Threadpool runs much slower on a much faster server

upd Now I think that the root of my problem is not "streaming", because I observe a slowdown anywhere in my program. I think that somehow, when using 2 processors, my program runs slower, possibly because the two processors need to "exchange" with each other. I need to do some tests. I will try to turn off one of the processors and see what happens.

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I'm not sure if this is a C # question, maybe this is more hardware related, but I think C # would be the most suitable.

I used a cheap DL120 server, and I decided to upgrade to a much more expensive 2-processor DL360p server. Suddenly, my C # program runs about ~ 2 times slower on a new server, which should be several times faster.

I processed the FAST data of about 60 tools. I created a separate task for each such tool:

        BlockingCollection<OrderUpdate> updatesQuery;
        if (instrument2OrderUpdates.ContainsKey(instrument))
        {
            updatesQuery = instrument2OrderUpdates[instrument];
        } else
        {
            updatesQuery = new BlockingCollection<OrderUpdate>();
            instrument2OrderUpdates[instrument] = updatesQuery;
            ScheduleFastOrdersProcessing(updatesQuery);
        }
        orderUpdate.Checkpoint("updatesQuery.Add");
        updatesQuery.Add(orderUpdate);
    }

    private void ScheduleFastOrdersProcessing(BlockingCollection<OrderUpdate> updatesQuery)
    {
        Task.Factory.StartNew(() =>
        {
            Instrument instrument = null;
            OrderBook orderBook = null;
            int lastRptSeqNum = -1;
            while (!updatesQuery.IsCompleted)
            {
                OrderUpdate orderUpdate;
                try
                {
                    orderUpdate = updatesQuery.Take();
                } catch(InvalidOperationException e)
                {
                    Log.Push(LogItemType.Error, e.Message);
                    continue;
                }
                orderUpdate.Checkpoint("received from updatesQuery.Take()");
                ......................
                ...................... // long not interesting processing code
        }, TaskCreationOptions.LongRunning);

Since I have about 60 tasks that can be performed in parallel, I expect that 2 * E5-2640 (24 virtual threads, 12 real threads) should run much faster than 1 * E3-1220 (4 real threads). It seems like using DL360p I found 95 threads in task manager. Using the DL120 has only 55 threads.

DL120G7 2 (!!) ! E3-1220 , E5-2640 (3,1 2,5 ), , 2 * E5-2640, , 2 !

HP DL120G7 E3-1220

~ 50 = 24 ~ 80

 calling market.UpdateFastOrder = 23 updatesQuery.Add = 25 received from updatesQuery.Take() = 67 in orderbook = 80
 calling market.UpdateFastOrder = 30 updatesQuery.Add = 32 received from updatesQuery.Take() = 64 in orderbook = 73
 calling market.UpdateFastOrder = 31 updatesQuery.Add = 32 received from updatesQuery.Take() = 195 in orderbook = 204
 calling market.UpdateFastOrder = 31 updatesQuery.Add = 32 received from updatesQuery.Take() = 74 in orderbook = 86
 calling market.UpdateFastOrder = 18 updatesQuery.Add = 21 received from updatesQuery.Take() = 65 in orderbook = 78
 calling market.UpdateFastOrder = 29 updatesQuery.Add = 32 received from updatesQuery.Take() = 76 in orderbook = 88
 calling market.UpdateFastOrder = 30 updatesQuery.Add = 32 received from updatesQuery.Take() = 80 in orderbook = 92
 calling market.UpdateFastOrder = 20 updatesQuery.Add = 21 received from updatesQuery.Take() = 65 in orderbook = 78
 calling market.UpdateFastOrder = 21 updatesQuery.Add = 24 received from updatesQuery.Take() = 68 in orderbook = 81
 calling market.UpdateFastOrder = 12 updatesQuery.Add = 13 received from updatesQuery.Take() = 58 in orderbook = 72
 calling market.UpdateFastOrder = 22 updatesQuery.Add = 23 received from updatesQuery.Take() = 51 in orderbook = 59
 calling market.UpdateFastOrder = 16 updatesQuery.Add = 16 received from updatesQuery.Take() = 20 in orderbook = 24
 calling market.UpdateFastOrder = 28 updatesQuery.Add = 31 received from updatesQuery.Take() = 82 in orderbook = 94
 calling market.UpdateFastOrder = 18 updatesQuery.Add = 21 received from updatesQuery.Take() = 65 in orderbook = 77
 calling market.UpdateFastOrder = 29 updatesQuery.Add = 29 received from updatesQuery.Take() = 259 in orderbook = 264
 calling market.UpdateFastOrder = 49 updatesQuery.Add = 52 received from updatesQuery.Take() = 99 in orderbook = 113
 calling market.UpdateFastOrder = 22 updatesQuery.Add = 23 received from updatesQuery.Take() = 50 in orderbook = 60
 calling market.UpdateFastOrder = 29 updatesQuery.Add = 32 received from updatesQuery.Take() = 76 in orderbook = 88
 calling market.UpdateFastOrder = 16 updatesQuery.Add = 19 received from updatesQuery.Take() = 63 in orderbook = 75
 calling market.UpdateFastOrder = 27 updatesQuery.Add = 27 received from updatesQuery.Take() = 226 in orderbook = 231
 calling market.UpdateFastOrder = 15 updatesQuery.Add = 16 received from updatesQuery.Take() = 35 in orderbook = 42
 calling market.UpdateFastOrder = 18 updatesQuery.Add = 21 received from updatesQuery.Take() = 66 in orderbook = 78

HP DL360p G8 2 * E5-2640

~ 95 ; best = 40 ~ 150

 calling market.UpdateFastOrder = 62 updatesQuery.Add = 64 received from updatesQuery.Take() = 144 in orderbook = 205
 calling market.UpdateFastOrder = 27 updatesQuery.Add = 32 received from updatesQuery.Take() = 101 in orderbook = 154
 calling market.UpdateFastOrder = 45 updatesQuery.Add = 50 received from updatesQuery.Take() = 124 in orderbook = 187
 calling market.UpdateFastOrder = 46 updatesQuery.Add = 51 received from updatesQuery.Take() = 127 in orderbook = 162
 calling market.UpdateFastOrder = 63 updatesQuery.Add = 68 received from updatesQuery.Take() = 137 in orderbook = 174
 calling market.UpdateFastOrder = 53 updatesQuery.Add = 55 received from updatesQuery.Take() = 133 in orderbook = 171
 calling market.UpdateFastOrder = 44 updatesQuery.Add = 46 received from updatesQuery.Take() = 131 in orderbook = 158
 calling market.UpdateFastOrder = 37 updatesQuery.Add = 39 received from updatesQuery.Take() = 102 in orderbook = 140
 calling market.UpdateFastOrder = 45 updatesQuery.Add = 50 received from updatesQuery.Take() = 115 in orderbook = 154
 calling market.UpdateFastOrder = 50 updatesQuery.Add = 55 received from updatesQuery.Take() = 133 in orderbook = 160
 calling market.UpdateFastOrder = 26 updatesQuery.Add = 50 received from updatesQuery.Take() = 99 in orderbook = 111
 calling market.UpdateFastOrder = 14 updatesQuery.Add = 30 received from updatesQuery.Take() = 36 in orderbook = 40   <-- best one I can find among thousands

, 2 ? , ~ 60 ? , .NET 95 , 50 24? , 2 1 ? , DL360P Gen8 ?

  • market.UpdateFastOrder - orderUpdate
  • updatesQuery.Add - orderUpdate BlockingCollection
  • updatesQuery.Take() - orderUpdate, BlockingCollection
  • orderbook - orderUpdated orderBook
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