Submitting an Issue

Enrico Giordani edited this page Jul 31, 2015 · 4 revisions

Before submitting an issue

Run a memory test


We have a long history of users experiencing crashes with Redis that actually turned out to be servers with broken RAM. Please test your RAM using redis-server --test-memory in case Redis is not stable in your system. Redis built-in memory test is fast and reasonably reliable, but if you can you should reboot your server and use memtest86.

Starting with the 2.8.21 release the built-in memory test is also available on Redis on Windows:

redis-server.exe --test-memory <megabytes>

If the issue you are reporting is a crash, please take the time to run the Redis memory test first or even better the Windows Memory Diagnostic tool.

Check the system paging file size

Another common source of crashes on Windows is an inadequate size of the system paging file. If the system paging file size limit is reached during a fork operation, Redis will crash even if there is plenty of physical RAM available. To make sure the system paging file size is large enough please follow the Memory Configuration guidelines.

How to submit a BUG REPORT

Starting with the 2.8.21 release, Redis on Windows produces a BUG REPORT when Redis crashes:

=== REDIS BUG REPORT START: Cut & paste starting from here ===
[6840] 23 Jun 23:58:33.208 # --- EXCEPTION_ACCESS_VIOLATION
[6840] 23 Jun 23:58:33.209 # --- STACK TRACE
redis-server.exe!debugCommand(c:\redis\src\debug.c:261)(0xF73F22F0, 0xBF55D2AF, 0xF73800F0, 0x4007038C)
redis-server.exe!call(c:\redis\src\redis.c:2016)(0x5589D689, 0x40087DD0, 0x00000001, 0x00000006)
redis-server.exe!processCommand(c:\redis\src\redis.c:2235)(0xF73F22F0, 0x00000006, 0x0000001D, 0x00000001)
redis-server.exe!processInputBuffer(c:\redis\src\networking.c:1278)(0xF73F22F0, 0x00000000, 0x0000001D, 0x00000000)
redis-server.exe!readQueryFromClient(c:\redis\src\networking.c:1333)(0xF73000D0, 0x00000001, 0xF73D6F00, 0x00000001)
redis-server.exe!aeMain(c:\redis\src\ae.c:487)(0x5589D67F, 0xF7386968, 0x00000002, 0x002CD190)
redis-server.exe!redis_main(c:\redis\src\redis.c:3544)(0x00000000, 0x00000000, 0x5589D67F, 0x00000000)
redis-server.exe!main(c:\redis\src\win32_interop\win32_qfork.cpp:1383)(0x00000000, 0x00000000, 0x00000000, 0x00000000)
[6840] 23 Jun 23:58:33.241 # --- INFO OUTPUT
# Server
[6840] 23 Jun 23:58:33.250 #
=== REDIS BUG REPORT END. Make sure to include from START to END. ===

When reporting a bug that caused Redis to crash, please make sure to include the full BUG REPORT from START to END. In some cases the BUG REPORT includes only the STACK TRACE section but not the INFO OUTPUT.

Report the crash by opening an issue at

Enable the crash mini dump on Windows Server 2008 and later

If you are experiencing redis-server crashes and the log isn't reporting the Stack Trace information, please enable the Windows crash mini dump report as explained in the following wiki page: Mini Dump Configuration Instructions

How to submit a generic issue

When submitting an issue that doesn't have a BUG REPORT, please include the following information:

  • Redis version number.
  • Redis server configuration: # of slaves, # of sentinels.
  • Redis configuration files for master, slaves, sentinels.
  • Windows version.

If possible describe the steps to reproduce the issue (a script or code that can automate the steps would be ideal).

Report the issue at

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