Dear All,
Florin Andrei and myself have been using squid 2.4 as SGI's main web
proxy for the last two months, and have been seeing some bad behavior.
Thinking that this is most likely due to a memory leek, I ran squid under
purify and found some serious problems. I'm forwarding the log file
generated with the latest 2.4 squid in the hopes that you can review and
correct some of these problems. Purify considers a Memory Leak as
allocated memory without any pointers remaining to it, so it is
unretreavable. A potential memory leak is one that has a pointer to it
but not at the beginning of the allocated memory. This test was done
using a single client hitting only three different web pages through a
small test proxy that goes through our default proxy. Our main web proxy
has roughly three thousand users and an average load during business
hours of one hundred hits per second. Please help. Thanks in advance.
John Gilbert
jgilbert@sgi.com
Florin Andrei
florin@sgi.com
**** Purify instrumented squid.pure (pid 42675 at Wed May 9 10:01:11 2001)
* Purify 5.3 IRIX6, Copyright (C) 1992-2000 Rational Software Corp. All rights reserved.
* For contact information type: "purify -help"
* For TTY output, use the option "-windows=no"
* Command-line: squid.pure -NY
* Options settings: -purify -purify-home=/opt/releases/purify-5.3-irix6
* License successfully checked out.
**** Purify instrumented squid.pure (pid 42675) ****
SIG: Signal handled:
* This is occurring while in:
__poll [poll.s:20]
_poll [syscalls.c:7964]
comm_poll [comm_select.c:381]
main [main.c:720]
__start [crt1text.s:176]
* Received signal 15 (SIGTERM - Terminated)
* Handler function:
shut_down [main.c:266]
* Signal mask:
* Pending signals:
**** Purify instrumented squid.pure (pid 42675) ****
Current file descriptors in use: 4
FIU: file descriptor 26: <reserved for Purify internal use>
FIU: file descriptor 27: <reserved for Purify internal use>
FIU: file descriptor 45: <unnamed pipe[1]>, O_RDWR
* This file descriptor was allocated from:
_pipe [syscalls.c:7808]
ipcCreate [ipc.c:118]
storeDiskdDirInit [store_dir_diskd.c:418]
storeDirInit [store_dir.c:65]
storeInit [store.c:937]
mainInitialize [main.c:515]
FIU: file descriptor 48: <unnamed pipe[1]>, O_RDWR
* This file descriptor was allocated from:
_pipe [syscalls.c:7808]
ipcCreate [ipc.c:118]
storeDiskdDirInit [store_dir_diskd.c:418]
storeDirInit [store_dir.c:65]
storeInit [store.c:937]
mainInitialize [main.c:515]
**** Purify instrumented squid.pure (pid 42675) ****
Purify: Searching for all memory leaks...
Memory leaked: 320748 bytes (6.61%); potentially leaked: 50316 bytes (1.04%)
MLK: 212992 bytes leaked in 26 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
helperOpenServers [helper.c:102]
* Block of 8192 bytes (26 times); last block at 0x10345728
MLK: 24576 bytes leaked in 3 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
httpProcessReplyHeader [http.c:330]
* Block of 8192 bytes (3 times); last block at 0x10792f38
MLK: 23280 bytes leaked in 20 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
requestCreate [HttpRequest.c:41]
* Block of 1164 bytes (20 times); last block at 0x1072f058
MLK: 16384 bytes leaked in 4 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
httpAccept [client_side.c:2905]
* Block of 4096 bytes (4 times); last block at 0x107508e8
MLK: 12288 bytes leaked in 3 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
clientWriteComplete [client_side.c:1944]
* Block of 4096 bytes (3 times); last block at 0x10759b18
MLK: 8192 bytes leaked in 2 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
clientCreateStoreEntry [client_side.c:209]
* Block of 4096 bytes (2 times); last block at 0x10756738
MLK: 4096 bytes leaked at 0x107104d8
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
mimeLoadIconFile [mime.c:437]
MLK: 4096 bytes leaked at 0x1076bfa0
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
httpReplyParse [HttpReply.c:146]
MLK: 3920 bytes leaked in 5 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
parseHttpRequest [client_side.c:2376]
* Block of 784 bytes (5 times); last block at 0x107cc440
MLK: 3072 bytes leaked in 6 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocBuf [mem.c:154]
stringInitBuf [String.c:41]
* Block of 512 bytes (6 times); last block at 0x107582d0
MLK: 2560 bytes leaked in 32 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
helperOpenServers [helper.c:96]
* Block of 80 bytes (32 times); last block at 0x10345610
MLK: 1344 bytes leaked in 21 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
storeDiskdCreate [store_io_diskd.c:130]
* Block of 64 bytes (21 times); last block at 0x107310c0
MLK: 636 bytes leaked in 3 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
aclChecklistCreate [acl.c:1814]
* Block of 212 bytes (3 times); last block at 0x107426c0
MLK: 608 bytes leaked in 4 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
httpAccept [client_side.c:2897]
* Block of 152 bytes (4 times); last block at 0x107507f8
MLK: 384 bytes leaked in 32 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
comm_add_close_handler [comm.c:657]
helperOpenServers [helper.c:120]
* Block of 12 bytes (32 times); last block at 0x10347780
MLK: 360 bytes leaked in 5 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
statHistInit [StatHist.c:74]
statHistEnumInit [StatHist.c:285]
statCountersInitSpecial [stat.c:985]
* Block of 72 bytes (5 times); last block at 0x104e5870
MLK: 288 bytes leaked in 4 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
storeClientListAdd [store_client.c:136]
* Block of 72 bytes (4 times); last block at 0x10756698
MLK: 252 bytes leaked in 21 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
storeDiskdCreate [store_io_diskd.c:132]
storeCreate [store_io.c:48]
* Block of 12 bytes (21 times); last block at 0x1072ecc0
MLK: 220 bytes leaked in 5 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
httpStart [http.c:902]
* Block of 44 bytes (5 times); last block at 0x107b9718
MLK: 152 bytes leaked in 2 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
errorCon [errorpage.c:239]
* Block of 76 bytes (2 times); last block at 0x1078ddc0
MLK: 144 bytes leaked in 12 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
peerAddFwdServer [peer_select.c:648]
* Block of 12 bytes (12 times); last block at 0x10757868
MLK: 120 bytes leaked at 0x107425f0
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
peerSelect [peer_select.c:137]
MLK: 112 bytes leaked in 2 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
commConnectStart [comm.c:234]
fwdConnectStart [forward.c:310]
* Block of 56 bytes (2 times); last block at 0x10757928
MLK: 84 bytes leaked in 21 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
storeSwapOutStart [store_swapout.c:64]
* Block of 4 bytes (21 times); last block at 0x1071c330
MLK: 64 bytes leaked in 2 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
comm_write [comm.c:878]
clientSendMoreData [client_side.c:1769]
* Block of 32 bytes (2 times); last block at 0x10763ad8
MLK: 60 bytes leaked in 5 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
comm_add_close_handler [comm.c:657]
commConnectStart [comm.c:243]
* Block of 12 bytes (5 times); last block at 0x1083e9c0
MLK: 56 bytes leaked at 0x10303a88
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
helperCreate [helper.c:227]
MLK: 56 bytes leaked at 0x1083e8c8
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
commConnectStart [comm.c:234]
sslPeerSelectComplete [ssl.c:598]
MLK: 48 bytes leaked in 4 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
comm_add_close_handler [comm.c:657]
httpAccept [client_side.c:2907]
* Block of 12 bytes (4 times); last block at 0x10740220
MLK: 48 bytes leaked in 3 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
storeSwapTLVAdd [store_swapmeta.c:41]
* Block of 16 bytes (3 times); last block at 0x107116d8
MLK: 48 bytes leaked at 0x10733c08
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
storeDiskdDirSwapLog [store_dir_diskd.c:1284]
MLK: 48 bytes leaked in 4 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
comm_add_close_handler [comm.c:657]
fwdConnectStart [forward.c:305]
* Block of 12 bytes (4 times); last block at 0x107578c8
MLK: 32 bytes leaked at 0x10733c90
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
file_write [disk.c:307]
MLK: 32 bytes leaked at 0x10742cf8
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
comm_write [comm.c:878]
helperDispatch [helper.c:398]
MLK: 32 bytes leaked at 0x10748ad0
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
pconnNew [pconn.c:75]
pconnPush [pconn.c:205]
MLK: 32 bytes leaked at 0x10769750
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
comm_write [comm.c:878]
comm_write_mbuf [comm.c:893]
MLK: 20 bytes leaked at 0x107262a0
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
pconnNew [pconn.c:72]
pconnPush [pconn.c:205]
MLK: 12 bytes leaked at 0x10742c30
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
helperSubmit [helper.c:130]
PLK: 49152 bytes potentially leaked in 6 blocks
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
helperOpenServers [helper.c:102]
* Block of 8192 bytes (6 times); last block at 0x10341388
PLK: 1164 bytes potentially leaked at 0x1071dd60
* This memory was allocated from:
_malloc [malloc.c:966]
_calloc [malloc.c:2048]
xcalloc [util.c:562]
memPoolAlloc [MemPool.c:250]
memAllocate [mem.c:127]
requestCreate [HttpRequest.c:41]
Purify Heap Analysis (combining suppressed and unsuppressed blocks)
Blocks Bytes
Leaked 263 320748
Potentially Leaked 7 50316
In-Use 7466 4482102
----------------------------------------
Total Allocated 7736 4853166
**** Purify instrumented squid.pure (pid 42675) ****
* Program exited with status code 0.
* 1 access error, 1 total occurrence.
* 320748 bytes leaked.
* 50316 bytes potentially leaked.
* Basic memory usage (including Purify overhead):
2015232 code
1410276 data/bss
6732572 heap (peak use)
4464 stack
* Shared library memory usage (including Purify overhead):
413696 rtlib_n32.so (shared code)
67620 rtlib_n32.so (private data)
32768 libcrypt.so.00017064d5e0.pure (shared code)
4056 libcrypt.so.00017064d5e0.pure (private data)
491520 libm.so.000151df53cf.pure (shared code)
98320 libm.so.000151df53cf.pure (private data)
32768 libmalloc.so.0001d772a771.pure (shared code)
304 libmalloc.so.0001d772a771.pure (private data)
2523136 libc.so.1.0000c2be8cb5.pure (shared code)
76272 libc.so.1.0000c2be8cb5.pure (private data)
* Memory mapped usage:
524288 mmap'd at 0x4b51000
524288 mmap'd at 0x4a71000
1921024 mmap'd at 0x483c000
4190208 mmap'd at 0x4268000
8192 mmap'd at 0x4809000
Received on Wed May 09 2001 - 11:32:39 MDT
This archive was generated by hypermail pre-2.1.9 : Tue Dec 09 2003 - 16:14:00 MST