Pw and dz both reported an error this morning.

The pw and dz platforms reported an error this morning. after the new year, there were more things in the past few days.

Problem 1: The DZ platform error occasionally opens the page 404 and enters the system background, a php process 100% is found

The following error is reported:

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Unlink ("data/threadcache/d/6/5/") =-1 ENOENT (No such file or directory)

Stat ("data/threadcache/d/6/5/", 0x7fff092e9750) =-1 ENOENT (No such file or directory)

Solution: It is estimated that the cache is updated. restart the php service.

Problem 2: The PW system crashes.

Error: Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 8329487 bytes)

How to use so much memory...

Solution: change memory_limit = 128 M in php. ini to memory_limit = 256 M to solve the problem. if any program causes this problem, please wait for a while!