I have Apache2 with APC.
When I change something, I have to restart Apache to see the effect. I know 100% for sure it's because of APC.
What is wrong in my settings? (thanks for the help!)
extension=apc.so
apc.enabled = On
apc.optimization = 0
apc.shm_segments = 1
apc.shm_size = 2.6G
apc.ttl = 7200
apc.user_ttl = 720
apc.num_files_hint = 102400
apc.mmap_file_mask = /tmp/apc.XXXXXX
apc.enable_cli = 1
apc.cache_by_default = 1
apc.max_file_size = 220M
apc.stat = 0
You have apc.stat set to 0. This means APC will not check whether the file is modified when it's requested, it will always serve it from cache after the first compilation.
To fix you problem either remove apc.stat = 0 or change it back to default apc.stat = 1
Related
Here's my local script placed into the starter gui. I need the sound to loop after 62 seconds.
game.Workspace.Sound.Play()
local sound = Instance.new("Sound", game.Workspace)
sound.SoundId = "rbxassetid://145294677"
sound.TimePosition = 0
sound:Play()
wait(62)
sound:Stop()
sound:Play()
Sound:Play() will reset the position to 0 or the last set value
local sound = Instance.new("Sound", game.Workspace)
sound.SoundId = "rbxassetid://145294677"
while true do
sound:Play()
wait(62)
end
I have a running Payara 4 instance which I set the MaxHeapSize and MetaspaceSize as described here to be production ready. How can I check those values were correctly set?
You could check this using jmap -heap <pid> on the PID of the Payara process. jmap is contained in the JDK bin directory.
On JDK9+ you need to use jhsdb jmap --heap --pid <PID> to get the needed information.
The output should contain the needed information, e.g:
Heap Configuration:
MinHeapFreeRatio = 0
MaxHeapFreeRatio = 100
MaxHeapSize = 268435456 (256.0MB)
NewSize = 89128960 (85.0MB)
MaxNewSize = 89128960 (85.0MB)
OldSize = 179306496 (171.0MB)
NewRatio = 2
SurvivorRatio = 8
MetaspaceSize = 21807104 (20.796875MB)
CompressedClassSpaceSize = 1073741824 (1024.0MB)
MaxMetaspaceSize = 17592186044415 MB
G1HeapRegionSize = 0 (0.0MB)
I'm working on a spring boot project about electronic contract recently.And There has an interface of raiseContract().Considering that the traffic of this interface will be large in the future,My Leader let me use Hystrix to defender it.And I did not use it before.I am learning it and trying to use it on the interface.I use ThreadPool Isolation Strategy and I don't konw how to set
the parameter of coreSize reasonable in ThreadPoolProperties.In other words,I want to know what should I follow to set it.
I did a lot of research,but I did not get the answer.All of Answer is about the meaning of coreSize,maxQueueSize etc.
Here is my code:
#HystrixCommand(
groupKey = "contractGroup",
commandKey = "raiseContract",
fallbackMethod = "raiseContractFallback",
threadPoolProperties = {
#HystrixProperty(name = "coreSize", value = "20"),
#HystrixProperty(name = "maxQueueSize", value = "150"),
#HystrixProperty(name = "queueSizeRejectionThreshold", value = "100")},
commandProperties = {
#HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "15000"),
#HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "5"),
#HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "50"),
#HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "3000"),
#HystrixProperty(name = "fallback.isolation.semaphore.maxConcurrentRequests", value = "20")
})
As you are already aware of, there are 3 main threadPool configurations:
coreSize: Number of threads that will be maintained in the pool
maxSize: Defines how much extra threads are allowed in case need arises.
maxQueueSize: Queue size of the tasks
Now lets start with an example. Assume there is a service using hystrix, call it HystrixService, for which coreSize = maxSize = n and maxQueueSize = -1 (default case). This means at a time at most 'n' tasks will be executed. Any extra task that is coming will be rejected (fallback will be executed).
So, in ideal scenario, you have to ensure that this HystrixService doesn't reject any request coming to it. You need to know at max how many requests can there be on HystrixService. So if throughput on HystrixService is 10 Requests per second, then max concurrent requests on HystrixService can be 10. Now suppose latency of HystrixService is 2 sec, then by the time it responds to first 10 requests, 10 more requests will come. i.e. total requests = 2 * 10 = 20. So coreSize in this case should be 20.
This is same as mentioned in hystrix documentation,
coreSize = Peak Request per sec × P99 latency + some breathing room
Now, you can keep maxSize and queueSize a bit high, so that it doesn't reject requests, in case there are sudden throughput spikes on your service.
Issue :
Someone has added a junk column in one of my table.I want to figure it out from the logs as when and from where this activity has been performed.
Please Help regarding this issue.
Make sure enable logging in postgresql.conf
1.log_destination = 'stderr' #log_destination = 'stderr,csvlog,syslog'
2.logging_collector = on #need restart
3.log_directory = 'pg_log'
4.log_file_name = 'postgresql-%Y-%m-%d_%H%M%S.log'
5.log_rotation_age = 1d
6.log_rotation_size = 10MB
7.log_min_error_statement = error
8.log_min_duration_statement = 5000 # -1 = disable ; 0 = ALL ; 5000 = 5sec
9.log_line_prefix = '|%m|%r|%d|%u|%e|'
10.log_statment = 'ddl' # 'none' | 'ddl' | 'mod' | 'all'
#prefer 'ddl' because the log output will be 'ddl' and 'query min duration'
If you don't enable it, make sure enable it now.
if you don't have log the last attempt is pg_xlogdump your xlog file under pg_xlog and look for DDL
I am working on doing a health pack for Roblox for my game. the code is complete and it works perfectly, but I want the health pack itself to rotate slowly in a cool way so here is my code tell me what is wrong
local healthPack = script.Parent
local healAmount = 30
local cooldown = 5
local canHeal = true
local function handleTouch(otherPart)
local character = otherPart.Parent
local humanoid = character:FindFirstChild('Humanoid')
if humanoid and canHeal then
if game.Workspace.Player1.Humanoid.Health == 100 then
print("You have enough health")
else
canHeal = false
game.Workspace.HealthPack.Transparency = .75
local currentHealth = humanoid.Health
local newHealth = currentHealth + healAmount
humanoid.Health = newHealth
wait(cooldown)
canHeal = true
game.Workspace.HealthPack.Transparency = 0
end
end
end
healthPack.Touched:connect(handleTouch)
while true do
local currentRotationX = game.Workspace.HealthPack.Rotation.X
--local currentRotationX = game.Workspace.HealthPack.Rotation.Y
local currentRotationZ = game.Workspace.HealthPack.Rotation.Z
game.Workspace.HealthPack.Rotation.X = currentRotationX + 10
--game.Workspace.HealthPack.Rotation.Y = currentRotationY + 10
game.Workspace.HealthPack.Rotation.Z = currentRotationZ + 10
wait(.5)
end
Try the following code. In order to rotate an object correctly (modifying the rotation property usually doesn't do the trick, it's similar to the position property, it conforms to collisions) you must use CFrame.
local x = 0
while true do
game.Workspace.HealthPack.CFrame = game.Workspace.HealthPack.CFrame * CFrame.Angles(0, math.rad(x), 0)
x = x + 1
wait()
end
Fair disclaimer, I haven't worked with RBX.Lua in a while, so this might not be the best way to do it.
local runService = game:GetService("RunService")
runService.Heartbeat:Connect(function()
script.Parent.Orientation += Vector3.new(0,0.2,0)
end)
you could change the y axis (or any other axis) of the part's orientation forever to rotate slowly with runService.Heartbeat (while True do loop but quicker for a smoother rotation).