's understandable though. Looking at this issue, it seems to be pretty complex. Would love to get some updates too.

[eclipse]

Yes definitely when refreshing the market tree, had just opened BA and did a refresh and memory usage jumped from 139Mb to 276Mb.

[eclipse]

Did you have any joy with this Gary?

[GaryRussell]

Sorry still looking into it. It's a tricky one to solve, but I will solve it.

[NorthView]

I'm having the same problem now that I automatically reload the new day's racing every morning.

On the first day BA would take the usual couple of hundred MB, but now, after running for 3 days, it's taking 1.2GB.

I have it set to record 0 hours of chart history.

I'm going on holiday soon and need this to be running automatically while I'm away, so I'd appreciate a resolution before then.

version 1.1.0.66x85

Thanks.

[NorthView]

After loading today's races, it's now using 1.9GB of RAM.

[Captain Sensible]

Yes I've noticed in the past that BA does seem to increase it's memory usage if refreshed and new markets are added, I'm guessing it's storing previous market data rather than dumping it and reloading a completely new set.

[Captain Sensible]

1.9GB is high though are you firing loads of bets etc ie transaction log building unreasonably high and are you sure it's BA that's taking the memory that high and not excel? I suppose alot will depend on what your sheet's doing, if it's logging bets/results etc as those checks are bound to add up to any overheads on old data

[NorthView]

Thanks for your thoughts, CS.

I've created a new thread in the Bugs section, because I can't think of any reason why BA would increase its memory usage so much each day.

The strange is, I'm not actually placing bets, just monitoring markets and recording prices.