The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [wait-types]

Whenever the server is running queries, it’s tracking how much time it spends waiting on bottlenecks. These wait statistics are the easiest way to identify your bottleneck.

13 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
5
votes
1answer
109 views

Different Disk Drive Same Backend Storage

I have a database running on a VM which is getting hammered during a large load, in particular I can see waits of WRITELOG happening. My initial thought is to split the files out on to their own ...
3
votes
0answers
352 views

PAGEIOLATCH_EX Wait on Target table of insert..select query

We are running SQL Server 2012 on Windows 2008 R2 with 256GB RAM and 90% memory allocated to SQL Server. No other Apps run on the server. I have a scenario where I’ve to copy a Source (staging) table ...
3
votes
0answers
216 views

PAGEIOLATCH_SH and WRITELOG waits

We have a slow overnight process which I was asked to look at with the top waits being PAGEIOLATCH_SH and WRITELOG I have been collecting information from sys.dm_io_virtual_file_stats and can see ...
3
votes
1answer
2k views

SQL Server performance issue (CXPACKET wait type)

I have a performance issue with production SQL Server 2012 which has 24 cores and 32 GB of RAM. From wait type I can see CXPACKET is on the top based on the following SQL Server metrics, should I ...
2
votes
0answers
2k views

Troubleshooting Preemptive_Xe_Dispatcher wait type

While looking for a reason behind slowness of the database server I accidentaly came across Preemptive_Xe_Dispatcher wait. Could you please suggest how this type of wait should be troubleshooted? ...
2
votes
0answers
894 views

How can I have long waits on Tracewrite, when I haven't run Profiler?

I recently setup a SQL Server which is used only ot run a sharepoint Server. I love to query my wait stats, just to see what we are waiting on. Most of the wait stats are fine, and I know where they ...
1
vote
0answers
101 views

MySQL wait events start and end time

How to get wait events exact start and exact end time in MySQL 5.7 version ? Any help will be helpful to us
1
vote
0answers
100 views

Negative values for Wait Time per Core per Sec in sp_BlitzFirst

I'm a developer in a firm that doesn't want to spend money on a DBA so i'm on my own with keeping the SQL servers healty. I checked some of Brent's videos and decided to check how hard the SQL servers ...
1
vote
0answers
55 views

How to identify a process that has been cancelled?

How can you identify a process that has been cancelled? for example: I was running this dynamic sql - via a linked server: declare @sql nvarchar(max) declare @i int declare @z int DECLARE @vCrlf ...
0
votes
0answers
8 views

How do I troubleshoot FILESTREAM_WORKITEM_QUEUE waits in SQL Server 2014?

Env: SQL Server 2014 SP2 on Windows Server 2012 R2. I am seeing our top wait as FILESTREAM_WORKITEM_QUEUE, with average waits near 1s and over 5000 waits during a 2-hour period of time. I haven't ...
0
votes
1answer
22 views

Wait Stats on Microsoft Azure test

On a particular test we're doing with Microsoft Azure, we are seeing a wait_category called: PAGE LATCH (non-I/O) that we're unfamiliar with. In our test, CaptureSeconds = 1595 and for PAGE LATCH (...
0
votes
0answers
1k views

LCK_M_S causing blocking with session id < 50

We are experiencing high LCK_M_S wait times conflicting with idle blocking sessions whose ids are less than 50. The waiting session is always a Select statement within a stored procedure. The ...
0
votes
1answer
131 views

Large Sleep counts causing THREADPOOL wait?

When I run sp_whoisactive throughout the day, I usually see we have around 500-700 connections on our server. We are occasionally getting threadpool waits and high signal wait ratios (so we are thread ...